#include <iostream>
#include <fstream>

using namespace std;

ifstream fin("fact.in");
ofstream fout("fact.out");

unsigned int factorial(int N) {
    if (N == 0)
        return 1;
    return N * factorial(N-1);
}

int main()
{
    int A, B, C;
    fin >> A;
    fin >> B;
    fin >> C;
    fout << factorial(A) << endl;
    fout << factorial(B) << endl;
    fout << factorial(C) << endl;
    return 0;
}