s_id stringlengths 10 10 | p_id stringlengths 6 6 | u_id stringlengths 10 10 | date stringlengths 10 10 | language stringclasses 1
value | original_language stringclasses 11
values | filename_ext stringclasses 1
value | status stringclasses 1
value | cpu_time int64 0 100 | memory stringlengths 4 6 | code_size int64 15 14.7k | code stringlengths 15 14.7k | problem_id stringlengths 6 6 | problem_description stringlengths 358 9.83k | input stringlengths 2 4.87k | output stringclasses 807
values | __index_level_0__ int64 1.1k 1.22M |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
s205454444 | p04030 | u554590385 | 1596768902 | Python | Python (3.8.2) | py | Accepted | 33 | 9080 | 180 | s=str(input())
C= list(s)
list=[]
for I in range(len(C)):
if C[I]!='B':
list.append(C[I])
elif C[I]=='B' and len(list)!=0:
list.pop()
print("".join(list)) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,381 |
s967883507 | p04030 | u500823377 | 1596765334 | Python | Python (3.8.2) | py | Accepted | 27 | 9004 | 187 | input_line = list(input())
t = []
for i in input_line:
if i == "0":
t.append("0")
elif i == "1":
t.append("1")
else:
if t == []:
t == []
else:
t.pop(-1)
print("".join(t)) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,382 |
s264249896 | p04030 | u552738814 | 1596763013 | Python | Python (3.8.2) | py | Accepted | 27 | 9044 | 255 | input = input()
output = ""
for i in range(len(input)):
if input[i] == "0":
output += "0"
elif input[i] == "1":
output += "1"
elif input[i] == "B":
output = output[0:len(output)-1]
else:
pass
print(output) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,383 |
s660433718 | p04030 | u175217658 | 1596747911 | Python | Python (3.8.2) | py | Accepted | 29 | 8944 | 186 | S = list(input())
ans = []
for i in range(len(S)):
if(S[i] != 'B'):
ans.append(S[i])
elif(S[i] == 'B' and len(ans) != 0):
ans.pop()
print(''.join(ans)) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,384 |
s574934874 | p04030 | u343977188 | 1596724683 | Python | Python (3.8.2) | py | Accepted | 26 | 9044 | 140 | s=str(input())
edi=[]
for i in s:
if i=='B' and len(edi)>0:
edi.pop(-1)
elif i=='0' or i=='1':
edi.append(i)
print("".join(edi)) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,385 |
s983549207 | p04030 | u627691992 | 1596723498 | Python | Python (3.8.2) | py | Accepted | 27 | 9012 | 199 | S = input()
res = ""
for i in range(len(S)):
if(S[i] == "B" and res != ''):
res = res[:-1]
elif(S[i] == "0"):
res += "0"
elif(S[i] == "1"):
res += "1"
print(res)
| p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,386 |
s566362463 | p04030 | u806976856 | 1596693936 | Python | Python (3.8.2) | py | Accepted | 29 | 9108 | 198 | s=list(input())
n=len(s)
ans=[]
for i in range(n):
if s[i]!="B" :
ans.append(s[i])
else:
if len(ans)!=0:
ans.pop(-1)
print("".join(ans))
| p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,387 |
s902113249 | p04030 | u844813573 | 1596683697 | Python | Python (3.8.2) | py | Accepted | 29 | 9112 | 185 | line = input()
ans = ""
for i in range(len(line)):
if line[i] == "0" or line[i] == "1":
ans += line[i]
else:
if ans != "":
ans = ans[0:-1]
print(ans) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,388 |
s570297156 | p04030 | u844813573 | 1596683584 | Python | Python (3.8.2) | py | Accepted | 26 | 9040 | 207 | line = input()
ans = ""
for i in range(len(line)):
if line[i] == "0":
ans += "0"
elif line[i] == "1":
ans += "1"
else:
if ans != "":
ans = ans[0:-1]
print(ans) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,389 |
s515129927 | p04030 | u330799501 | 1596642420 | Python | Python (3.8.2) | py | Accepted | 31 | 8928 | 405 | #k = int(input())
#s = input()
#a, b = map(int, input().split())
#s, t = map(str, input().split())
#l = list(map(int, input().split()))
#l = [list(map(int,input().split())) for i in range(n)]
s = input()
ans = []
for i in range(len(s)):
if s[i] != "B":
ans.append(s[i])
else:
if (len(ans) > 0... | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,390 |
s387497267 | p04030 | u935139749 | 1596511664 | Python | Python (3.8.2) | py | Accepted | 28 | 9032 | 154 | s = input()
ans = ''
for si in s:
if si == '0':
ans += '0'
elif si == '1':
ans += '1'
else:
ans = ans[:-1]
print(ans) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,391 |
