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// C - Sequence #include <bits/stdc++.h> using namespace std; using ll = long long; int main(){ int N; cin>>N; vector<ll> A(N); for(int i=0; i<N; ++i) cin>>A[i]; vector<ll> C(2); for(int c=0; c<2; ++c){ int sign = c?1:-1; for(ll s=0, a=0; a<N; ++a, sign*=-1){ s += A[a]; if(sign*s<=0){ C[c]+=abs(s)+1; s=sign; } } } cout<< (C[0]<C[1]?C[0]:C[1]) <<endl; }
#include<bits/stdc++.h> using namespace std; int main(){ long N;cin>>N; vector<long>A(N),SP(N),SN(N); long ansp=0,ansn=0; for(int i=0;i<N;i++)cin>>A[i]; for(int i=0;i<N;i++){ SP[i]=(i==0?0:SP[i-1])+A[i]; if(i%2==0&&SP[i]<=0){ansp+=1-SP[i];SP[i]=1;} if(i%2==1&&SP[i]>=0){ansp+=SP[i]+1;SP[i]=-1;} } for(int i=0;i<N;i++){ SN[i]=(i==0?0:SN[i-1])+A[i]; if(i%2==0&&SN[i]>=0){ansn+=SN[i]+1;SN[i]=-1;} if(i%2==1&&SN[i]<=0){ansn+=1-SN[i];SN[i]=1;} } cout<<min(ansp,ansn); }
#include<bits/stdc++.h> using namespace std; int main(){ long long N,sum,ans,ans2; cin>>N; sum=0; ans=0; ans2=0; vector<long long>x(N); for(int i=0;i<N;i++){ cin>>x[i]; } for(int i=0;i<N;i++){ sum+=x[i]; if(i%2==0&&sum<=0){ ans+=1-sum; sum=1; } if(i%2==1&&sum>=0){ ans+=1+sum; sum=-1; } ans2=ans; } ans=0; sum=0; for(int i=0;i<N;i++){ sum+=x[i]; if(i%2==1&&sum<=0){ ans+=1-sum; sum=1; } if(i%2==0&&sum>=0){ ans+=1+sum; sum=-1; } } cout<<min(ans,ans2)<<endl; }
#include<iostream> #include<stdlib.h> using namespace std; int main(){ int n; cin>>n; long sum; long input; cin>>sum; long ans1,ans2,sum1,sum2; if(sum>0){ sum1=sum; sum2=-1; ans1=0; ans2=abs(sum)+1; } else if(sum<0){ sum1=1; sum2=sum; ans1=abs(sum)+1; ans2=0; } else{ sum1=1; sum2=-1; ans1=1; ans2=1; } for(long i=1;i<n;++i){ cin>>input; if(sum1*(sum1+input)>=0){ ans1+=abs(sum1+input)+1; if(sum1<0) sum1=1; else sum1=-1; } else sum1+=input; if(sum2*(sum2+input)>=0){ ans2+=abs(sum2+input)+1; if(sum2<0) sum2=1; else sum2=-1; } else sum2+=input; } cout<<min(ans1,ans2)<<endl; }
#include<iostream> #include<algorithm> #include<string> #include<cstdlib> #include<map> #include<iomanip> #include<sstream> using namespace std; int main(void){ const long long int mod=1000000007; long long int n,m,a[200005],plsum=0,misum=0,pl=0,mi=0; cin>>n; for(int i=0;i<n;i++){ cin>>a[i]; plsum+=a[i]; misum+=a[i]; if(plsum<=0&&i%2==0){pl+=1-plsum;plsum=1;} if(plsum>=0&&i%2==1){pl+=plsum+1;plsum=-1;} if(misum>=0&&i%2==0){mi+=1+misum;misum=-1;} if(misum<=0&&i%2==1){mi+=1-misum;misum=1;} } cout<<min(mi,pl); }
#include <bits/stdc++.h> using namespace std; int main() { int N; cin>>N; vector<int> a(N); for(int j=0;j<N;j++){ cin>>a[j]; } long c1=0, c2=0; long sum=0; // a[0]>0 for(int i=0;i<N;i++){ sum += a[i]; if(i%2==1 && sum>=0){ c1 += sum+1; sum =-1; } if(i%2==0 && sum<=0){ c1 += -sum+1; sum = 1; } } // a[0]<0 sum=0; for(int i=0;i<N;i++){ sum += a[i]; if(i%2==1 && sum<=0){ c2 += -sum+1; sum =1; } if(i%2==0 && sum>=0){ c2 += sum+1; sum = -1; } // cout<<sum<<endl; } // cout<<c1<<" "<<c2<<endl; cout<<min(c1,c2)<<endl; }
#include <bits/stdc++.h> using namespace std; #define int long long int solvePlus(vector<int> v) { int cnt = 0, sum = 0; for (int i = 0; i < v.size(); i++) { sum += v[i]; if (i % 2 == 1) { cnt = (sum < 0) ? cnt : (cnt + abs(sum) + 1); sum = (sum < 0) ? sum : -1; } else if (i % 2 == 0) { cnt = (sum > 0) ? cnt : (cnt + abs(sum) + 1); sum = (sum > 0) ? sum : 1; } } return cnt; } signed main() { int n; cin >> n; vector<int> a(n); for (auto&& w : a) cin >> w; int ans1, ans2; ans1 = solvePlus(a); for (auto&& w : a) w *= -1; ans2 = solvePlus(a); cout << min(ans1, ans2) << endl; }
#include <bits/stdc++.h> using namespace std; int a[100005]; int n; long long calc(int MOD) { long long sum = 0, res = 0; for (int i = 1; i <= n; ++i) { sum += a[i]; if (i%2 == MOD && sum <= 0) { res += (1-sum); sum = 1; } else if (i%2 != MOD && sum >= 0) { res += (sum+1); sum = -1; } } return res; } int main() { scanf("%d", &n); for (int i = 1; i <= n; ++i) scanf("%d", &a[i]); cout << min(calc(0), calc(1)); return 0; }
#include <iostream> using namespace std; int main() { int n; cin >> n; int a[n]; for (int i = 0; i < n; i++) cin >> a[i]; auto f = [&](int sign) { long long ans = 0; int sum = 0; for (int i = 0; i < n; i++) { sum += a[i]; if (sign * sum <= 0) { ans += -1 * sign * sum + 1; sum = sign; } sign = sum < 0 ? 1 : -1; } return ans; }; cout << min(f(1), f(-1)) << endl; }
#include <iostream> #include <vector> #include <algorithm> using namespace std; const long long int inf = 1e18; int main(){ int n; cin >> n; vector<int> a(n); for(int i=0; i<n; i++){ cin >> a[i]; } long long int ans = inf; for(int r=0; r<2; r++){ long long int sum=0, t=0; for(int i=0; i<n; i++){ sum += a[i]; if(i%2==r && sum<=0){ t += -sum+1; sum = 1; }else if(i%2!=r && sum>=0){ t += sum+1; sum = -1; } } ans = min(ans, t); } cout << ans << endl; return 0; }
#include<iostream> using namespace std; int main(){ int n;cin>>n; int a[n]; for(int i=0;i<n;i++) cin>>a[i]; long long s1=0,s2=0,r1=0,r2=0,ans; for(int i=0;i<n;i++){ s1+=a[i]; if((i&1)&&s1<=0){ r1=r1+1-s1; s1=1; }else if(!(i&1)&&s1>=0){ r1=r1+s1+1; s1=-1; } s2+=a[i]; if(!(i&1)&&s2<=0){ r2=r2+1-s2; s2=1; }else if((i&1)&&s2>=0){ r2=r2+s2+1; s2=-1; } } ans=min(r1,r2); cout<<ans<<endl; return 0; }
#include <bits/stdc++.h> using namespace std; int main(){ int n; cin >> n; vector<long long> a(n); long long sum1=0,sum2=0,cost1=0,cost2=0; for(int i=0;i<n;i++){ cin >> a[i]; sum1+=a[i]; sum2+=a[i]; if(i%2==0&&sum1<=0){ cost1+=1-sum1; sum1=1; } else if(i%2==1&&sum1>=0){ cost1+=sum1+1; sum1=-1; } if(i%2==0&&sum2>=0){ cost2+=1+sum2; sum2=-1; } else if(i%2==1&&sum2<=0){ cost2+=1-sum2; sum2=1; } } cout << min(cost1,cost2) << endl; }
#include<iostream> #include <algorithm> #include <string> using namespace std; int main() {int N; int C[200000]; cin >> N; for(int i=0; i<N; i++){ cin >> C[i];} long long cnt_a=0; long long cnt_b=0; int sum_a=0; int sum_b=0; for(int i=0; i<N; i++){ sum_a += C[i]; if((i%2==0)&&(sum_a<=0)){ cnt_a += 1 - sum_a; sum_a = 1;} if((i%2==1)&&(sum_a>=0)){ cnt_a += sum_a + 1; sum_a = -1;} } for(int i=0; i<N; i++){ sum_b += C[i]; if((i%2==0)&&(sum_b>=0)){ cnt_b += 1 + sum_b; sum_b = -1;} if((i%2==1)&&(sum_b<=0)){ cnt_b += 1 - sum_b; sum_b = 1;} } cout << min(cnt_a, cnt_b) << endl; }
