#include<stdio.h>
int main()
{
int n;
long long factorial = 1;
if(scanf("%d", &n)!= 1)
return 0;
if(n < 0) {
    printf("Invalid Input");
    return 0;
}
else { 
    for (int i = 1; i <= n;i++) {
    factorial *=i;
    }
    printf("11%d", factorial);
}
return 0;
}