s561860448 | p04030 | u626228246 | 1596486432 | Python | Python (3.8.2) | py | Accepted | 27 | 9044 | 213 | s = list(input())
box = []
for i in range(len(s)):
if s[i] == "0":
box.append("0")
elif s[i] == "1":
box.append("1")
else:
if box == []:
pass
else:
box.pop(-1)
print("".join(box)) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,392 |
s627849719 | p04030 | u385823012 | 1596469638 | Python | Python (3.8.2) | py | Accepted | 26 | 8864 | 173 | s = input()
out = ""
for i in range(len(s)):
if s[i] == "B":
out = out[0:len(out)-1]
elif s[i] !="B":
out = out+s[i]
else:
out = ""
print(out)
| p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,393 |
s010801291 | p04030 | u980503157 | 1596469474 | Python | Python (3.8.2) | py | Accepted | 29 | 8872 | 169 | s = input()
out = ""
for i in range(len(s)):
if s[i] == "B":
out = out[0:len(out)-1]
elif s[i] != "B":
out = out+s[i]
else:
out = ""
print(out) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,394 |
s284960426 | p04030 | u094191970 | 1596411935 | Python | Python (3.8.2) | py | Accepted | 28 | 9092 | 138 | s=input()
ans=''
for i in s:
if i=='0':
ans+='0'
elif i=='1':
ans+='1'
else:
if ans!='':
ans=ans[:-1]
print(ans) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,395 |
s256493951 | p04030 | u433380437 | 1596392153 | Python | PyPy3 (7.3.0) | py | Accepted | 73 | 61556 | 126 | S=str(input())
T=''
for i in range(len(S)):
if S[i]=='0' or S[i]=='1':
T+=S[i]
else:
T=T[:-1]
print(T) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,396 |
s836059599 | p04030 | u372303722 | 1596388473 | Python | Python (3.8.2) | py | Accepted | 24 | 8996 | 238 |
s = input()
c = list(s)
ans_list = []
for i in range(len(s)):
if(c[i]=="0" or c[i]=="1"):
ans_list.append(c[i])
else:
try:
ans_list.pop(-1)
except:
a = 0
print("".join(ans_list))
| p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,397 |
s007318227 | p04030 | u123107676 | 1596388411 | Python | Python (3.8.2) | py | Accepted | 35 | 9864 | 146 | import re
text = input()
b_length = len(re.sub('[^B]', '', text))
for _ in range(b_length):
text = re.sub('(0|1)??B', '', text, 1)
print(text) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,398 |
s659161048 | p04030 | u671454079 | 1596388248 | Python | Python (3.8.2) | py | Accepted | 27 | 8976 | 414 | s = input()
n = len(s)
s_ans = ""
for i in range(n):
if s[i] == "0":
s_ans = s_ans + "0"
elif s[i] == "1":
s_ans = s_ans + "1"
elif s[i] == "B":
len_ans = len(s_ans)
if len_ans >= 1:
s_ans = s_ans[:len_ans-1]
elif len_ans == 0:
s_ans = s_a... | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,399 |
s291382463 | p04030 | u200245833 | 1596364450 | Python | Python (3.8.2) | py | Accepted | 29 | 9040 | 128 | s = list(input())
out = []
for s1 in s:
if s1 == 'B':
if out != []:
out.pop()
else:
out.append(s1)
print(''.join(out)) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,400 |
s935358753 | p04030 | u156815136 | 1596331920 | Python | Python (3.8.2) | py | Accepted | 39 | 10204 | 935 | #from statistics import median
#import collections
#aa = collections.Counter(a) # list to list || .most_common(2)で最大の2個とりだせるお a[0][0]
from fractions import gcd
from itertools import combinations,permutations,accumulate # (string,3) 3回
#from collections import deque
from collections import deque,defaultdict,Counter
impo... | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,401 |
s076771700 | p04030 | u054514819 | 1596331038 | Python | PyPy3 (7.3.0) | py | Accepted | 63 | 61948 | 338 | import sys
def input(): return sys.stdin.readline().strip()
def mapint(): return map(int, input().split())
sys.setrecursionlimit(10**9)
S = list(input())
lis = []
for s in S:
if s=='0':
lis.append(str(0))
if s=='1':
lis.append(str(1))
if s=='B':
if len(lis):
lis.pop()
p... | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,402 |
s853178423 | p04030 | u644907318 | 1596330935 | Python | PyPy3 (7.3.0) | py | Accepted | 69 | 61608 | 245 | s = input().strip()
x = ""
cur = 0
for i in range(len(s)):
if s[i]=="0":
x += "0"
cur += 1
elif s[i]=="1":
x += "1"
cur += 1
else:
if cur>0:
x = x[:-1]
cur -= 1
print(x) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,403 |