#include<bits/stdc++.h> using namespace std; int main(){ int m,i; int64_t ans0=0,ans1=0,t=0; cin>>m; vector<int64_t> x(m); for(i=0;i<m;i++) cin>>x.at(i); for(i=0;i<m;i++){ t+=x.at(i); if(i%2==0&&t<=0){ ans0+=abs(t)+1; t=1; } else if(i%2==1&&t>=0){ ans0+=abs(t)+1; t=-1; } } t=0; for(i=0;i<m;i++){ t+=x.at(i); if(i%2==0&&t>=0){ ans1+=abs(t)+1; t=-1; } else if(i%2==1&&t<=0){ ans1+=abs(t)+1; t=1; } } cout<<min(ans0,ans1)<<endl; }
#include <iostream> using namespace std; int N, a, i, x, y; long long X, Y; int main() { cin >> N; while (cin >> a && ++i) { x += a, y += a; if (i % 2) { if (x > -1) X += x + 1, x = -1; if (y < 1) Y += 1 - y, y = 1; } else { if (y > -1) Y += y + 1, y = -1; if (x < 1) X += 1 - x, x = 1; } } cout << min(X, Y) << "\n"; }
#include <bits/stdc++.h> using namespace std; typedef long long ll; #define rep(i,n) for(int i=0;i<n;i++) int main() { int n; cin >> n; vector<ll> A(n); ll a,now1=0,cnt1=0,now2=0,cnt2=0; rep(i,n) cin >> A[i]; rep(i,n) { now1 += A[i]; now2 += A[i]; if (now1<=0) { cnt1+=abs(now1)+1;now1=1; } if (now2>=0) { cnt2+=abs(now2)+1;now2=-1; } swap(now1,now2);swap(cnt1,cnt2); } cout << min(cnt1,cnt2) << endl; }
#include <iostream> #include<algorithm> using namespace std; typedef long long ll; ll s1, s2, c1, c2; int main() { ll n, a; scanf("%lld", &n); for (int i = 1; i <= n; i++) { scanf("%lld", &a); s1 += a; s2 += a; if (i % 2) { if (s1 <= 0) c1 += 1 - s1,s1 = 1; if (s2 >= 0) c2 += 1 + s2,s2 = -1; } else { if (s1 >= 0) c1 += 1 + s1,s1 = -1; if (s2 <= 0) c2 += 1 - s2,s2 = 1; } } cout << min(c1, c2) << endl; return 0; }
#include <bits/stdc++.h> #define rep(i,n) for(int i=0;i<(n);i++) using namespace std; using lint=long long; const lint INF=1LL<<61; int main(){ int n; cin>>n; vector<int> a(n); rep(i,n) cin>>a[i]; lint ans=INF; for(int a0:{1,-1,a[0]}) if(a0!=0) { lint tmp=abs(a0-a[0]),sum=a0; for(int i=1;i<n;i++){ sum+=a[i]; if(sum-a[i]>0){ if(sum>=0){ tmp+=sum+1; sum=-1; } } else if(sum-a[i]<0){ if(sum<=0){ tmp+=1-sum; sum=1; } } } ans=min(ans,tmp); } cout<<ans<<endl; return 0; }
#include <bits/stdc++.h> using namespace std; int main(){ int n; cin >> n; long long int sum1=0,prev1=0; long long int sum2=0,prev2=0; long long int ans1=0, ans2=0; for(int i=0;i<n;i++){ long long int a; cin >> a; sum1 += a; sum2 += a; if(i%2==0){ if(sum1 >= 0){ ans1 += abs(sum1)+1; sum1 = -1; } if(sum2 <= 0){ ans2 += abs(sum2)+1; sum2 = 1; } } else { if(sum1 <= 0){ ans1 += abs(sum1)+1; sum1 = 1; } if(sum2 >= 0){ ans2 += abs(sum2)+1; sum2 = -1; } } prev1 = sum1; prev2 = sum2; } cout << min(ans1, ans2) << endl; return 0; }
#include <bits/stdc++.h> using namespace std; typedef long long ll; int main() { int n; cin >> n; vector<int>a(n); for (int i = 0; i < n; i++)cin >> a.at(i); ll ans = 1e18; bool x = true; for (int i = 0; i < 2; i++) { ll res = 0; ll sig = 0; for (int j = 0; j < n; j++) { if (x) { sig += a.at(j); x = false; if (sig > 0)continue; else { res += abs(1 - sig); sig = 1; } } else { sig += a.at(j); x = true; if (sig < 0)continue; else { res += abs(-1 - sig); sig = -1; } } } x = false; ans = min(ans, res); } cout << ans << endl; }
#include <iostream> #include<sstream> #include<vector> #include<iterator> #include<cmath> using namespace std; long long f(int sign, const vector<long long>& a) { long long cnt = 0; long long sum = 0; for(int i=0; i<a.size(); i++) { sum += a[i]; if(sign*sum <= 0) { long long d = sign - sum; sum += d; cnt += abs(d); } sign *= -1; } return cnt; } int main(void) { int n; cin >> n; vector<long long> a(n); for(int i=0; i<n; i++) cin >> a[i]; long long sum[2]; sum[0] = f(1, a); sum[1] = f(-1, a); cout << min(sum[0], sum[1]) << endl; return 0; }
#include <iostream> #include <algorithm> #include <string> #include <vector> #include <math.h> #define MOD 1000000007 typedef long long ll; using namespace std; int main(){ int n; cin>>n; ll a[n]; for(int i=0;i<n;i++){ cin>>a[i]; } ll ans1=0,ans2=0; ll s=0; for(int i=0;i<n;i++){ s+=a[i]; if(i%2==0&&s<=0){ ans1+=1-s; s=1ll; }else if(i%2==1&&s>=0){ ans1+=s+1; s=-1ll; } } s=0; for(int i=0;i<n;i++){ s+=a[i]; if(i%2==1&&s<=0){ ans2+=1-s; s=1ll; }else if(i%2==0&&s>=0){ ans2+=s+1; s=-1ll; } } cout<<min(ans1,ans2)<<endl; return 0; }
#include <bits/stdc++.h> using namespace std; using ll = long long; const int INF = 1e9; const int MOD = 1e9 + 7; int main() { int n; cin >> n; vector<ll> a(n); for (auto &e : a) cin >> e; ll ans = 1e16; for (int i = 0; i < 2; ++i) { ll cnt = 0, sum = 0; for (int j = 0; j < n; ++j) { sum += a[j]; if (j % 2 == i) { if (sum <= 0) { cnt += abs(sum) + 1; sum = 1; } } else { if (sum >= 0) { cnt += abs(sum) + 1; sum = -1; } } } ans = min(cnt, ans); } cout << ans << endl; return 0; }
#include <iostream> using namespace std; int main(){ int n; long sum1 = 0; long sum2 = 0; long op1 = 0; long op2 = 0; cin >> n; for(int i = 0; i <n; i++){ int tmp; cin >> tmp; sum1 += tmp; sum2 += tmp; if(i%2){ if(sum1 >= 0) { op1 += sum1 + 1; sum1 = -1; } if(sum2 <= 0) { op2 += -sum2 + 1; sum2 = 1; } } else { if(sum1 <= 0) { op1 += -sum1 + 1; sum1 = 1; } if(sum2 >= 0) { op2 += sum2 + 1; sum2 = -1; } } } if(op1 < op2) cout << op1; else cout << op2; return 0; }
#include<iostream> #include<vector> #include<cmath> using namespace std; int main(void) { long n; cin >> n; long a[n]; for(int i=0;i<n;++i) { cin >> a[i]; } long tmp1=0, tmp2=0; long ans1=0, ans2=0; for(int i=1;i<=n;++i){ tmp1 += a[i-1]; tmp2 += a[i-1]; if(i%2){ if(tmp1 <= 0){ ans1 += 1 - tmp1; tmp1 = 1; } if(tmp2 >= 0){ ans2 += 1 + tmp2; tmp2 = -1; } } else{ if(tmp1 >= 0){ ans1 += 1 + tmp1; tmp1 = -1; } if(tmp2 <= 0){ ans2 += 1 - tmp2; tmp2 = 1; } } } cout << min(ans1, ans2) << endl; }
#include <iostream> #include <vector> #include <cmath> #include <algorithm> #include <cstdint> int main() { int n; std::cin >> n; std::vector<int> vec(n); for (auto&& e : vec) std::cin >> e; auto solve = [&](bool positive) { int64_t ret = 0; int sum = 0; for (int i = 0; i < vec.size(); ++i) { sum += vec[i]; if (sum == 0 || positive != sum > 0) { ret += std::abs(sum) + 1; sum = (positive ? 1 : -1); } positive = !positive; } return ret; }; std::cout << std::min(solve(true), solve(false)) << std::endl; }
