Submission

Score: 50

User: samsenpisardmoo26

Problemset: เลขหลักของผลคูณ

Language: cpp

Time: 0.004 second

Submitted On: 2026-10-06 04:20:40

#include <bits/stdc++.h>
using namespace std;
int main()
{
    int a,b;
    cin >> a >> b;
    long long m = (long long)a*b;
    int n;
    cin >> n;
    
    if(m<pow(10,n-1))
    {
        cout << "_";
        return 0;
    }
    
    long long ans = m/pow(10,n-1);
    cout << ans%10;
}