problem_id
stringclasses
428 values
submission_id
stringlengths
10
10
status
stringclasses
2 values
code
stringlengths
5
816
p03673
s917961698
Accepted
from collections import deque n = int(input()) a = list(map(int,input().split())) d = deque() for i in range(n): if n%2 == 0 and i%2 == 0: d.append(a[i]) elif n%2==1 and i%2==1: d.append(a[i]) else: d.appendleft(a[i]) print(' '.join(map(str,list(d))))
p02681
s186673193
Accepted
s = str(input()) t = str(input()) if 1 <= len(s) and len(s) <= 10 and len(t) == len(s) + 1 and t.startswith(s): print("Yes") else: print("No")
p02713
s239156475
Wrong Answer
from math import gcd n=int(input()) ans=0 for i in range(n+1): for j in range(n+1): gcd_ij=gcd(i,j) for k in range(n+1): ans+=gcd(gcd_ij,k) print(ans)
p02640
s162989945
Accepted
anims, legs = map(int, input().split(' ')) for crane in range(anims + 1): if crane * 2 + (anims - crane) * 4 == legs: print("Yes") exit() print("No")
p02744
s146769745
Accepted
N = int(input()) strlist = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j'] ans = [['a']] for i in range(1, N): ans.append([]) for s in ans[i-1]: n = len(set(s)) for j in range(n+1): ans[i].append(s+strlist[j]) ans.sort() print(*ans[-1], sep='\n')
p02971
s737852658
Accepted
N = int(input()) A = [int(input()) for _ in range(N)] m1, m2 = 0, 0 for a in A: if a >= m1: m2 = m1 m1 = a elif a > m2: m2 = a for a in A: if a == m1: print(m2) else: print(m1)
p02948
s579622455
Accepted
import heapq n,m= map(int,input().split()) feeindays = [[] for _ in range(m)] for i in range(n): a,b= map(int,input().split()) if a<=m:feeindays[a-1]+=[b] q=[] heapq.heapify(q) pay=0 for l in feeindays: for c in l:heapq.heappush(q,-c) if len(q)!=0:pay+=-1 * heapq.heappop(q) print(pay)
p03379
s270649373
Wrong Answer
N = [input().split() for l in range(2)] length = int(N[0][0]) array = [] for i in range(length): tmp = [] for j in range(length): if i != j: tmp.extend(N[1][j]) array.append(sorted(tmp)) #print(array) for line in array: print(line[int(len(line)/2)])
p02712
s790874346
Wrong Answer
n = int(input()) ans = 0 for i in range(n+1): if (i % 3 != 0) and (i % 5 != 0): ans += 0 print(ans)
p03943
s553574671
Accepted
C = list(map(int, input().split())) C.sort() if C[2] == C[1] + C[0]: print('Yes') else: print('No')
p03693
s926053877
Accepted
r, g, b = map(int, input().split()) sum = r * 100 + g * 10 + b if sum % 4 == 0: print("YES") else: print("NO")
p02802
s027720753
Accepted
n,m=input().split() n=int(n) m=int(m) f=[0]*n wa=[0]*n ac=0 for i in range(m): p,s=input().split() p=int(p)-1 if f[p]==1: continue if s=="WA": wa[p]+=1 else: ac+=1 f[p]=1 x=0 for i in range(n): if f[i]==1: x+=wa[i] print(ac,x)
p03435
s059898207
Accepted
c11, c12, c13 = map(int, input().split()) c21, c22, c23 = map(int, input().split()) c31, c32, c33 = map(int, input().split()) if not(c12-c11 == c22-c21 == c32-c31): print("No") quit() if not(c13-c12 == c23-c22 == c33-c32): print("No") quit() if not(c21-c11 == c22-c12 == c23-c13): print("No") quit() if not(c31-c21 == c32-c22 == c33-c23): print("No") quit() print("Yes")
p02994
s476750217
Accepted
N,L = map(int,input().split()) NL = [int(i)+L-1 for i in range(1,N+1)] SNL = sum(NL) ate = 10**18 count = 0 for i in range(N): ate = min(ate,abs(NL[i])) if ate == abs(NL[i]): count = i print(SNL-NL[count])
p02707
s082971358
Accepted