#include <iostream> #include<algorithm> using namespace std; typedef long long ll; ll s1, s2, c1, c2; int main() { ios::sync_with_stdio(0); cin.tie(0); ll n, a; cin >> n; for (int i = 1; i <= n; i++) { cin >> a; s1 += a; s2 += a; if (i % 2) { if (s1 <= 0) c1 += 1 - s1,s1 = 1; if (s2 >= 0) c2 += 1 + s2,s2 = -1; } else { if (s1 >= 0) c1 += 1 + s1,s1 = -1; if (s2 <= 0) c2 += 1 - s2,s2 = 1; } } cout << min(c1, c2) << endl; return 0; }
#include <iostream> #include <cmath> using namespace std; int main(){ int n;cin>>n; int a[n]; for(int i = 0; n > i; i++)cin>>a[i]; long long sh = 0; long long nw = 0; for(int i = 0; n > i; i++){ nw = (long long)nw+a[i]; if(i % 2 == 0)if(nw<=0)sh = (long long)sh+1-nw,nw=1; if(i % 2 == 1)if(nw>=0)sh = (long long)sh+nw+1,nw=-1; } long long hs = 0; nw = 0; for(int i = 0; n > i; i++){ nw = (long long)nw+a[i]; if(i % 2 == 1)if(nw<=0)hs = (long long)hs+1-nw,nw=1; if(i % 2 == 0)if(nw>=0)hs = (long long)hs+nw+1,nw=-1; } cout << min(hs,sh) << endl; }
#include <iostream> #include <algorithm> using namespace std; long long n,no,ans,notw,anstw; int main(){ cin>>n; int a; for(int i=0;i<n;i++){ cin>>a; if(no>0){ no+=a; if(no>=0){ ans+=no+1; no=-1; } }else{ no+=a; if(no<=0){ ans+=no*-1+1; no=1; } } if(notw>=0){ notw+=a; if(notw>=0){ anstw+=notw+1; notw=-1; } }else{ notw+=a; if(notw<=0){ anstw+=notw*-1+1; notw=1; } } } cout<<min(ans,anstw)<<endl; return 0; }
#include<iostream> #include<vector> using namespace std; int main(){ int n,i; cin>>n; vector<long long>a(n+1); for(i=1;i<=n;i++)cin>>a[i]; for(i=1;i<n;i++)a[i+1]+=a[i]; long o=0,oc=0,e=0,ec=0; for(i=1;i<=n;i++){ if(i%2){ if(a[i]+o<1)oc+=1-a[i]-o,o+=1-a[i]-o; if(a[i]+e>-1)ec+=1+a[i]+e,e-=1+a[i]+e; } else{ if(a[i]+o>-1)oc+=1+a[i]+o,o-=1+a[i]+o; if(a[i]+e<1)ec+=1-a[i]-e,e+=1-a[i]-e; } } cout<<min(oc,ec)<<endl; return 0; }
#include <bits/stdc++.h> using namespace std; typedef long long ll; typedef pair<int, int> pii; #define rep(i, n) for(ll i = 0;i < n;i++) int main() { cin.tie(0); ios::sync_with_stdio(false); int n; cin >> n; int a[100000]; rep(i, n) cin >> a[i]; ll ans = 1LL<<62; ll sum[100001] = {}; // parity rep(p, 2) { ll cnt = 0; rep(i, n) { int border = 1+(p+i)%2*-2; sum[i+1] = sum[i] + a[i]; if (border == 1 && sum[i+1] >= border) continue; if (border == -1 && sum[i+1] <= border) continue; cnt += abs(border-sum[i+1]); sum[i+1] = border; } ans = min(ans, cnt); } cout << ans << endl; }
#include<cstdio> #include<cstdlib> #include<cstring> #include<cmath> #include<climits> #include<iostream> #include<sstream> #include<utility> #include<map> #include<vector> #include<queue> #include<algorithm> #include<set> #include<stack> using namespace std; typedef long long ll; typedef pair<int,int>P; int A[100005],N; ll ch(int p) { ll t=0,r=0; for(int i=0;i<N;i++,p*=-1) { t+=A[i]; if(t*p<=0) { if(p==-1){r+=abs(-1-t);t=-1;} else {r+=abs(1-t);t=1;} } } return r; } int main() { scanf("%d",&N); for(int i=0;i<N;i++)scanf("%d",&A[i]); printf("%lld\n",min(ch(1),ch(-1))); return 0; }
#include <iostream> #include <vector> using namespace std; using ll = long long; int main() { ll n, ans1{}, ans2{}, s1{}, s2{}, t[2] = {1,-1};; cin >> n; vector<ll> a(n); for (ll &x: a) cin >> x; for (int i = 0; i != n; ++i) { s1 += a[i]; s2 += a[i]; auto p = t[i%2]; if (s1 * p <= 0) { ans1 += abs(p - s1); s1 = p; } if (s2 * -p <= 0) { ans2 += abs(p + s2); s2 = -p; } } cout << min(ans1,ans2) << endl; }
#include<bits/stdc++.h> using namespace std; typedef long long lint; const int MAX_N = 1e5; lint N, a[MAX_N+5]; lint solve(lint next){ lint s = 0, cnt = 0; for(int i=0;i<N;i++){ s += a[i]; if(next==1 && s<=0){ cnt += next - s; s = 1; }else if(next==-1 && s>=0){ cnt += s - next; s = -1; } next *= -1; } return cnt; } int main(){ cin >> N; for(int i=0;i<N;i++) cin >> a[i]; cout << min(solve(1), solve(-1)) << endl; return 0; }
#include <iostream> #include <cstdio> using namespace std; typedef long long ll; const int MAX = 1e5; int n; int a[MAX]; ll solve(bool flag, ll sum) { ll res = 0; for (int i = 0; i < n; i++) { sum += a[i]; if (flag) { if (sum >= 0) { res += sum + 1; sum = -1; } } else { if (sum <= 0) { res += -sum + 1; sum = 1; } } flag = !flag; } return res; } int main() { cin >> n; for (int i = 0; i < n; i++) scanf("%d", a + i); // 貪欲法で操作回数の最小値を求める // プラスから始まるパターンとマイナスから始まるパターンの2パターン試して、その小さい方が答え cout << min(solve(true, 0), solve(false, 0)) << endl; return 0; }
#include <bits/stdc++.h> using namespace std; int n; long long a[100007]; long long solve() { long long res = 0; long long sum = 0; for(int i=0;i<n;i++) { if(i%2 == 0) { if(sum+a[i] <= 0) { res += llabs(sum+a[i]-1); sum = 1; } else sum += a[i]; } else { if(sum+a[i] >= 0) { res += llabs(sum+a[i]+1); sum = -1; } else sum += a[i]; } } return res; } int main() { cin >> n; for(int i=0;i<n;i++) cin >> a[i]; long long ans = solve(); for(int i=0;i<n;i++) a[i] *= -1; ans = min(ans,solve()); cout << ans << endl; return 0; }
#include <bits/stdc++.h> using namespace std; int main(){ int n; cin>>n; vector<int> a(n); for(int i=0; i<n; ++i)cin>>a[i]; long long ans1=0LL, ans2=0LL, sum=0LL; for(int i=0; i<n; ++i){ sum+=a[i]; if(i%2==0 && sum<=0){ans1+=1-sum; sum=1;} else if(i%2==1 && sum>=0){ans1+=1+sum; sum=-1;} } sum=0; for(int i=0; i<n; ++i){ sum+=a[i]; if(i%2==1 && sum<=0){ans2+=1-sum; sum=1;} else if(i%2==0 && sum>=0){ans2+=1+sum; sum=-1;} } cout<<min(ans1, ans2)<<endl; }
#include <bits/stdc++.h> using namespace std; typedef long long ll; int main() { int n; cin >> n; vector<ll> a(n); for(int i=0; i<n; i++) cin >> a[i]; ll sum = 0, ans1 = 0; for(int i=0; i<n; i++) { sum += a[i]; if(i%2 == 0 && sum <= 0) { ans1 += 1 - sum; sum = 1; } if(i%2 == 1 && sum >= 0) { ans1 += 1 + sum; sum = -1; } } sum = 0; ll ans2 = 0; for(int i=0; i<n; i++) { sum += a[i]; if(i%2 == 1 && sum <= 0) { ans2 += 1 - sum; sum = 1; } if(i%2 == 0 && sum >= 0) { ans2 += 1 + sum; sum = -1; } } cout << min(ans1, ans2) << endl; }