s104608586 | p04030 | u046158516 | 1596330654 | Python | PyPy3 (7.3.0) | py | Accepted | 66 | 61688 | 170 | s=input()
ans=[]
for i in range(len(s)):
if s[i]=='0':
ans.append('0')
elif s[i]=='1':
ans.append('1')
else:
if ans:
ans.pop()
print(''.join(ans)) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,404 |
s884288292 | p04030 | u229156891 | 1596330654 | Python | Python (3.8.2) | py | Accepted | 25 | 9032 | 186 | s = input()
ans = []
for l in s:
if l == '0':
ans.append('0')
elif l == '1':
ans.append('1')
else:
if ans:
ans.pop()
print(''.join(ans)) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,405 |
s731884893 | p04030 | u761320129 | 1596330373 | Python | Python (3.8.2) | py | Accepted | 24 | 8956 | 126 | S = input()
ans = []
for c in S:
if c=='B':
if ans: ans.pop()
else:
ans.append(c)
print(''.join(ans)) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,406 |
s705389350 | p04030 | u678167152 | 1596330337 | Python | Python (3.8.2) | py | Accepted | 28 | 8916 | 184 | def solve():
S = input()
ans = []
for s in S:
if s!='B':
ans.append(s)
else:
if len(ans):
ans.pop(-1)
ans = ''.join(ans)
return ans
print(solve()) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,407 |
s194278973 | p04030 | u047197186 | 1596168509 | Python | Python (3.8.2) | py | Accepted | 29 | 8900 | 107 | s = input()
res = ''
for elem in s:
if elem == 'B':
res = res[:-1]
else:
res += elem
print(res) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,408 |
s617374223 | p04030 | u105099610 | 1596160805 | Python | Python (3.8.2) | py | Accepted | 23 | 9020 | 219 | s = list(input())
n = len(s)
ans = []
for i in range(n):
if s[i] == '0':
ans.append('0')
elif s[i] == '1':
ans.append('1')
elif ans == []:
continue
else:
ans.pop()
print(''.join(ans))
| p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,409 |
s256490820 | p04030 | u131464432 | 1596154095 | Python | Python (3.8.2) | py | Accepted | 25 | 9016 | 131 | s = input()
a = []
for i in s:
if i != "B":
a.append(i)
else:
if a:
a.pop()
print(*a, sep = "") | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,410 |
s264273033 | p04030 | u394244719 | 1596115177 | Python | PyPy3 (7.3.0) | py | Accepted | 66 | 61504 | 245 | s = input()
st = []
for i in range(len(s)):
if s[i] == "0":
st.append("0")
elif s[i] == "1":
st.append("1")
else:
if len(st) != 0:
st.pop()
else:
continue
print("".join(st))
| p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,411 |
s471069112 | p04030 | u075303794 | 1596084034 | Python | Python (3.8.2) | py | Accepted | 23 | 8916 | 170 | S=[x for x in input()]
ans=[]
for i in range(len(S)):
if S[i]!='B':
ans.append(S[i])
else:
try:
ans.pop()
except:
continue
print(''.join(ans)) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,412 |
s936443814 | p04030 | u841568901 | 1596057157 | Python | Python (3.8.2) | py | Accepted | 27 | 9196 | 171 | from collections import deque
S = input()
T = deque([])
for s in S:
if s=="B" and len(T)>0:
T.pop()
elif s=="B":
pass
else:
T.append(s)
print("".join(T)) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,413 |
s587351177 | p04030 | u396211450 | 1596014148 | Python | Python (3.8.2) | py | Accepted | 25 | 8928 | 181 | s=input()
l=[]
for i in s:
if i=="0":
l.append("0")
elif i=="1":
l.append("1")
elif i=="B":
if l!=[]:
l.pop()
if l==[]:
print("")
else:
print("".join(l))
| p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,414 |
s961286536 | p04030 | u259190728 | 1596014090 | Python | Python (3.8.2) | py | Accepted | 30 | 9260 | 1,619 | from sys import stdin,stdout
import bisect
import math
def st():
return list(stdin.readline().strip())
def inp():
return int(stdin.readline())
def li():
return list(map(int,stdin.readline().split()))
def mp():
return map(int,stdin.readline().split())
def pr(n):
stdout.write(str(n)+"\n")
def... | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,415 |
s249328965 | p04030 | u425762225 | 1596013218 | Python | Python (3.8.2) | py | Accepted | 22 | 9048 | 258 | #!/usr/bin/env python3
def solve(s):
l = []
for c in s:
if c == "0" or c == "1":
l.append(str(c))
elif len(l):
l.pop()
return "".join(l)
def main():
s = input()
print(solve(s))
return
if __name__ == '__main__':
main()
| p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,416 |