n = int(input()) a = list(map(int, input().split())) list =[0] * n for i in range(n-1): list[a[i]-1] += 1 for i in range(n): print(list[i])
p03761
s199411691
Accepted
from collections import defaultdict from string import ascii_letters n = int(input()) words = [input() for _ in range(n)] ans = '' for c in ascii_letters: cnt = 50 for w in words: cnt = min(cnt, w.count(c)) ans += c * cnt print(ans)
p03644
s888208706
Accepted
from math import log2, floor N = int(input()) print(pow(2, floor((log2(N)))))
p03944
s793480930
Accepted
W, H, N = map(int, input().split()) bl_x, tr_x, bl_y, tr_y = 0, W, 0, H for i in range(N): x, y, a = map(int, input().split()) if a == 1: bl_x = max(bl_x, x) elif a == 2: tr_x = min(tr_x, x) elif a == 3: bl_y = max(bl_y, y) elif a == 4: tr_y = min(tr_y, y) print(max(tr_x - bl_x, 0) * max(tr_y - bl_y, 0))
p03211
s426261773
Wrong Answer
s = input() n = len(s) ans = 999 for i in range(n-3): kar = int(s[i:i+3]) ans = min(ans,abs(kar-753)) print(ans)
p03774
s236734936
Accepted
N, M = map(int,input().split()) students = [] points = [] for _ in range(N): students.append(list(map(int,input().split()))) for _ in range(M): points.append(list(map(int,input().split()))) for i in range(N): ans = -1 MIN = float('inf') for j in range(M): a, b = students[i] c, d = points[j] if MIN > abs(a-c) + abs(b-d): MIN = abs(a-c) + abs(b-d) ans = j + 1 print(ans)
p02994
s706263903
Accepted
N, L = map(int, input().split()) A = [L+i for i in range(N)] if A[0] >= 0: print(sum(A) - A[0]) exit() if A[-1] <= 0: print(sum(A) - A[-1]) exit() print(sum(A))
p02665
s811237022
Accepted
n = int(input()) nums = list(map(int, input().split())) if n == 0: if nums[0] == 1: print(1) else: print(-1) exit() if n > 0 and nums[0] != 0: print(-1) exit() n_nods = 1 ans = 1 ret = sum(nums) for i in range(1,n+1): n_nods = min(n_nods*2,ret) ans += n_nods ret -= nums[i] n_nods -= nums[i] if n_nods < 0: print(-1) exit() if n_nods == 0 and i < n: print(-1) exit() print(ans)
p03592
s984611862
Accepted
import sys n,m,k=map(int,input().split()) #n:vertical #m:horizontal for i in range(n+1): for j in range(m+1): v=i*(m-j)+j*(n-i) if v==k: print('Yes') sys.exit() print('No')
p03486
s429370162
Accepted
s = input() s = ''.join(sorted(s)) t = input() t = ''.join(sorted(t, reverse=True)) if s < t: print('Yes') else: print('No')
p02601
s025524954
Accepted
A, B, C = map(int, input().split()) K = int(input()) while K != 0: if B <= A: B *= 2 elif C <= B: C *= 2 else: break K -= 1 if (A < B) and (B < C): print('Yes') else: print('No')
p03449
s697641780
Accepted
n = int(input()) A = [list(map(int, input().split())) for _ in range(2)] ans = 0 for i in range(n): c = sum(A[0][:i + 1]) + sum(A[1][i:]) ans = max(c, ans) print(ans)
p03041
s852669742
Wrong Answer
N,K = map(int,input().split()) S = input() S[K-1].lower() print(S)
p02602
s999308089
Accepted
N, K = map(int, input().split()) A_list = list(map(int, input().split())) for i in range(K, N): if A_list[i - K] < A_list[i]: print('Yes') else: print('No')
p03345
s619841612
Accepted
a, b, c, k = map(int, input().split()) if k % 2 == 0: ans = a-b else: ans = b-a print(ans)
p03013
s884429168
Accepted
N,M=map(int, input().split()) A=set(int(input()) for _ in range(M)) D=[0]*(N+1) D[0]=1 for i in range(1,N+1): if i in A: continue D[i]=(D[i-1]+D[i-2])%(10**9+7) print(D[-1])
p02970
s933785418
Wrong Answer
import math n,d=map(int,input().split()) x=n/(n*d+1) print(math.ceil(x))
p02547
