Submission

Score: 100

User: pitt

Problemset: เลขหลักของผลคูณ

Language: cpp

Time: 0.004 second

Submitted On: 2026-10-12 12:28:59

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

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int a,b,c,sum;
    cin >> a >> b >> c;
    sum = a*b;
    int tmpsum = sum,count = 0;
    while(tmpsum > 0){
        tmpsum /= 10;
        count++;
    }

    if(count - c < 0){
        cout << "_";
        return 0;
    }
    cout << (int)(sum/(pow(10,count - c))) % 10;
}