Sum of ones

#include <bits/stdc++.h>
using namespace std;

int hammingWeight(int n) {
    int sum = 0;
    while (n != 0) {
        sum++;
        n &= (n - 1);
    }
    return sum;
}

int main() {
    cin.tie(0)->sync_with_stdio(0);
    int n;
    cin >> n;
    int dp[n+1];
    dp[0] = 0;
    
    for (int i = 1; i <= n; i++){
        dp[i] = hammingWeight(i) + dp[i-1];
    }
    
    cout << dp[n];

    return 0;
}

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: RUNTIME ERROR

Test 12

Verdict: RUNTIME ERROR

Test 13

Verdict: RUNTIME ERROR

Test 14

Verdict: RUNTIME ERROR

Test 15

Verdict: RUNTIME ERROR

Test 16

Verdict: RUNTIME ERROR

Test 17

Verdict: RUNTIME ERROR

Test 18

Verdict: RUNTIME ERROR

Test 19

Verdict: RUNTIME ERROR

Test 20

Verdict: RUNTIME ERROR

Test 21

Verdict: RUNTIME ERROR