51Nod 1344 走格子 模拟

注意long long

#include<iostream>  #include<cstdio>  #include<cstring>  #include<stack>  #include<algorithm>  #include<queue>  #include<vector>#include<cmath>using namespace std;int main(){int n;cin>>n;long long sum=0;long long out=0;for(int i=0;i<n;i++){long long num;scanf("%lld",&num);if(sum+num<0){out+=abs(sum+num);sum=0;}else sum+=num;}cout<<out;return 0;}