Submission

Score: 100

User: erng

Problemset: เลขหลักของผลคูณ

Language: cpp

Time: 0.003 second

Submitted On: 2025-10-02 21:30:06

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

int a, b, x, n, s, num;

int main()
{
    cin>>a>>b>>x;;
    n=a*b;
    while (n>0)
    {
        n/=10;
        s++;
    }
    n=a*b;
    if (s<x)
    {
        cout<<"_";
        return 0;
    }
    for (int i=s; i>x-1; i--)
    {
        num=n%10;
        n/=10;
    }
    cout<<num;
}