Basic template

#include <bits/stdc++.h>
#include <fstream>
using namespace std;
typedef long long ll;
typedef long double ld;
#define MOD 1000000007
#define endl "\n";
#define pi 3.14159265
int add(int x, int y){return x+y;}
int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);

    ll t;
    cin>>t;

    while(t--)
 {
    ll a;
    ll f=1;
    cin>>a;
    for(int i=1;i<=a;i++)
    {

        f=f*i;
    }
    cout<<f<<endl;

 }
    return 0;
}