Submission

Score: 30

User: solarsunny

Problemset: ผลรวมตัวเลข

Language: cpp

Time: 0.002 second

Submitted On: 2025-09-27 21:08:17

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

int summer(int i, int x, int m) {
    int sum=0;
    for(; i<=x; i++) {
        if(i%m == 0) {
            sum += i;
        }
    }
    return sum;
}


int main() {
    int n,m;
    cin >> n >> m;
    cout << summer(n, m,2)+summer(n, m,3)-summer(n, m,6) << endl;
}