s562101934
Accepted
N = int(input()) count = 0 for i in range(N): D1,D2 = map(int,input().split()) if D1 == D2: count += 1 if count == 3: print('Yes') exit() else: count = 0 print('No')
p03338
s507987139
Accepted
from collections import OrderedDict N = int(input()) S = input() ans = 0 for i in range(N): if (i == N - 1): break L = ''.join(OrderedDict.fromkeys(S[0:i + 1])) R = ''.join(OrderedDict.fromkeys(S[i + 1:])) count = 0 for j in range(len(L)): if (L[j] in R): count += 1 else: continue ans = max(ans, count) print(ans)
p03723
s197241736
Accepted
A, B, C = map(int, input().split()) if any(map(lambda x: x % 2 == 1, (A, B, C))): print(0) elif A == B == C: print(-1) else: count = 0 while True: A, B, C = B // 2 + C // 2, A // 2 + C // 2, A // 2 + B // 2 count += 1 if any(map(lambda x: x % 2 == 1, (A, B, C))): break print(count)
p03827
s501974056
Accepted
N = int(input()) S = input() pool = [0] ans = 0 for i in range(N): if S[i] == 'I': ans += 1 else: ans -= 1 pool.append(ans) print(max(pool))
p03637
s128336174
Wrong Answer
N = int(input()) *A, = map(int, input().split()) count = 0 ans = N//3+max(N%3,0) for i in range(len(A)): if A[i]%4==0: count = count + 1 if count>=ans: print("Yes") else: print("No")
p03282
s990328752
Wrong Answer
import sys s = input() n = int(input()) for i in s: if i != '1': print(i) sys.exit()
p03219
s028471376
Wrong Answer
a,b = map(int, input().split()) print(a+b/2)
p03371
s062027630
Accepted
A,B,C,X,Y = map(int,input().split()) res = A*X +B*Y for i in range(0,max(X,Y)+1): cand = 2*i*C + max(0,X-i)*A + max(0,Y-i)*B res = min(res,cand) print(res)
p02688
s339923652
Accepted
n,k = map(int, input().split()) hito = [] for i in range(k): d = int(input()) x = list(map(int, input().split())) for j in range(d): hito.append(x[j]) a = list(set(hito)) ans = n for i in range(n): if i+1 in a: ans -= 1 print(ans)
p03037
s231949424
Accepted
N, M = map(int, input().split()) L = 1 R = N for n in range(M): l, r = map(int, input().split()) L = max(l, L) R = min(r, R) print(max(0, R - L + 1))
p02688
s486642956
Wrong Answer
n, k= map(int, input().split()) num = range(1,n) c = set() num = set(num) for i in range(k): a = input() b = set(list(map(int, input().split()))) c = b | c num = list(num -c) print(len(num))
p03479
s257805990
Wrong Answer
x,y = map(int, input().split()) z = y//x import math res = math.log(z,2) print(int(res)+1)
p02726
s750389249
Accepted
N,X,Y=map(int,input().split()) Ans=[0]*N i=1 d=0 while i<=N: j=i+1 while j<=N: d=(min(j-i,abs(X-i)+1+abs(j-Y))) Ans[d]+=1 j+=1 i+=1 k=1 while k<=N-1: print(Ans[k]) k+=1
p03778
s069099892
Accepted
W, a, b = list(map(int, input().split())) if abs(a - b) <= W: print(0) else: print(abs(a - b) - W)
p03061
s843285851
Wrong Answer
def gcd(x,y): while y>0: x,y = y,x%y return x N = int(input()) A = sorted(list(map(int,input().split()))) B = [] for i in range(1,N): b = gcd(A[0],A[i]) if b==1: B.append(b) if len(B)==0 or len(B)>1: A[0] = A[1] elif len(B)==1: A[B[0]] = A[0] a = A[0] for i in range(1,N): a = gcd(a,A[i]) print(a)
p02801
s795963875
Accepted
alpha=list('abcdefghijklmnopqrstuvwxyz') a=input() print(alpha[alpha.index(a)+1])
p02771
s032846628
Accepted
import collections li = list(map(int,input().split())) c = collections.Counter(li) if len(c) == 2: print('Yes') else: print('No')
p02773
s070994474
Wrong Answer
