yovkata 2

#include<iostream>
using namespace std;

int main(){
int n,k, pr=1;
cout << "n: ";
cin >> n;
cout << "k: ";
cin >> k;

for(int i = 0; i<n; i++){
    if(i%k==0 && i > 0){
        pr *= i;
    }
}

cout << pr;

}