s639692702 | p04030 | u840841119 | 1595938455 | Python | Python (3.8.2) | py | Accepted | 30 | 9096 | 94 | s = input()
ans = ''
for i in s:
ans = ans[:-1] if i == 'B' else ans + i
print(ans) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,417 |
s077220293 | p04030 | u075304271 | 1595911065 | Python | Python (3.8.2) | py | Accepted | 36 | 10292 | 406 | import math
import collections
import fractions
import itertools
import functools
import operator
def solve():
s = input()
edge = collections.deque()
for i in s:
if i == "0":
edge.append("0")
elif i == "1":
edge.append("1")
elif len(edge) > 0:
edg... | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,418 |
s382438098 | p04030 | u666964944 | 1595895281 | Python | Python (3.8.2) | py | Accepted | 29 | 8948 | 113 | s = input()
ans = ''
for si in s:
if si=='0': ans+='0'
elif si=='1': ans+='1'
else: ans=ans[:-1]
print(ans) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,419 |
s939007239 | p04030 | u763410402 | 1595878185 | Python | Python (3.8.2) | py | Accepted | 25 | 9056 | 231 | def main():
s=input()
li=[]
for i in range(len(s)):
if(s[i]!='B'):
li.append(s[i])
else:
if(len(li)!=0):
li.pop()
for i in li:
print(i,end='')
main()
| p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,420 |
s370344618 | p04030 | u980503157 | 1595871415 | Python | Python (3.8.2) | py | Accepted | 28 | 9096 | 175 | s = input()
output_s = ""
for i in s:
if i == "B" and len( output_s) != 0:
output_s = output_s[0:len( output_s)-1]
elif i != "B":
output_s += i
print(output_s) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,421 |
s215809449 | p04030 | u788068140 | 1595850719 | Python | Python (3.8.2) | py | Accepted | 32 | 9348 | 429 | from collections import deque
S = input()
def calculate(s):
q = deque()
for i in range(len(s)):
if s[i] == "0":
q.append("0")
continue
if s[i] == "1":
q.append("1")
continue
if s[i] == "B":
if len(q) > 0:
q.p... | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,422 |
s465389771 | p04030 | u875113233 | 1595796134 | Python | Python (3.8.2) | py | Accepted | 29 | 8976 | 281 | def main():
s=input()
a=[]
for i in range(len(s)):
if s[i]=='0':
a.append('0')
elif s[i]=='1':
a.append('1')
elif s[i]=='B':
if a==[]:
continue
else:
a.pop(-1)
print(''.join(a))
if __name__=='__main__':
main() | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,423 |
s475230414 | p04030 | u797165415 | 1595775133 | Python | Python (3.8.2) | py | Accepted | 25 | 9000 | 229 | s = input()
l = len(s)
ans = []
for i in range(l):
if s[i]=='0':
ans.append('0')
elif s[i]=='1':
ans.append('1')
else:
if ans!=[]:
ans.pop(-1)
n = len(ans)
for i in range(n-1):
print(ans[i], end="")
print(ans[n-1])
| p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,424 |
s356584011 | p04030 | u539768961 | 1595724939 | Python | Python (3.8.2) | py | Accepted | 33 | 9088 | 111 | s = input()
a = ""
for i in s:
if i == "B":
if not(a == ""):
a = a[:-1]
else:
a += i
print(a) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,425 |
s551656884 | p04030 | u576335153 | 1595714195 | Python | Python (3.8.2) | py | Accepted | 24 | 9092 | 159 | s = input()
ans = ''
for x in s:
if x == 'B':
if ans == '':
continue
ans = ans[:-1]
else:
ans += x
print(ans)
| p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,426 |
s063396749 | p04030 | u758815106 | 1595665470 | Python | Python (3.8.2) | py | Accepted | 22 | 9036 | 164 | s = input()
res = ""
for do in s:
if do == "B":
if len(res) != 0:
res = res[0:len(res)-1]
else:
res += do
print(res) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,427 |
s290532287 | p04030 | u923662841 | 1595637704 | Python | Python (3.8.2) | py | Accepted | 31 | 8772 | 185 | s=input()
stack =[]
for i in s:
if i != "B":
stack.append(i)
else:
if not stack:
continue
else:
stack.pop()
print("".join(stack)) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,428 |
s277215956 | p04030 | u088553842 | 1595636272 | Python | Python (3.8.2) | py | Accepted | 30 | 9264 | 210 | from collections import deque
s = input()
lst = deque()
for i in range(len(s)):
if s[i] == 'B':
if len(lst) > 0:
lst.pop()
else:
pass
else:
lst.append(s[i])
print(''.join(list(lst))) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,429 |
s094950760 | p04030 | u094999522 | 1595608937 | Python | Python (3.8.2) | py | Accepted | 36 | 9820 | 121 | #!/usr/bin/env python3
