Submission

PPPPPPPPPP

Score: 100

User: admin

Problemset: เลขหลักของผลคูณ

Language: cpp

Time: 0.001 second

Submitted On: 2024-10-21 15:36:17

#include <stdio.h>
#define ll long long

int S[200] = {0};
int main() {
	ll A,B,x;
	scanf("%lld%lld%lld", &A, &B, &x);
	
	ll R = A*B;
	int k=0;
	while (R>0) {
		S[k] = R%10;
		k++;
		R/=10;
	}
	
	if (k==0) k = 1;
	if (x >k) printf("_");
	else printf("%d", S[k-x]);
}