faktorijeli

#include<cstdio>

int main(){
    int x, i = 0;
    scanf("%d", &x);

    while(getchar() == '!'){
        i++;
    }

    long fact = 1;

    for(int b = x; (b >= x % i) && (b > 0); b -= i){
        fact *= b;
    }

    printf("%ld", fact);
}