import re
s = input()
for i in range(5):
s = re.sub(r"\dB", "", s)
print(s.replace("B", ""))
| p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,430 |
s502083280 | p04030 | u640922335 | 1595604114 | Python | Python (3.8.2) | py | Accepted | 31 | 9400 | 245 | from collections import deque
S=input()
ans=[]
ans=deque(ans)
for letter in S:
if letter=='0':
ans.append('0')
elif letter=='1':
ans.append('1')
else:
if len(ans)!=0:
ans.pop()
print(''.join(ans)) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,431 |
s272156425 | p04030 | u119148115 | 1595567440 | Python | PyPy3 (7.3.0) | py | Accepted | 71 | 61708 | 231 | import sys
def LS2(): return list(sys.stdin.readline().rstrip()) #空白なし
s = LS2()
ans = []
for a in s:
if a != 'B':
ans.append(a)
else:
if len(ans) != 0:
del ans[-1]
print(''.join(ans)) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,432 |
s888719743 | p04030 | u169138653 | 1595555814 | Python | Python (3.8.2) | py | Accepted | 32 | 9328 | 267 | from collections import deque
s=input()
n=len(s)
stack=deque([])
for i in range(n):
if s[i]=="0":
stack.append("0")
elif s[i]=="1":
stack.append("1")
else:
if stack:
x=stack.pop()
stack=list(stack)
print("".join(stack)) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,433 |
s555622047 | p04030 | u040298438 | 1595540236 | Python | Python (3.8.2) | py | Accepted | 28 | 8892 | 150 | s = input()
while "0B" in s or "1B" in s:
s = s.replace("0B", "")
s = s.replace("1B", "")
while "B" in s:
s = s.replace("B", "")
print(s) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,434 |
s593992498 | p04030 | u797106134 | 1595514287 | Python | Python (3.8.2) | py | Accepted | 26 | 8980 | 164 | S = input()
Ans = []
for s in S:
if not s=='B':
Ans.append(s)
continue
if not Ans:
continue
Ans = Ans[:-1]
print(''.join(Ans))
| p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,435 |
s444161300 | p04030 | u465101448 | 1595511418 | Python | Python (3.8.2) | py | Accepted | 29 | 9100 | 133 | S = input()
ans=''
for s in S:
if s == 'B' :
if len(ans)>0:
ans=ans[:-1]
else:
ans+=s
print(ans) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,436 |
s263295768 | p04030 | u112065131 | 1595456348 | Python | Python (3.8.2) | py | Accepted | 27 | 8996 | 328 | # -*- coding: utf-8 -*-
# B - バイナリハックイージー
s = input()
listAns = []
set1 = ['0', '1']
set2 = ['B']
listS = list(s)
# print(listS)
for i in listS:
if i in set1:
listAns.append(i)
elif i in set2:
if len(listAns) != 0:
listAns.pop()
ans = "".join(listAns)
print(ans) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,437 |
s561384051 | p04030 | u801049006 | 1595456331 | Python | Python (3.8.2) | py | Accepted | 25 | 9012 | 225 | s = list(input())
n = len(s)
ans = []
for i in range(n):
if s[i] == '0':
ans.append('0')
if s[i] == '1':
ans.append('1')
if s[i] == 'B':
if ans:
ans.pop()
print("".join(ans))
| p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,438 |
s196621628 | p04030 | u113255362 | 1595437405 | Python | Python (3.8.2) | py | Accepted | 25 | 9056 | 254 | S=input()
List = list(S)
res=""
def responseB(moji):
if moji == "":
return moji
else:
moji = moji[0:len(moji)-1]
return moji
for i in range(len(S)):
if not List[i] == "B":
res += List[i]
else:
res = responseB(res)
print(res) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,439 |
s186566679 | p04030 | u414458988 | 1595384372 | Python | PyPy3 (7.3.0) | py | Accepted | 75 | 65036 | 262 | def main():
s = input()
from collections import deque
c = deque()
for i in s:
if i == 'B':
if c:
c.pop()
else:
c.append(i)
print(''.join(list(c)))
if __name__ == '__main__':
main()
| p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,440 |
s544362076 | p04030 | u767797498 | 1595383527 | Python | Python (3.8.2) | py | Accepted | 24 | 8968 | 83 | s=input()
ss=""
for c in s:
if c=="B":
ss=ss[:-1]
else:
ss+=c
print(ss) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,441 |
s545673317 | p04030 | u414920281 | 1595379603 | Python | Python (3.8.2) | py | Accepted | 23 | 8984 | 167 | s=input()
n=len(s)
ans=""
for i in range(n):
if s[i]=="0":
ans+="0"
elif s[i]=="1":
ans+="1"
else:
ans=ans[:len(ans)-1]
print(ans)
| p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,442 |
