#include <iostream>
using namespace std;

int main() {
    int n=50;
    int sum=0;

    for(int i=1;i<=n;i++){ //1+2+3+4+5=15
        sum+=i;
        if(i==5){
            break;
        }
        
    }
    cout << "sum = " << sum << endl;
    return 0;
}