#include <bits/stdc++.h> using namespace std; using ll = long long; #define rep(i, s, t) for (int i = s; i <= t; i++) ll ans1, ans2, sum; int n; int a[100010]; int main() { cin >> n; rep(i, 0, n - 1) cin >> a[i]; sum = 0; for (int i = 0, s = 1; i < n; i++, s *= -1) { sum += a[i]; if (sum * s <= 0) { ans1 += abs(sum - s); sum = s; } } sum = 0; for (int i = 0, s = -1; i < n; i++, s *= -1) { sum += a[i]; if (sum * s <= 0) { ans2 += abs(sum - s); sum = s; } } cout << min(ans1, ans2) << endl; }
#include "bits/stdc++.h" using namespace std; typedef long long ll; const ll MOD = 1e9 + 7; const ll INF = 1LL << 60; const double PI = 3.141592653589793238; const double EPS = 1e-10; int a[100000]; int main() { int n; cin >> n; for (int i = 0; i < n; i++) { cin >> a[i]; } ll ans = INF; for (int b = 0; b < 2; b++) { bool plus = b; ll cost = 0; ll sum = 0; for (int i = 0; i < n; i++) { sum += a[i]; if (plus) { if (sum <= 0) cost += 1 - sum, sum = 1; } else { if (sum >= 0) cost += sum + 1, sum = -1; } plus ^= 1; } ans = min(ans, cost); } cout << ans << endl; }
#include <bits/stdc++.h> #define rep(i, n) for (int i = 0; i < (n); ++i) typedef long long ll; using namespace std; int n, a[100010]; ll calc(ll s) { ll sum = 0, res = 0; for (int i = 0; i < n; ++i, s *= -1) { sum += a[i]; if (sum * s > 0) continue; if (s > 0) res += (-sum + s), sum += (-sum + s); else res += (sum - s), sum += -(sum - s); } return res; } int main() { cin >> n; rep(i, n) cin >> a[i]; cout << min(calc(1), calc(-1)) << endl; return 0; }
#include <iostream> using namespace std; int main(void){ int n; long long a,b=0,c=0,d=0,e=0; cin>>n; for(int i=0;i<n;i++){ cin>>a; b+=a; c+=a; if(i%2==0){ if(b>=0){ d+=b+1; b=-1; } if(c<=0){ e+=-c+1; c=1; } }else{ if(b<=0){ d+=-b+1; b=1; } if(c>=0){ e+=c+1; c=-1; } } } cout<<min(d,e)<<endl; }
#include <bits/stdc++.h> using namespace std; int main() { ios::sync_with_stdio(false); cin.tie(0); int n; cin >> n; vector<int> a(n); for (int i = 0; i < n; i++) cin >> a[i]; long long c1 = 0, c2 = 0, s1 = 0, s2 = 0; for (int i = 0; i < n; i++) { s1 += a[i]; s2 += a[i]; if (i & 1) { if (s1 >= 0) {c1 += s1 + 1; s1 = -1;} if (s2 <= 0) {c2 += 1 - s2; s2 = 1;} } else { if (s1 <= 0) {c1 += 1 - s1; s1 = 1;} if (s2 >= 0) {c2 += s2 + 1; s2 = -1;} } } cout << min(c1, c2) << endl; }
#include<iostream> #define rep(i,n) for(int i=0;i<n;++i) using namespace std; int n, a[100000]; int64_t solve(bool plus) { int64_t ret = 0, sum = 0; rep(i, n) { sum += a[i]; if (plus && sum <= 0 || !plus && sum >= 0) { ret += abs(sum) + 1; sum = plus ? 1 : -1; } plus ^= true; } return ret; } int main() { cin >> n; rep(i, n) cin >> a[i]; cout << min(solve(true), solve(false)) << endl; }
#include <bits/stdc++.h> using namespace std; #define ll long long constexpr ll inf = 1e9+7; ll solve(vector<ll> As, bool flag) { ll ans = 0; ll sum = 0; for (auto A : As) { sum += A; if (flag && sum <= 0) { ans += 1 - sum; sum = 1; } else if (!flag && sum >= 0) { ans += 1 + sum; sum = -1; } flag = !flag; } return ans; } int main () { cin.tie(0); ios::sync_with_stdio(false); ll N; cin>>N; vector<ll> A(N); for (ll n = 0; n < N; n++) cin>>A[n]; cout<<min(solve(A, false), solve(A, true))<<endl; return 0; }
/* "It's okay if you hate me. I hate me too." */ #include <bits/stdc++.h> using namespace std; int a[100005]; int n; long long calc(int MOD) { long long sum = 0, res = 0; for (int i = 1; i <= n; ++i) { sum += a[i]; if (i%2 == MOD && sum <= 0) { res += (1-sum); sum = 1; } else if (i%2 != MOD && sum >= 0) { res += (sum+1); sum = -1; } } return res; } int main() { scanf("%d", &n); for (int i = 1; i <= n; ++i) scanf("%d", &a[i]); cout << min(calc(0), calc(1)); return 0; }
#include <iostream> #include <algorithm> #include <map> #include <string> #include <math.h> typedef long long ll; using namespace std; int main(){ int n; cin >> n; ll a[100001]={0}; for (int i=0;i<n;i++) cin >> a[i]; bool sign=true; ll res=0,res2=0,sum=0; for (int x=0;x<2;x++){ res=0; sum=0; for (int i=0;i<n;i++){ sum+=a[i]; if (sign){ if (sum <= 0){ res+=1-sum; sum=1; } sign=false; } else { if (sum >= 0){ res+=1+sum; sum=-1; } sign=true; } } sign=false; if (x == 0) res2=res; } cout << min(res,res2) << endl; return 0; }
#include<bits/stdc++.h> #define REP(i,n) for(int i=0,i##_len=(n);i<i##_len;++i) using namespace std; signed main(){ int N;cin>>N; vector<long long> A(N); REP(i, N) cin >> A[i]; long long ans=LLONG_MAX; int sig[2]={1,-1}; REP(j,2){ long long sum=0; long long count=0; REP(i,N){ sum+=A[i]; if(i%2==0&&sig[j]*sum<=0){ count+=llabs(sum-sig[j]*1); sum=sig[j]*1; } if(i%2==1&&sig[j]*sum>=0){ count+=llabs(sum+sig[j]*1); sum=-1*sig[j]; } } ans=min(ans,count); } cout<<ans<<endl; }
#include <bits/stdc++.h> #define rep(i,n) for(int i=0;i<(n);i++) using namespace std; using ll = long long; const ll INF = 1LL << 61; int main(){ int n; cin >> n; vector<int> a(n); rep(i,n) cin >> a[i]; ll ans = INF; for(int a0 : {1,-1,a[0]} ) if(a0 != 0) { ll tmp = abs(a0 - a[0]), sum = a0; for(int i = 1; i < n; i++){ sum += a[i]; if(sum - a[i] > 0){ if(sum >= 0){ tmp += sum + 1; sum = -1; } } else if(sum - a[i] < 0){ if(sum <= 0){ tmp += 1 - sum; sum = 1; } } } ans = min(ans, tmp); } cout << ans << endl; }
#include<bits/stdc++.h> using namespace std; #define ll long long #define mp make_pair #define pb push_back ll n,a[100005],sum,cnt1,cnt2; int main(){ cin>>n; for(int i=1;i<=n;i++) cin>>a[i]; for(int i=1;i<=n;i++){ sum+=a[i]; if(i%2 && sum<=0){ cnt1+=1-sum; sum=1; } if(i%2==0 && sum>=0){ cnt1+=sum+1; sum=-1; } } sum=0; for(int i=1;i<=n;i++){ sum+=a[i]; if(i%2==0 && sum<=0){ cnt2+=1-sum; sum=1; } if(i%2 && sum>=0){ cnt2+=sum+1; sum=-1; } } cout<<min(cnt1,cnt2); return 0; }
#include <bits/stdc++.h> #define rep(i, n) REP(i, 0, n) #define REP(i, l, r) for (int i = l; i < r; ++i) #define int long long using namespace std; typedef pair<int, int> P; signed main() { int n; cin >> n; vector<int> a(n); rep(i, n) { cin >> a[i]; if (i) a[i] += a[i - 1]; } int out = LLONG_MAX; rep(i, 2) { int cnt = 0, ans = 0; rep(j, n) { if (j % 2 == i) { ans += max(1 - (a[j] + cnt), 0ll); cnt += max(1 - (a[j] + cnt), 0ll); } else { ans += max((a[j] + cnt) + 1, 0ll); cnt += min(-(a[j] + cnt) - 1, 0ll); } } out = min(out, ans); } cout << out << endl; }
