Submission

Score: 90

User: thanakorn

Problemset: เลขหลักของผลคูณ

Language: cpp

Time: 0.002 second

Submitted On: 2025-10-12 20:09:17

#include<iostream>
using namespace std;

int main(){
	long long a,b,c,x,d,k[100],i=0;
	cin>>a>>b>>x;
	c=a*b;
	while(c>0){
		d=c%10;
		k[i]=d;
		c=c/10;
		i++;
	}
	if(x>=i){
		cout<<'_';
		return 0;
	}
	cout<<k[i-x];
}