s585533473 | p04030 | u968404618 | 1595211293 | Python | Python (3.8.2) | py | Accepted | 27 | 9024 | 157 | S = input()
ans = ""
for s in S:
if s == "0":
ans += "0"
if s == "1":
ans += "1"
if s == "B":
ans = ans[:-1]
print(ans) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,443 |
s062728265 | p04030 | u319245933 | 1595208954 | Python | PyPy3 (7.3.0) | py | Accepted | 70 | 61856 | 151 | *S, = input()
ans = []
for s in S:
if s == 'B':
if len(ans):
ans.pop(-1)
else:
ans.append(s)
print(*ans, sep='') | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,444 |
s110904356 | p04030 | u506910932 | 1595207765 | Python | Python (3.8.2) | py | Accepted | 24 | 9024 | 222 | s = input()
ans = []
for c in s:
if c == '0':
ans.append('0')
elif c == '1':
ans.append('1')
else:
if ans:
ans.pop()
else:
continue
print(''.join(ans))
| p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,445 |
s440338271 | p04030 | u779805689 | 1595188939 | Python | PyPy3 (7.3.0) | py | Accepted | 65 | 61788 | 110 | S=input()
T=""
for s in S:
if s=="B":
if T:
T=T[:-1]
else:
T+=s
print(T)
| p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,446 |
s729291352 | p04030 | u763280125 | 1595181262 | Python | Python (3.8.2) | py | Accepted | 29 | 9020 | 227 | s = input()
i = len(s) - 1
res = ''
while i >= 0:
while i >= 0 and s[i] != 'B':
res += s[i]
i -= 1
cnt = 0
while i >= 0 and s[i] == 'B':
i -= 1
cnt += 1
i -= cnt
print(res[::-1])
| p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,447 |
s576914749 | p04030 | u904406968 | 1595127761 | Python | PyPy3 (7.3.0) | py | Accepted | 62 | 61784 | 139 | s = input()
ans = []
for i in s:
if i=='B':
if len(ans)==0:
continue
ans.pop()
else:
ans.append(i)
new = ''.join(ans)
print(new) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,448 |
s901319167 | p04030 | u285681431 | 1595107272 | Python | Python (3.8.2) | py | Accepted | 28 | 8908 | 171 | s = input()
op = ""
for i in range(len(s)):
if s[i] == "0":
op += "0"
if s[i] == "1":
op += "1"
if s[i] == "B":
op = op[:-1]
print(op)
| p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,449 |
s910067779 | p04030 | u962985517 | 1595101260 | Python | Python (3.8.2) | py | Accepted | 27 | 9036 | 192 | s =input()
ans = []
for i in range(len(s)):
if (s[i] == '0') or (s[i] == '1'):
ans.append(s[i])
elif ans ==[]:
continue
else:
ans.pop()
print(''.join(ans)) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,450 |
s992131144 | p04030 | u962985517 | 1595100748 | Python | Python (3.8.2) | py | Accepted | 31 | 9112 | 204 | li = list(input())
ans = []
for i in range(len(li)):
if (li[i] == '0') or (li[i] == '1'):
ans.append(li[i])
elif len(ans) > 0:
ans.pop()
else:
pass
print(''.join(ans)) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,451 |
s238692260 | p04030 | u456337115 | 1595042850 | Python | PyPy3 (7.3.0) | py | Accepted | 68 | 61892 | 193 | inp = input()
str =""
for n in range(len(inp)):
if inp[n]=="0":
str = str + "0"
elif inp[n] =="1":
str = str + "1"
else:
if len(str) > 0:
str = str[:-1]
print(str)
| p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,452 |
s214118988 | p04030 | u039002256 | 1595041466 | Python | Python (3.8.2) | py | Accepted | 26 | 9068 | 214 | S = input()
l = []
for i in S:
if i == "0":
l.append("0")
if i == "1":
l.append("1")
if i == "B" and len(l) > 0:
del l[len(l) - 1]
for i in l:
print(f"{i}", end="")
print()
| p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,453 |
s716000920 | p04030 | u501451051 | 1595039562 | Python | Python (3.8.2) | py | Accepted | 27 | 8940 | 196 | s = input()
ans = []
for i in s:
if i == '1' or i == '0':
ans.append(i)
else:
if ans == []:
continue
else:
ans.pop()
print(''.join(ans))
| p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,454 |
s686042021 | p04030 | u623231048 | 1595036233 | Python | Python (3.8.2) | py | Accepted | 28 | 8908 | 188 | s = input()
n = len(s)
ans = ''
for i in range(n):
s1 = s[i]
if s1 == '0':
ans += '0'
elif s1 == '1':
ans += '1'
else:
ans = ans[:-1]
print(ans)
| p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,455 |
s692935822 | p04030 | u185806788 | 1594972241 | Python | PyPy3 (7.3.0) | py | Accepted | 64 | 62624 | 2,188 | s=input()