#include <bits/stdc++.h> using namespace std; int main(){ int n; cin>>n; vector<int64_t> a(n); for(int i=0;i<n;++i){ cin>>a.at(i); } int64_t S1=0,S2=0,count1=0,count2=0; //odd>0,even<0 for(int i=0;i<n;++i){ S1 += a.at(i); if(i%2!=0 && S1<=0){ count1 += (1-S1); S1=1; } else if(i%2==0 && S1>=0){ count1 += (1+S1); S1=-1; } } //odd<0,even>0 for(int i=0;i<n;++i){ S2 += a.at(i); if(i%2!=0 && S2>=0){ count2 += (1+S2); S2=-1; } else if(i%2==0 && S2<=0){ count2 += (1-S2); S2=1; } } cout<<min(count1,count2)<<endl; }
#include <bits/stdc++.h> #define ll long long using namespace std; int main() { int n; ll c = 0, d = 0, pm = 0, mp = 0; scanf("%d", &n); for(int i = 0; i < n; i++) { int a; scanf("%d", &a); pm += a; mp += a; if(pm * (i % 2 ? -1 : 1) <= 0) { c += abs(pm) + 1; pm = i % 2 ? -1 : 1; } if(mp * (i % 2 ? -1 : 1) >= 0) { d += abs(mp) + 1; mp = i % 2 ? 1 : -1; } } printf("%lld\n", min(c, d)); }
#include <bits/stdc++.h> using namespace std; #define rep(i,n) for(int i = 0; i < (int)n; i++) using ll = long long; int main(){ int n; cin >> n; ll a[n]; rep(i,n) cin >> a[i]; ll c = 0, d = 0, s = 0, t = 0; rep(i,n) { s += a[i]; t += a[i]; if(i % 2 == 0) { if(s <= 0) { c += 1 - s; s = 1; } if(t >= 0) { d += t + 1; t = -1; } } else { if(s >= 0) { c += s + 1; s = -1; } if(t <= 0) { d += 1 - t; t = 1; } } } cout << min(c,d) << endl; return 0; }
#include <iostream> #include <vector> using namespace std; long long ope_cnt(vector<long long> a, int n, bool plus) { long long sum = 0, ret = 0; for (int i = 0; i < n; i++) { sum += a[i]; if (plus && sum <= 0) { ret += 1 - sum; sum = 1; } else if (!plus && sum >= 0) { ret += 1 + sum; sum = -1; } plus = !plus; } return ret; } int main() { int n; cin >> n; vector<long long> a(n); for (int i = 0; i < n; i++) cin >> a[i]; long long ans_p = ope_cnt(a, n, true); long long ans_m = ope_cnt(a, n, false); cout << min(ans_p, ans_m) << endl; }
// Sequence #include <iostream> #include <stdlib.h> #include <algorithm> using namespace std; int n; int a[100000]; long long c[2]; int main(){ cin>>n; for(int i=0;i<n;i++)cin>>a[i]; for(int C=0;C<2;C++){ int sign=C*2-1; int sum=0; for(int i=0;i<n;i++){ if((sum+a[i])*sign<1){ c[C]+=abs(sum+a[i]-sign); sum=sign; }else sum+=a[i]; sign*=-1; } } cout<<min(c[0],c[1]); }
#include<bits/stdc++.h> using namespace std; int main(){ int n; long re,ro,se,so; re=ro=se=so=0; cin>>n; vector<int> a(n); for(int i=0;i<n;i++)cin>>a[i]; for(int i=0;i<n;i++){ se+=a[i],so+=a[i]; if(i%2){ if(se<0 && so>0)continue; else{ if(se>=0)re+=1+se,se-=1+se; if(so<=0)ro+=1-so,so+=1-so; } }else{ if(se>0 && so<0)continue; else{ if(se<=0)re+=1-se,se+=1-se; if(so>=0)ro+=1+so,so-=1+so; } } } cout<<min(re,ro)<<endl; }
#include <bits/stdc++.h> using namespace std; #define rep(i,n) REP(i,0,n) #define REP(i,a,n) for(int i = a ; i < (int)n ; i++) typedef long long int ll; int sign(int a){ return a/abs(a); } int main(){ cin.tie(0); ios::sync_with_stdio(false); ll a[100001]; int n; cin>>n; rep(i,n) cin >> a[i]; ll sum=0; ll c=1; ll c1=0,c2=0; //奇数番目を正とする rep(i,n){ sum+=a[i]; if(sum*c<=0){ c1+=abs(sum)+1; sum=c; } c*=-1; } //奇数番目を偶数とする c=-1; sum=0; rep(i,n){ sum+=a[i]; if(sum*c<=0){ c2+=abs(sum)+1; sum=c; } c*=-1; } cout<<min(c1,c2)<<endl; //system("pause"); return 0; }
#include <iostream> #include <vector> #include <set> #include <utility> #include <string> #include <algorithm> #include <cmath> typedef long long ll; using namespace std; int a[100005]; int n; ll calc(int mod) { ll sum = 0, res = 0; for (int i = 1; i <= n; i++){ sum += a[i]; if (i % 2 == mod && sum <= 0){ res += (1 - sum); sum = 1; } else if(i % 2 != mod && sum >= 0){ res += (sum + 1); sum = -1; } } return res; } int main() { cin >> n; for (int i = 1; i <= n; i++){ cin >> a[i]; } cout << min(calc(0), calc(1)) << endl; return 0; }
#include <bits/stdc++.h> using namespace std; #define REP(i, n) for(int i = 0; i < n; i++) using ll = long long; int n; int a[100000]; ll solve(ll t){ ll res = 0, sum = 0; for (ll i = 0; i < n; i++, t = -t){ sum += a[i]; if (sum * t > 0) continue; res += abs(sum - t); sum += t * abs(sum - t); } return res; } int main(){ cin >> n; REP(i,n) cin >> a[i]; ll res = solve(1); res = min(res, solve(-1)); cout << res << endl; return 0; }
#include <bits/stdc++.h> using namespace std; int main() { int n; cin >> n; vector<int64_t> a_vec(n); for (int i = 0; i < n; ++i) cin >> a_vec.at(i); int64_t min_step; for (int j = 0; j < 2; ++j) { int sign = 2 * j - 1; int64_t sum = 0; int64_t step = 0; for (int i = 0; i < n; ++i, sign *= -1) { sum += a_vec.at(i); if (sign * sum > 0) continue; step += - sign * sum + 1; sum = sign; } if (j == 0 || min_step > step) min_step = step; } cout << min_step << endl; }
#include <bits/stdc++.h> using namespace std; #define REP(i,n) for(int(i)=0;i<(n);i++) typedef long long ll; int main(){ int n;cin>>n;ll p=0,m=0; vector<int> a(n,0); REP(i,n) cin>>a.at(i); //プラスで始める場合 int sm=0; REP(i,n){ sm+=a.at(i); if(!(i%2)){ while(sm<=0){ p++; sm++; } }else{ while(sm>=0){ p++; sm--; } } } //マイナスで始める場合 sm=0; REP(i,n){ sm+=a.at(i); if(!(i%2)){ while(sm>=0){ m++; sm--; } }else{ while(sm<=0){ m++; sm++; } } } cout<<min(m,p)<<endl; }
#include <bits/stdc++.h> using namespace std; typedef long long ll; ll cnt = 1e15; int main(){ int n; cin >> n; int a[n]; for(int i=0;i<n;i++) cin >> a[i]; for(int j=0;j<2;j++){ ll cnt1 = 0,s = 0; for(int i=0;i<n;i++){ s += a[i]; int k = (1-2*(i%2))*(1-2*j); if(s*k<=0){ cnt1 += 1-k*s; s = k; } } cnt = min(cnt1,cnt); } cout << cnt << endl; }
#include<iostream> #include<vector> using namespace std; typedef long long li; #define rep(i,n) for(int i=0;i<(n);i++) #define df 0 template<class T> void print(const T& t){ cout << t << "\n"; } template<class T, class... Ts> void print(const T& t, const Ts&... ts) { cout << t; if (sizeof...(ts)) cout << " "; print(ts...); } int main(){ int n; cin >>n; vector<li> s(2,0),c(2,0); rep(i,n){ li a; cin >>a; rep(j,2){ s[j]+=a; if((i+j)%2){ if(s[j]>=0){ c[j]+=s[j]+1; s[j]=-1; } }else{ if(s[j]<=0){ c[j]+=-s[j]+1; s[j]=1; } } } } print(min(c[0],c[1])); }
