Submission

Score: 100

User: purihorharin

Problemset: เลขหลักของผลคูณ

Language: cpp

Time: 0.002 second

Submitted On: 2026-03-20 09:55:43

#include <iostream>
#include <cstdlib>
using namespace std;

int main () {
    cin.tie(nullptr);
    ios_base::sync_with_stdio(false);

    int a, b, x;
    cin >> a >> b >> x;
    a *= b;
    int c=1, i=0;
    while (c < a) c*=10, i++;
    if (i < x) {
        std::cout << '_';
        return 0;
    }
    for (; x < i; x++) a /= 10;
    std::cout << a % 10;
}