Bank Account

#include <iostream>

using namespace std;

int n, m;
long long int prefix[10002];
int main() {
    cin >> n >> m;
    for (int i=1; i<=n; i++) {
        long long int val;
        cin >> val;
        prefix[i] = prefix[i-1] + val;
    }
    for (int i=0; i<m; i++) {
        long long int a,b;
        cin >> a >> b;
        cout << prefix[b]-prefix[a-1] << "\n";
    }
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED

Test 11

Verdict: ACCEPTED

Test 12

Verdict: ACCEPTED

Test 13

Verdict: ACCEPTED

Test 14

Verdict: ACCEPTED

Test 15

Verdict: ACCEPTED

Test 16

Verdict: ACCEPTED

Test 17

Verdict: ACCEPTED

Test 18

Verdict: ACCEPTED

Test 19

Verdict: ACCEPTED

Test 20

Verdict: ACCEPTED