Submission

Score: 100

User: FIrmTInn

Problemset: เลขหลักของผลคูณ

Language: cpp

Time: 0.002 second

Submitted On: 2025-10-11 23:07:05

#include <bits/stdc++.h>
using namespace std;
int main() {
	int a,b,c,p,idx = 0,idx1 = 0;
	cin >> a >> b >> c;
	p = a*b;
	int unit[100],unit2[100];
	for(int i=p;i>0;i/=10){
		unit[idx] = i % 10;
		idx++;
	}
	for(int i=idx-1;i>=0;i--){
		unit2[idx1] = unit[i];
		idx1++;
	}
	if(c <= idx){
		cout << unit2[c-1];
	}
	else{
		cout << "_";
	}
}