终于3ac了。妈的

#include <iostream>
#include <stdio.h>
using namespace std;
const int maxn = 1e+5 + 10;
int a[maxn];


int main()
{
    int n;
    while(~scanf("%d", &n)){
        for(int i = 0 ; i < n; ++i){
            int val ;
            scanf("%d", &val);
            if(i >= 1){
                a[i] = a[i-1] + val;
            }else {
                a[i] = val;
            }
        }
        int q;
        scanf("%d", &q);
        for(int i = 0 ; i  < q ; ++i) {
            int val;
            scanf("%d", &val);
            int f = 0;
            int e = n;
            int mid ;
            int ans = 0;
            while(f < e){
                mid = (f+e)/2;
                if(a[mid] > val){
                    e = mid;
                }
                else if(a[mid] == val){
                    break;
                }
                else {
                    f = mid+1;
                }
            }
            if(a[mid] == val){
                ans = mid;
            }
            else if(a[mid] < val){
                ans = mid+1;
            }
            else {
                ans = mid;
            }
            printf("%d\n", ans+1);
        }

    }
    return 0;
}