#include <iostream>
using namespace std;

int main() {
    cout << "Podaj liczbe do obliczenia silni"
         << endl;

    int n;
    cin >> n;
    int silnia = 1;

    for (int i = 1; i <= n; i++)
        silnia = silnia * i;

    cout << n << "! = " << silnia;
}

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