#include <iostream> #include <vector> using namespace std; int main() { long long n; cin >> n; vector<long long> a(n); for (int i = 0; i < n; i++) { cin >> a[i]; } long long ans = 1e18; for (int b = 0; b < 2; b++) { long long s = 0, now = 0; for (int i = 0; i < n; i++) { long long c = i%2==b ? 1 : -1; s += a[i]; if (s <= 0 && c == 1) { now += c - s; s = 1; } else if (s >= 0 && c == -1) { now += s - c; s = -1; } } ans = min(ans, now); } cout << ans << endl; return 0; }
#include <iostream> #include <cmath> using namespace std; #define rep(i,n) REP(i,0,n) #define REP(i,a,n) for(int i = a ; i < (int)n ; i++) signed main(){ long long a[100001]; long long n; cin >> n; rep(i,n){ cin >> a[i]; } long long c1 = 0, c2 = 0; long long sum = 0; long long c = 1; // 奇数番目を正 REP(i,0,n){ sum += a[i]; if(sum * c <= 0){ c1 += (abs(sum)+1); sum = c; } c*=(-1); } // 偶数番目が正 c = -1; sum = 0; REP(i,0,n){ sum += a[i]; if(sum * c <= 0){ c2 += abs(sum)+1; sum = c; } c*=(-1); } cout << min(c1, c2) << endl; }
#include<bits/stdc++.h> using namespace std; using ll = long long; int N; const int MAX_N = 1e5 + 10; int A[MAX_N]; ll cnt(bool flg) { ll sm = (ll)A[0], res = 0; if(flg && sm <= 0) res += -sm + 1, sm = 1; if(!flg && sm >= 0) res += sm + 1, sm = -1; for(int i = 1; i < N; ++i) { flg = sm > 0; sm += (ll)A[i]; if(flg && sm >= 0) res += sm + 1, sm = -1; if(!flg && sm <= 0) res += -sm + 1, sm = 1; } return res; } int main() { scanf("%d", &N); for(int i = 0; i < N; ++i) scanf("%d", &A[i]); ll res = min(cnt(true), cnt(false)); printf("%lld\n", res); return 0; }
#include <cstdio> #include <algorithm> #define maxn 100010 using namespace std; int n; long long a[maxn]; long long ans1,ans2; long long sum; int main() { scanf("%d",&n); for (int i=1;i<=n;i++) { scanf("%lld",&a[i]); } sum=0LL; ans1=0LL; for (int i=1;i<=n;i++) { sum+=a[i]; if (i%2==1) { if (sum<=0) { ans1+=1-sum; sum=1; } } else if (sum>=0) { ans1+=sum+1; sum=-1; } } sum=0LL; ans2=0LL; for (int i=1;i<=n;i++) { sum+=a[i]; if (i%2==0) { if (sum<=0) { ans2+=1-sum; sum=1; } } else if (sum>=0) { ans2+=sum+1; sum=-1; } } printf("%lld\n",min(ans1,ans2)); return 0; }
#include <iostream> #include <algorithm> #include <vector> using namespace std; using ll = long long; using vi = vector<int>; #define rep(i,n) for(int i=0,_i=(n);i<_i;++i) constexpr int sign(int n) { return n < 0 ? -1 : n > 0; } int main() { int N; cin >> N; vi A(N); rep(i, N) cin >> A[i]; ll ans = 1e18; rep(k, 2) { ll sum = 0, tmp = 0; int SIGN = k*2-1; rep(i, N) { SIGN *= -1; if (sign(sum+A[i]) != SIGN) { tmp += abs(SIGN - (sum + A[i])); sum = SIGN; } else sum += A[i]; } if (sum == 0) ++tmp; ans = min(ans, tmp); } cout << ans << endl; return 0; }
#include<iostream> #include<vector> #include<algorithm> using namespace std; int main() { int n; cin >> n; vector<int>a(n); for (auto&& x : a)cin >> x; long long ans1 = 0, ans2 = 0, sum = 0; for (int i = 0; i < n; i++) { sum += a[i]; if (i % 2 == 0 && sum <= 0) { ans1 += -sum + 1; sum = 1; } else if (i % 2 == 1 && sum >= 0) { ans1 += sum + 1; sum = -1; } } sum = 0; for (int i = 0; i < n; i++) { sum += a[i]; if (i % 2 == 1 && sum <= 0) { ans2 += -sum + 1; sum = 1; } else if (i % 2 == 0 && sum >= 0) { ans2 += sum + 1; sum = -1; } } cout << min(ans1, ans2) << endl; return 0; }
#include <bits/stdc++.h> using namespace std; int main(){ int N; cin >> N; vector<long> a(N); for(int i=0; i<N; i++){ cin >> a.at(i); } long sump=0,sumn=0,p=0,n=0; for(int i=0; i<N; i++){ sump+=a.at(i); if(i%2==0&&sump<=0){ p+=1-sump; sump=1; } if(i%2==1&&sump>=0){ p+=1+sump; sump=-1; } } for(int i=0; i<N; i++){ sumn+=a.at(i); if(i%2==0&&sumn>=0){ n+=1+sumn; sumn=-1; } if(i%2==1&&sumn<=0){ n+=1-sumn; sumn=1; } } cout << min(p,n) << endl; }
// C - Sequence #include <bits/stdc++.h> using namespace std; using ll = long long; #define up(i,s,e,d) for(int i=(s);i<(e);i+=(d)) ll counting(vector<ll> &A, int N, bool OddEven){//OddEven: odd true, even false ll c = 0, csum = 0; up(i,0,N,1){ csum += A[i]; if(i%2==OddEven && csum<=0){// -0 NG c += abs(csum) + 1; csum = 1; } if(i%2==!OddEven && csum>=0){// +0 NG c += abs(csum) + 1; csum = -1; } } return c; } int main(){ int N; cin>>N; vector<ll> A(N); up(i,0,N,1) cin>>A[i]; ll a = counting(A,N,true); ll b = counting(A,N,false); cout<< (a<b?a:b) <<endl; }
#include <bits/stdc++.h> using namespace std; #define MAX 100000 int n; long long a[MAX]; int main() { cin >> n; for( int i = 0; i < n; i++ ) { cin >> a[i]; } long long esum = 0; long long osum = 0; long long eans = 0; long long oans = 0; for( int i = 0; i < n; i++ ) { esum += a[i]; osum += a[i]; if( i % 2 ) { if( osum <= 0 ) { oans += 1 - osum; osum = 1; } if( esum >= 0 ) { eans += 1 + esum; esum = -1; } } else { if( osum >= 0 ) { oans += 1 + osum; osum = -1; } if( esum <= 0 ) { eans += 1 - esum; esum = 1; } } } cout << min( eans, oans ) << endl; return 0; }
#include<iostream> #include<algorithm> using namespace std; int main() { int n; cin >> n; int a[n]; for (int i = 0;i < n;++i)cin >> a[i]; long long sum = 0, ans[2] = {}; for (int j = 0;j < 2;++j) { sum = 0; for (int i = 0;i < n;++i) { if (i % 2 == j) {//+ sum += a[i]; if (sum <= 0) { ans[j] += 1 - sum; sum = 1; } } else {//- sum += a[i]; if (sum >= 0) { ans[j] += 1 + sum; sum = -1; } } } } cout << min(ans[0],ans[1]) << endl; }
#include <iostream> #include <algorithm> using namespace std; typedef long long ll; int main(void) { int n; cin >> n; ll sum1 = 0, sum2 = 0, ans1 = 0, ans2 = 0; for (int i = 0; i < n; i++) { int a; cin >> a; sum1 += a; sum2 += a; if (i % 2 == 0) { if (sum1 <= 0) { ans1 += (1 - sum1); sum1 = 1; } if (sum2 >= 0) { ans2 += (sum2 + 1); sum2 = -1; } } else { if (sum2 <= 0) { ans2 += (1 - sum2); sum2 = 1; } if (sum1 >= 0) { ans1 += (sum1 + 1); sum1 = -1; } } } cout << min(ans1, ans2) << endl; return 0; }