A=s.replace("0B","").replace("1B","").replace("0B","").replace("1B","").replace("0B","").replace("1B","").replace("0B","").replace("1B","").replace("0B","").replace("1B","").replace("0B","").replace("1B","").replace("0B","").replace("1B","").replace("0B","").replace("1B","").replace("0B","").replace("1B","")
... | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,456 |
s467637357 | p04030 | u135389999 | 1594964464 | Python | Python (3.8.2) | py | Accepted | 29 | 8952 | 158 | s = input()
n = len(s)
ans = []
for i in s:
if i != "B":
ans.append(i)
else:
if ans != []:
ans.pop()
print("".join(ans)) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,457 |
s813091689 | p04030 | u833492079 | 1594959950 | Python | Python (3.8.2) | py | Accepted | 28 | 9044 | 103 | s = input()
ans = ""
for c in s:
if c=='B':
ans = ans[:-1]
else:
ans = ans + c
print(ans) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,458 |
s201103236 | p04030 | u230621983 | 1594934409 | Python | Python (3.8.2) | py | Accepted | 30 | 8996 | 150 | s = input()
ans = ''
for c in s:
if c == '0':
ans += '0'
elif c == '1':
ans += '1'
else:
ans = ans[:-1]
print(ans) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,459 |
s740827465 | p04030 | u271064067 | 1594928585 | Python | Python (3.8.2) | py | Accepted | 28 | 9092 | 307 | s = str(input())
result = ""
res = []
for i in range(len(s)):
if s[i] == "0":
res.append("0")
elif s[i] == "1":
res.append("1")
else:
if len(res) > 1:
del res[-1]
elif len(res) == 1:
res = []
for i in res:
result += i
print(result)
| p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,460 |
s940277011 | p04030 | u968166680 | 1594891837 | Python | Python (3.8.2) | py | Accepted | 27 | 8928 | 399 | import sys
read = sys.stdin.read
readline = sys.stdin.readline
readlines = sys.stdin.readlines
sys.setrecursionlimit(10 ** 9)
INF = 1 << 60
MOD = 1000000007
def main():
s = readline().strip()
ans = []
for c in s:
if c in ('0', '1'):
ans.append(c)
elif ans:
ans.pop... | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,461 |
s323722113 | p04030 | u452337391 | 1594876379 | Python | Python (3.8.2) | py | Accepted | 23 | 9008 | 160 | S = input()
ans = []
for s in S:
if s == "0" or s == "1":
ans.append(s)
if s == "B":
if ans:
ans.pop(-1)
print("".join(ans)) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,462 |
s680429737 | p04030 | u543373102 | 1594873308 | Python | Python (3.8.2) | py | Accepted | 25 | 8908 | 158 | S = input()
ans = ""
for s in S:
if s == "0":
ans += s
elif s == "1":
ans += s
elif s == "B":
ans = ans[:-1]
print(ans) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,463 |
s636357937 | p04030 | u930705402 | 1594861475 | Python | Python (3.8.2) | py | Accepted | 24 | 9060 | 96 | s=input()
t=''
for c in s:
if c!='B':
t+=c
elif t!='':
t=t[:-1]
print(t) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,464 |
s529905748 | p04030 | u706414019 | 1594814928 | Python | Python (3.8.2) | py | Accepted | 30 | 9288 | 183 | from collections import deque
S=input()
t = deque()
for s in S:
if s == 'B' and len(t) !=0:
t.pop()
elif s == '1' or s == '0':
t.append(s)
print(''.join(t))
| p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,465 |
s855863242 | p04030 | u991604406 | 1594810396 | Python | Python (3.8.2) | py | Accepted | 25 | 8932 | 220 | s = input()
ans = []
for i in range(len(s)):
if s[i] == '0':
ans.append(0)
elif s[i] == '1':
ans.append(1)
else:
if ans != []:
ans.pop()
print(''.join(str(n) for n in ans)) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,466 |
s836346877 | p04030 | u551857719 | 1594752365 | Python | Python (3.8.2) | py | Accepted | 29 | 9096 | 390 | #!/usr/bin/python
# -*- coding: UTF-8 -*-
import sys
def std_in():
return sys.stdin.readline().strip()
def editor(s):
d = ""
for c in s:
if c == "0":
d += c
elif c == "1":
d += c
elif c == "B":
d = d[0:-1]
return d
def _main():
s = s... | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,467 |
s822143591 | p04030 | u626891113 | 1594748193 | Python | Python (3.8.2) | py | Accepted | 27 | 8996 | 184 | s = list(input())
ans = []
for i in s:
if i == "B":
if ans == []:
pass
else:
del ans[-1]
else:
ans.append(i)
print("".join(ans)) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,468 |
s078759763 | p04030 | u841568901 | 1594745516 | Python | Python (3.8.2) | py | Accepted | 29 | 8900 | 129 | S = input()