N = int(input()) S_list = [] for i in range(N): S_list.append(input()) sorted(S_list) name_list = [] vote_list = [] i, j = 0, 0 while i < len(S_list): name = S_list[i] while j < len(S_list) and S_list[j] == name: j += 1 name_list.append(name) vote_list.append(j - i) i = j max_vote = max(vote_list) for k in range(len(name_list)): if vote_list[k] == max_vote: print (name_list[k])
p02972
s985842114
Accepted
N=int(input()) A=list(map(int,input().split())) A=[0]+A B=[0]*(N+1) for i in range(N): k=N-i c=0 for j in range(k,N+1,k): c+=B[j] c%=2 if A[k]!=c: B[k]=1 print(sum(B)) for i in range(len(B)): if B[i]==1: print(i)
p02717
s743331916
Wrong Answer
X=int() Y=int() Z=int() 1<=X,Y,Z<=100 X,Y=Y,X Y,Z=Z,Y
p03061
s623651884
Accepted
from math import gcd N = int(input()) A = list(map(int,input().split())) front = [0] * N front[0] = A[0] for i in range(1,N): front[i] = gcd(front[i-1],A[i]) back = [0] * N back[-1] = A[-1] for i in reversed(range(N-1)): back[i] = gcd(back[i+1],A[i]) ans = max(front[-2],back[1]) for i in range(N-2): ans = max(ans,gcd(front[i],back[i+2])) print(ans)
p02597
s416753825
Accepted
N = int(input()) c = list(input()) count = 0 i = 0 j = N-1 while i < j: while c[i] == "R" and i <= N-2: i += 1 while c[j] == "W" and j >= 1: j -= 1 if i < j: count += 1 i += 1 j -= 1 if i >= j or i >= N or j <= 0: break print(count)
p03481
s742278107
Accepted
x,y = map(int,input().split()) i =x ans = [] while y >= i: i *= 2 ans.append(i) print(len(ans))
p02923
s989266174
Accepted
n,*l=map(int,open(0).read().split()) c=p=m=0 for i in l: c=(c+1)*(i<=p) m=max(m,c) p=i print(m)
p03455
s822309717
Wrong Answer
def evenodd(a,b): if (a * b) % 2 == 1: print("Odd") else: print("Even")
p02813
s339416775
Wrong Answer
import itertools import math N=int(input()) R=list(range(1,N+1)) a=tuple(map(int,input().split())) ai=0 b=tuple(map(int,input().split())) bs=0 c=0 i=0 K=list(itertools.permutations(R)) for i in range(math.factorial(N)): if K[i]==a: ai=i c+=1 elif K[i]==b: bs=i c+=1 elif c==2: break print(abs(ai-bs))
p03854
s781005299
Wrong Answer
S = input().replace("eraser","").replace("erase","").replace("dream","").replace("dreamer","") if S: print("YES") else: print("NO")
p02756
s240191151
Accepted
from collections import deque s = deque( list(input()) ) q = int(input()) l_q = [] for i in range(q): l_q.append( list(input().split()) ) #クエリ処理 c = 0 for i in l_q: if i[0] == "1": c = (c+1)%2 else: if (c+int(i[1]))%2 ==1: s.appendleft(i[2]) else: s.append(i[2]) s=list(s) if c == 1: s.reverse() s = ''.join(s) print(s)
p02608
s228092979
Wrong Answer
n = int(input()) num = [0]*(10**5+1) for i in range(1,51): for j in range(1,51): for k in range(1,51): num[(i**2 + j**2 + k**2 + i*j + j*k + k*i)] += 1 for i in range(1,n+1): print(num[i])
p03380
s984157947
Accepted
import bisect N = int(input()) A = list(map(int, input().split())) A.sort() i = A[-1] middle = i/2 j_right = bisect.bisect_right(A, middle) left = A[j_right - 1] right = A[j_right] if abs(middle - left) <= abs(middle - right): j = left else: j = right print(i, j)
p03071
s889189647
Wrong Answer
a,b=map(int,input().split()) print(max(a,b)+max(a,b)-1)
p03251
s825932440
Accepted
n,m,x,y=map(int,input().strip().split(" ")) ar1=[int(i) for i in input().strip().split(" ")] ar2=[int(i) for i in input().strip().split(" ")] ar1.append(x) ar2.append(y) m1=max(ar1) m2=min(ar2) if m2>m1: print("No War") else: print("War")
p03773
s200906859
Wrong Answer