#include <bits/stdc++.h> using namespace std; int main(){ int n; cin >> n; vector<long> a(n); for (int i=0; i<n; i++) cin >> a[i]; long odd = 0, even = 0, sum = 0; for (int i=0; i<n; i++){ sum += a[i]; if(i%2==0&&sum<=0){ odd += abs(sum)+1; sum = +1; } else if(i%2==1&&sum>=0){ odd += abs(sum)+1; sum = -1; } } sum = 0; for (int i=0; i<n; i++){ sum += a[i]; if (i%2==1&&sum<=0){ even += abs(sum)+1; sum = +1; } else if(i%2==0&&sum>=0){ even+=abs(sum)+1; sum=-1; } } cout << min(odd,even) << endl; }
#include<bits/stdc++.h> #define REP(i,n) for(int i=0;i<(n);i++) #define ALL(v) (v).begin(),(v).end() #define int long long using namespace std; typedef vector<int> vint; typedef pair<int,int> pint; int N,a[100005]; int solve(){ int res=0,sum=0; REP(i,N){ sum+=a[i]; if(i%2==0 and sum<=0){ res+=1-sum; sum=1; } if(i%2==1 and sum>=0){ res+=sum+1; sum=-1; } } return res; } signed main() { cin>>N; REP(i,N) cin>>a[i]; int ans=solve(); REP(i,N) a[i]*=-1; ans=min(ans,solve()); cout<<ans<<endl; }
#include <iostream> #include <algorithm> int n; long long a[100005]; int main(){ std::cin>>n; for(int i=0;i<n;++i) std::cin>>a[i]; long long ans1=0; long long sum=0; for(int i=0;i<n;++i){ sum+=a[i]; if(i%2==0){ if(sum>=0){ ans1+=sum+1; sum=-1; } } else if(sum<=0){ ans1+=1-sum; sum=1; } } long long ans2=0; sum=0; for(int i=0;i<n;++i){ sum+=a[i]; if(i%2==0){ if(sum<=0){ ans2+=1-sum; sum=1; } } else if(sum>=0){ ans2+=sum+1; sum=-1; } } std::cout<<std::min(ans1,ans2)<<std::endl; return 0; }
#include <iostream> #include <cmath> #include <algorithm> using namespace std; int main() { int n; cin >> n; long long int a[n]; long long int ans[2] = {0}; for (int i=0; i<n; ++i) cin >> a[i]; for (int i=0; i<2; ++i) { int sign; long long int suma = 0; if (i==0) sign = 1; else sign = -1; for (int j=0; j<n; ++j) { suma += a[j]; if (suma * sign <= 0) { ans[i] += abs(suma - sign); suma = sign; } sign *= -1; } } cout << min(ans[0], ans[1]) << endl; return 0; }
//Sequence.cpp (C) #include <iostream> using namespace std; long long ans(int n, int*, int change); int main(){ int n; int a[110000]; cin >> n; for(int i = 0; i < n; i++) cin >> a[i]; long long pAns,nAns; pAns = ans(n,a,1); nAns = ans(n,a,-1); printf("%lld\n",min(pAns,nAns)); } long long ans(int n, int *a, int change){ long long Ans = 0; long long sum = 0; for(int i = 0; i < n; i++){ sum += a[i]; switch (change) { case -1: if(sum > -1) Ans += 1 + sum, sum = -1; change *= -1; break; case 1: if(sum < 1) Ans += 1 - sum, sum = 1; change *= -1; break; } } return Ans; }
#include<bits/stdc++.h> using namespace std; typedef long long ll; ll N; vector<ll> a; ll calc(bool sig){ ll ans = 0LL; ll sum = 0LL; for(ll i = 0; i < N; i++){ if(sig ^ (i%2)){ if(sum + a[i] <= 0){ ans += 1 - (sum + a[i]); sum = 1; }else{ sum += a[i]; } }else{ if(sum + a[i] >= 0){ ans += 1 + (sum + a[i]); sum = -1; }else{ sum += a[i]; } } } return ans; } int main(){ cin >> N; a.resize(N); for(ll i = 0; i < N; i++){ cin >> a[i]; } cout << min(calc(1), calc(0)); }
#define _USE_MATH_DEFINES #include <bits/stdc++.h> using namespace std; signed main() { ios::sync_with_stdio(false); cin.tie(0); int n; cin >> n; long long ans[2] = {}; long long sum[2] = {}; for (int i = 0; i < n; i++) { int x; cin >> x; for (int j = 0; j < 2; j++) { sum[j] += x; if (j % 2 == i % 2) { if (sum[j] <= 0) { ans[j] += 1 + abs(sum[j]); sum[j] = 1; } } else { if (sum[j] >= 0) { ans[j] += 1 + abs(sum[j]); sum[j] = -1; } } } } cout << min(ans[0], ans[1]) << endl; return 0; }
#include <bits/stdc++.h> using namespace std; int main() { int N; int64_t A=0,B=0; cin>>N; vector<int> p(N); for(int i=0;i<N;i++){ cin>>p.at(i); } int Z=0; for(int i=0;i<N;i++){ Z+=p.at(i); if(i%2==0){ if(Z>=0){ A+=1+Z; Z=-1; } } else{ if(Z<=0){ A+=1-Z; Z=1; } } } Z=0; for(int i=0;i<N;i++){ Z+=p.at(i); if(i%2==1){ if(Z>=0){ B+=1+Z; Z=-1; } } else{ if(Z<=0){ B+=1-Z; Z=1; } } } cout<<min(A,B)<<endl; }
#include <bits/stdc++.h> #define rep(i,n) for(int i=0;i<(n);i++) using namespace std; typedef long long ll; typedef pair<int,int> P; int main(){ int n; cin>>n; ll a[100005]; rep(i,n) cin>>a[i]; ll sum=0; ll a1=0,a2=0; rep(i,n){ sum+=a[i]; if(i&1){ if(sum>=0){ a1+=sum+1; sum=-1; } } else{ if(sum<=0){ a1+=1-sum; sum=1; } } } sum=0; rep(i,n){ sum+=a[i]; if(!(i&1)){ if(sum>=0){ a2+=sum+1; sum=-1; } } else{ if(sum<=0){ a2+=1-sum; sum=1; } } } cout<<min(a1,a2)<<endl; return 0; }
#include <bits/stdc++.h> #define ll long long using namespace std; int main(){ int n; cin>>n; ll ans=0,vec[n]; for(int i=0;i<n;i++){ cin>>vec[i]; } ll sum=0,sumb=0; for(int i=0;i<n;i++){ sum+=vec[i]; if(i%2==0){ if(sum<1){ sumb+=1-sum; sum=1; } } if(i%2==1){ if(sum>-1){ sumb+=sum+1; sum=-1; } } } ans=sumb; sumb=0; sum=0; for(int i=0;i<n;i++){ sum+=vec[i]; if(i%2==0){ if(sum>-1){ sumb+=sum+1; sum=-1; } } if(i%2==1){ if(sum<1){ sumb+=1-sum; sum=1; } } } cout<<min(ans,sumb)<<endl; }
#include<bits/stdc++.h> using namespace std; int main() { int n; cin >> n; vector<int> a; for (int i = 0; i < n; i++) { int t; cin >> t; a.push_back(t); } long long s1 = 0, s2 = 0, c1 = 0, c2 = 0; for (int i = 0; i < n; i++) { s1 += a[i]; s2 += a[i]; if (i % 2 == 0 && s1 <= 0) { c1 += abs(1 - s1); s1 = 1; } else if (i % 2 == 1 && s1 >= 0) { c1 += abs(-1 - s1); s1 = -1; } if(i % 2 == 0 && s2 >= 0){ c2 += abs(-1 - s2); s2 = -1; } else if (i % 2 == 1 && s2 <= 0) { c2 += abs(1 - s2); s2 = 1; } } cout << min(c1, c2) << endl; return 0; }
#include <iostream> #include <string.h> #include <algorithm> #include <vector> #include <queue> using namespace std; typedef long long ll; const ll INF=100000000000000LL; ll a[100001]; ll r[2]={}; int main() { int n; cin>>n; ll t1=0; ll t2=0; ll s1=0; ll s2=0; ll a1; for(int i=0;i<n;++i){ cin>>a1; t1+=a1; t2+=a1; if(i%2==0){ if(t1<=0){ s1+=-t1+1; t1=1; } if(t2>=0){ s2+=t2+1; t2=-1; } }else{ if(t1>=0){ s1+=t1+1; t1=-1; } if(t2<=0){ s2+=-t2+1; t2=1; } } } cout<<min(s1,s2)<<endl; return 0; }
