#include<bits/stdc++.h> using namespace std; int a[1009]; int main(){ int n,x,sum = 0; cin >> n; for(int i = 1;i <= n;i ++){ cin >> a[i]; } cin >> x; for(int i = n;i >= 1;i --){ if(x >= a[i]){ sum ++; x -= a[i]; } else { break; } } cout << sum; }