A, B = map(int, input().split()) if A + B > 24: print(A + B - 24) else: print(A + B)
p02553
s131788488
Wrong Answer
a,b,c,d=map(int,input().split()) print(max(a*c,b*d))
p02552
s588905475
Wrong Answer
n=int(input()) print(0 if n==0 else 1)
p03210
s251129771
Accepted
N = int(input()) gre = [3,5,7] if (N in gre): print("YES") else: print("NO")
p04044
s655157623
Accepted
N,L = map(int, input().split()) s = [input() for i in range(N)] s.sort() print(''.join(s))
p03208
s060075725
Accepted
n,k = map(int, input().split()) h = [int(input()) for i in range(n)] h.sort() print(min(h[i+k-1] - h[i] for i in range(n-k+1)))
p02572
s766356922
Accepted
n = int(input()) arr = [int(x) for x in input().split()] arr.insert(0,0) prefix = [0 for x in range(n+1)] for i in range(1,n+1): prefix[i] = prefix[i-1]+arr[i]; ans = 0 mod = int(1e9+7) for i in range(1,n): ans += arr[i]*(prefix[n]-prefix[i]) print(ans%mod)
p02897
s640231788
Wrong Answer
N = int(input()) print(1.0/2.0 if (N%2)==0 else (N+1)/2*N)
p02959
s443407105
Accepted
n = int(input()) a = list(map(int, input().split())) b = list(map(int, input().split())) ans = 0 for i in range(n): if a[i] >= b[i]: ans += b[i] else: ans += a[i] nxt = min(a[i+1], b[i]-a[i]) ans += nxt a[i+1] -= nxt print(ans)
p03095
s229572805
Wrong Answer
from collections import Counter n = int(input()) S = input() R = 1000000007 #%% count = Counter(S) ans = 1 for c in count.values(): ans *= (c + 1) % R print(ans - 1)
p04029
s563522464
Wrong Answer
n=int(input()) a=0 for i in range(1,n+1): a+=i**2 print(a)
p02791
s635480619
Accepted
n = int(input()) L = list(map(int,input().split())) curmin = L[0] cnt = 1 for i in range(1,n): if L[i] < curmin: cnt += 1 curmin = L[i] print(cnt)
p03062
s239876261
Accepted
# python 3.4.3 import sys input = sys.stdin.readline # ------------------------------------------------------------- # library # ------------------------------------------------------------- # ------------------------------------------------------------- # main # ------------------------------------------------------------- N = int(input()) A = list(map(int,input().split())) cnt = 0 for i in range(N): if A[i] < 0: cnt += 1 A[i] *= -1 A.sort() if cnt%2==0: print(sum(A)) else: print(sum(A)- A[0]*2)
p03329
s836662261
Wrong Answer
n = int(input()) l = [1] + [pow(6,i) for i in range(1,15)] + [pow(9,i) for i in range(1,10)] l.sort(reverse=True) ans = 0 for i in l: ans += n // i n = n % i print(ans)
p03672
s619985469
Wrong Answer
s = input() n =(len(s)-1)//2 for i in range(n,0,-1): if s[0:i]==s[i:2*i]: print(i*2)
p03438
s609541071
Accepted
def main(): import sys input = sys.stdin.readline N = int(input()) A = list(map(int, input().split())) B = list(map(int, input().split())) plus = 0 minus = 0 for a, b in zip(A, B): if b - a > 0: plus += (b - a)//2 else: minus += a - b if plus >= minus: print('Yes') else: print('No') if __name__ == '__main__': main()
p02601
s347796118
Accepted
A,B,C = list(map(int,input().split())) K = int(input()) while A>=B: B*=2 K-=1 while B>=C: C*=2 K-=1 if K>=0: print("Yes") else: print("No")
p03545
s282049525
Accepted
import sys a = input() for bit in range(2**3): x = a[0] for i in range(3): if ((bit>>i) & 1): x += "+" else: x += "-" x += a[i+1] if eval(x) == 7: print(str(x)+"=7") sys.exit()
p02552
s491604412
Accepted
x = int(input()) print(1-x)
p03059
s633682714
Wrong Answer
A,B,T=map(int,input().split()) a=T+0.5 b=(a//A) print(b*B)