#include<iostream> #include<string> #include<algorithm> #include<vector> using ll = long long; using namespace std; ll n; vector<ll> a; ll solve(int x); int main(){ cin >> n; for(ll i=0;i<n;i++){ int x; cin >> x; a.push_back(x); } cout << min(solve(0),solve(1)) << endl; return 0; } ll solve(int x){ ll ans = 0; ll now = 0; for(ll i=0;i<n;i++){ now += a[i]; if((i%2^x)&&(now>=0)){ ans += now + 1; now = -1; } if(!(i%2^x)&&(now<=0)){ ans -= now - 1; now = 1; } } return ans; }
#include <bits/stdc++.h> using namespace std; using ll = long long; int main() { cin.tie(0); ios::sync_with_stdio(false); int N; cin >> N; vector<int> a(N); for (int i = 0; i < N; ++i) cin >> a[i]; ll cnt = 0; ll sum = 0; for (int i = 0; i < N; ++i) { ll t = sum + a[i]; if (i % 2 == 0 && t <= 0) cnt += 1 - t, t = 1; if (i % 2 == 1 && t >= 0) cnt += t + 1, t = -1; sum = t; } ll ans = cnt; cnt = sum = 0; for (int i = 0; i < N; ++i) { ll t = sum + a[i]; if (i % 2 == 1 && t <= 0) cnt += 1 - t, t = 1; if (i % 2 == 0 && t >= 0) cnt += t + 1, t = -1; sum = t; } ans = min(ans, cnt); cout << ans << endl; }
#include <bits/stdc++.h> using namespace std; typedef long long ll; int main() { int n; cin>>n; vector<ll> a(n); for (int i=0; i<n; i++) cin>>a[i]; vector<ll> ret(2); for (int c=0; c<2; ++c){ int sgn=c?1:-1; for (ll s=0, t=0; t<n; t++, sgn*=-1) { s+=a[t]; if(sgn*s<=0) ret[c]+=abs(s)+1, s=sgn; } } cout<<min(ret[0],ret[1])<<"\n"; return 0; }
#include <bits/stdc++.h> using namespace std; int main() { ios::sync_with_stdio(false); cin.tie(0); int n; cin >> n; vector<int> a(n); for (int i = 0; i < n; i++) cin >> a[i]; long long c1 = 0, c2 = 0, s1 = 0, s2 = 0; for (int i = 0; i < n; i++) { s1 += a[i]; s2 += a[i]; if (i & 1) { if (s1 >= 0) {c1 += s1 + 1; s1 = -1;} if (s2 <= 0) {c2 += 1 - s2; s2 = 1;} } else { if (s1 <= 0) {c1 += 1 - s1; s1 = 1;} if (s2 >= 0) {c2 += s2 + 1; s2 = -1;} } } cout << min(c1, c2) << '\n'; return 0; }
#include <bits/stdc++.h> using namespace std; int main() { long n,ansa=0,ansb=0,x=0,y=0; cin >> n; vector<long> a(n),wa(n); for(long i=0;i<n;i++) cin >> a[i]; wa[0]=a[0]; for(long i=1;i<n;i++) wa[i]=wa[i-1]+a[i]; for(long i=0;i<n;i++) { if(i%2==0) { if(wa[i]+x<=0) { ansa+=1-wa[i]-x; x+=1-wa[i]-x; } if(wa[i]+y>=0) { ansb+=1+wa[i]+y; y+=-1-wa[i]-y; } } else { if(wa[i]+x>=0) { ansa+=1+wa[i]+x; x+=-1-wa[i]-x; } if(wa[i]+y<=0) { ansb+=1-wa[i]-y; y+=1-wa[i]-y; } } } cout << min(ansa,ansb) << endl; }
#include<bits/stdc++.h> using namespace std; int main() { int n; cin>>n; vector<int> v(n); for(auto &i:v) cin>>i; long long ansq=1e17; for(int x=0;x<2;x++) { int h=x; long long int sum=0,ans=0; for(int i=0;i<n;i++) { sum+=v[i]; if(h) { if(sum<=0) { ans+= abs(1-sum); sum=1;} } else { if(sum>=0) { ans+=abs(sum+1); sum=-1; } } h = h^1; } ansq=min(ansq,ans); } cout<<ansq<<"\n"; return 0; }
#include <bits/stdc++.h> #define rep(i,n) for (int i = 0; i < (n); ++i) using namespace std; typedef long long ll; ll s1, s2, c1, c2; int main() { ll n; cin>>n; rep(i,n){ int a; cin>>a; s1 += a; s2 += a; if (i % 2) { if (s1 <= 0) c1 += 1 - s1,s1 = 1; if (s2 >= 0) c2 += 1 + s2,s2 = -1; } else { if (s1 >= 0) c1 += 1 + s1,s1 = -1; if (s2 <= 0) c2 += 1 - s2,s2 = 1; } } cout << min(c1, c2) << endl; return 0; }
#include <bits/stdc++.h> using namespace std; int main() { int n; cin >> n; vector<long long> a(n); for (auto&& ai : a) cin >> ai; long long r1 = 0, r2 = 0; long long sum = 0; for (int i = 0; i < n; i++) { sum += a[i]; if (i%2 == 0 && sum <= 0) { r1 += 1 - sum; sum = 1; } else if (i%2 == 1 && sum >= 0) { r1 += sum + 1; sum = -1; } } sum = 0; for (int i = 0; i < n; i++) { sum += a[i]; if (i%2 == 0 && sum >= 0) { r2 += sum + 1; sum = -1; } else if (i%2 == 1 && sum <= 0) { r2 += 1 - sum; sum = 1; } } cout << min(r1, r2) << endl; return 0; }
// C - Sequence #include <bits/stdc++.h> using namespace std; using ll = long long; int N; vector<ll> A(100000); ll counter(int sign){//sign: (+)start -> 1, (-)start -> -1 ll c = 0; for(ll s=0, i=0; i<N; ++i, sign*=-1){ s += A[i]; if(sign*s<=0){ c += abs(s) + 1; s = sign; } } return c; } int main(){ cin>>N; for(int i=0; i<N; ++i) cin>>A[i]; ll a = counter(1), b = counter(-1); cout<< (a<b?a:b) <<endl; }
#include <bits/stdc++.h> using namespace std; typedef long long ll; int main(){ ll n; cin>>n; ll a[n]; for(int i=0;i<n;i++) cin>>a[i]; ll c1=0,c2=0,sum=0; for(int i=0;i<n;i++){ if(i%2==0){ sum=sum+a[i]; if(sum<0) continue; c1+=abs(-1-sum); sum=-1; } else{ sum=sum+a[i]; if(sum>0) continue; c1+=abs(1-sum); sum=1; } } sum=0; for(int i=0;i<n;i++){ if(i%2==1){ sum=sum+a[i]; if(sum<0) continue; c2+=abs(-1-sum); sum=-1; } else{ sum=sum+a[i]; if(sum>0) continue; c2+=abs(1-sum); sum=1; } } cout<<min(c1,c2)<<endl; return 0; }
#include <iostream> #include <vector> #include <algorithm> using namespace std; int main(){ int N; cin>>N; vector<long long> a(N); for(int i=0;i<N;i++) cin>>a[i]; int initial_sign[2]={-1,1}; vector<long long> res(2); for(int i=0;i<2;i++){ long long cumsum=0; long long current_sign=initial_sign[i]; for(int j=0;j<N;j++){ cumsum+=a[j]; if(cumsum*current_sign<=0){ res[i]+=abs(cumsum-current_sign); cumsum=current_sign; } current_sign=-1*current_sign; } } cout << min(res[0],res[1]); return 0; }
#include<iostream> #include<vector> using namespace std; int main(){ int n; cin >> n; vector<long long> a(n+1,0); for(int i=1;i<=n;i++){ cin >> a[i]; a[i]+=a[i-1]; } long long ans=1LL<<50; for(int k=-1;k<=1;k+=2){ int sign=k; long long plus=0,minus=0; for(int i=1;i<=n;i++){ if(a[i]+plus-minus>0){ if(sign==-1) minus+=a[i]+plus-minus+1; }else if(a[i]+plus-minus<0){ if(sign==1) plus+=-(a[i]+plus-minus)+1; }else{ if(sign==-1) minus+=1; else if(sign==1) plus+=1; } sign*=-1; } if(ans>plus+minus) ans=plus+minus; } cout << ans << endl; }
#include <bits/stdc++.h> using namespace std; typedef long long ll; int main() { int n; cin >> n; vector<ll> a(n); for (int i = 0; i < n; i++) cin >> a[i]; ll ans1 = 0, ans2 = 0; ll S = 0; for (int i = 0; i < n; i++) { S += a[i]; if (i % 2 == 0 && S <= 0) { ans1 += 1 - S; S = 1ll; } else if (i % 2 == 1 && S >= 0) { ans1 += S + 1; S = -1ll; } } S = 0; for (int i = 0; i < n; i++) { S += a[i]; if (i % 2 == 1 && S <= 0) { ans2 += 1 - S; S = 1ll; } else if (i % 2 == 0 && S >= 0) { ans2 += S + 1; S = -1ll; } } cout << min(ans1, ans2) << endl; }