T = ""
for s in S:
if s == "0":
T += "0"
elif s == "1":
T += "1"
elif len(T)>0:
T = T[:-1]
print(T) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,469 |
s249195327 | p04030 | u767797498 | 1594710943 | Python | Python (3.8.2) | py | Accepted | 24 | 9004 | 163 | def bs(s):
if s == "":
return s
else:
return s[:-1]
s = input()
ans = ""
for c in s:
if c == "B":
ans = bs(ans)
else:
ans += c
print(ans) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,470 |
s624513376 | p04030 | u088863512 | 1594709101 | Python | Python (3.8.2) | py | Accepted | 30 | 9268 | 574 | # -*- coding: utf-8 -*-
import sys
from collections import deque, defaultdict
from math import sqrt, factorial
# def input(): return sys.stdin.readline()[:-1] # warning not \n
# def input(): return sys.stdin.buffer.readline().strip() # warning bytes
# def input(): return sys.stdin.buffer.readline().decode('utf-8')
de... | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,471 |
s093551340 | p04030 | u970198631 | 1594693986 | Python | Python (3.8.2) | py | Accepted | 25 | 8964 | 220 | NN = input()
list1 =[]
for i in NN:
if i == '0':
list1.append('0')
elif i == '1' :
list1.append('1')
else:
if len(list1) == 0:
pass
else:
list1.pop(-1)
for i in list1:
print(i,end ='') | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,472 |
s446527655 | p04030 | u441175813 | 1594642894 | Python | PyPy3 (7.3.0) | py | Accepted | 75 | 61708 | 147 | s = input()
ans = ""
for i in s:
if i == "B":
if not ans == "":
ans = ans[:-1]
else:
ans = ans + i
print(ans) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,473 |
s612728908 | p04030 | u598684283 | 1594580270 | Python | Python (3.8.2) | py | Accepted | 28 | 8940 | 266 | s = list(input())
output = []
for i in range(len(s)):
if s[i] == "0":
output.append("0")
elif s[i] == "1":
output.append("1")
else:
if len(output) > 0:
output.pop()
else:
pass
print("".join(output)) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,474 |
s714878395 | p04030 | u736546944 | 1594576764 | Python | PyPy3 (7.3.0) | py | Accepted | 74 | 61716 | 138 | s = list(input())
ans = ""
for i in s:
if i == "0":
ans += "0"
elif i == "1":
ans += "1"
else:
ans = ans[:-1]
print(ans) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,475 |
s403972835 | p04030 | u545644875 | 1594512876 | Python | Python (3.8.2) | py | Accepted | 29 | 9108 | 222 | S = list(input())
ans_list = []
for i in S:
if i == "0":
ans_list.append("0")
elif i == "1":
ans_list.append("1")
else:
if len(ans_list) != 0:
del ans_list[-1]
ans = "".join(ans_list)
print(ans) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,476 |
s117582433 | p04030 | u456416458 | 1594506870 | Python | Python (3.8.2) | py | Accepted | 30 | 8928 | 283 | s = input()
i = list(s)
answer = []
for num in i:
if num == '0':
answer.append(num)
elif num == '1':
answer.append(num)
else:
if answer == []:
continue
else:
answer.pop()
for num in answer:
print(num,end='') | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,477 |
s287392677 | p04030 | u316603606 | 1594500750 | Python | Python (3.8.2) | py | Accepted | 30 | 9044 | 145 | S = input ()
s = ''
for i in S:
if i == '0':
s += i
elif i == '1':
s += i
elif i == 'B':
if s != '':
s = s[:-1]
print (s) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,478 |
s989809916 | p04030 | u370721525 | 1594499143 | Python | Python (3.8.2) | py | Accepted | 28 | 8976 | 154 | s = str(input())
ans = ''
for i in s:
if i == '0':
ans += i
elif i == '1':
ans += i
else:
if ans != '':
ans = ans[:-1]
print(ans) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,479 |
s756362624 | p04030 | u719886494 | 1594482847 | Python | Python (3.8.2) | py | Accepted | 27 | 9060 | 147 | s = input()
num = len(s)
ans = ""
for i in range(num):
if s[i] != 'B':
ans += s[i]
elif len(ans) != 0:
ans = ans[:-1]
print(ans) | p04030 | <span class="lang-en">
<p>Score : <var>200</var> points</p>
<div class="part">
<section>
<h3>Problem Statement</h3><p>Sig has built his own keyboard. Designed for ultimate simplicity, this keyboard only has <var>3</var> keys on it: the <code>0</code> key, the <code>1</code> key and the backspace key.</p>
<p>To begin wi... | 01B0
| 00
| 1,204,480 |
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