p03086
s720053811
Wrong Answer
S=input() l=len(S) x=['A','C','G','T'] a=0 m=0 for i in range(l): if S[i] in x: a+=1 else: if a>m: m=a a=0 print(m)
p02772
s371284643
Accepted
N = int(input()) A = list(map(int,input().split())) A= [i for i in A if i%2==0] if len( [j for j in A if not ((j%3==0)or(j%5==0))]) == 0: print("APPROVED") else: print("DENIED")
p03817
s802108089
Accepted
x=int(input()) ans=(x//11)*2 if x%11>6: ans+=2 elif x%11>0: ans+=1 print(ans)
p03380
s308852420
Accepted
import bisect n = int(input()) A = list(map(int,input().split())) A.sort() if n == 2: ans = [A[1],A[0]] print(*ans) exit() MAX = A[-1] target = MAX//2 ok = 0 ng = n while abs(ok-ng)>1: mid = (ok+ng)//2 if A[mid] <= target: ok = mid else: ng = mid ans = [MAX,A[ok]] nxt = ok+1 #print(A[nxt]) if nxt < n: dif0 = min(MAX-A[ok],A[ok]) dif1 = min(MAX-A[nxt],A[nxt]) if dif0 < dif1: ans[1] = A[nxt] print(*ans)
p03986
s081372848
Accepted
s = input().strip() x=0 r=0 for c in s: if c == "S": x += 1 else: if x != 0: x -= 1 r += 2 print(len(s)-r)
p03345
s839107815
Accepted
A, B, C, K = map(int, input().split()) if K % 2 == 0: ans = A-B else: ans = B-A if ans > 10**18: ans = "Unfair" print(ans)
p02702
s725893145
Wrong Answer
import collections s = input() s_len = len(s) n = 2019 mod_list = [0] * n for i in range(s_len): t = s[i:] t_i = int(t) m = t_i % n #mod_list.append(m) mod_list[m] += 1 #c = collections.Counter(mod_list) #result = sum(i * (i - 1) // 2 for i in c.values()) result = sum(i * (i - 1) // 2 for i in mod_list) print(result)
p02595
s458217291
Accepted
import math num_of_points, distance = map(int, input().split()) ans = 0 for i in range(num_of_points): X, Y = map(int, input().split()) d = math.sqrt(X ** 2 + Y ** 2) if d <= distance: ans = ans + 1 print(ans)
p03711
s741351712
Accepted
x = [1,3,5,7,8,10,12] y = [4,6,9,11] z = [2] a, b=map(int, input().split()) if (a in x and b in x) or (a in y and b in y) or (a in z and b in z): print('Yes') else: print('No')
p03327
s950162197
Accepted
a=int(input()) if a>=1000: print("ABD") else: print("ABC")
p02912
s135355573
Accepted
import heapq N, M = map(int, input().split()) A = list(map(lambda x: -int(x), input().split())) heapq.heapify(A) ans = 0 for i in range(M): most_expensive = -heapq.heappop(A) most_expensive //= 2 heapq.heappush(A, -most_expensive) print(-sum(A))
p02971
s837821811
Wrong Answer
N=int(input()) a=[] for _ in range(N): a_=int(input()) a.append(a_) x=max(a) b=a if a.count(x)>=2: for i in range(N): print(x) else: for i in range(N): if a[i]==x: b.sort() print(b[-2]) else:print(x)
p02744
s958945390
Accepted
from string import ascii_lowercase as alph def gen_pattern(N, pre=""): for i in range(ord(max(pre or "\x60"))-0x5f): pattern = pre+alph[i] if len(pattern) == N: print(pattern) else: gen_pattern(N, pattern) gen_pattern(int(input()))
p02711
s465454231
Accepted
N = int(input()) M = str(N) List = [] for i in M: if i == '7': List.append(i) else: pass if len(List) != 0: print('Yes') else: print('No')
p02951
s914049298
Wrong Answer
A, B, C = map(int, input().split()) print(C - (A - B))
p02601
s873538649
Accepted
a,b,c = map(int,input().split()) k = int(input()) for i in range(k): if a >= b: b *=2 continue elif b >= c: c *= 2 else: c *= 2 if a < b and b < c: print('Yes') else: print('No')
p02759
s076924333
Wrong Answer
n=int(input()) if n%2==0: print(n/2) else: print((n//2)+1)