Submission

Score: 100

User: CA

Problemset: เลขหลักของผลคูณ

Language: cpp

Time: 0.004 second

Submitted On: 2026-09-21 13:59:40

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

long long A, B, x;

int count(long long n) {
    int i = 1;
    while (n > 0) {
        int cd = n % 10;
        n = (n - cd) / 10;
        i++;
    }
    return i;
}

int main() {
    cin >> A;
    cin >> B;
    cin >> x;
    long long prod = A * B;
    string prods = to_string(prod);
    if (prods.size() < x) {
        cout << "_\n";
        return 0;
    }
    cout << prods[x - 1] << "\n";
    return 0;
}