Submission

Status:

PPPPPPPPPPPPPPPPPPPP

Score: 100

User: testsexhoadammar

Problemset: ผลบวก (ง่าย)

Language: cpp

Time: 0.158 second

Submitted On: 2024-10-31 19:59:41

#include "bits/stdc++.h"

using namespace std;

int main()
{
    int n, x, y;
    cin >> n;
    vector<int> num(n);
    vector<int> prefix(n);
    cin >> num[0];
    prefix[0] = num[0];

    for(int i = 1; i < n; i++)
    {
        cin >> num[i];
        prefix[i] = num[i] + prefix[i-1];
    }

    cin >> x >> y;

    cout << prefix[y] - prefix[x-1];
}