Submission

Score: 90

User: Phupa

Problemset: เลขหลักของผลคูณ

Language: cpp

Time: 0.002 second

Submitted On: 2025-10-09 08:27:10

#include <iostream>
using namespace std;

int main() 
{
    long a,b,cal,x,i,j;
    cin>>a>>b>>x;
    cal=a*b;
    for (i=0;cal!=0;i++)
    {
      cal/=10;
    }
    cal=a*b;
    int n=i-x,output;
    if (i-x<=0)
    {
      cout<<"_";
      return 0;
    }
    for (j=0;j<n+1;j++)
    {
      output=cal%10;
      cal/=10;
    }
    cout<<output;
    return 0;
}