Submission

Score: 0

User: Sunsblad

Problemset: เลขหลักของผลคูณ

Language: cpp

Time: 0.004 second

Submitted On: 2026-09-30 18:51:06

#include<iostream>
#include<stack>
using namespace std;
int main(){
    long long int a,b,x;
    stack<int> l;
    cin>>a>>b>>x;
    a *= b;
    while(a > 0){
        cout<<a%10;
        l.push(a%10);
        a /= 10;
    }
    if(l.empty()){
        cout<<'_';
        return 0;
    }
    for(int i = 0; i<x; i++){
        if(!l.empty()){
            if(i == x-1){
                cout<<l.top();
                return 0;
            }else{
                l.pop();
            }
        }else{
            cout<<'_';
            return 0;
        }

    }

}