Submission #6516838

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Source Code Expand

#include "bits/stdc++.h"
#define rep(i,n) for(int i=0;i<n;i++)
using namespace std;

using ll = long long;

int MOD = 1e9 + 7;

int main() {
    int N;
    cin >> N;
    ll ans = 1;
    rep(i, N) {
        ans *= i + 1;
        ans %= MOD;
    }
    cout << ans << endl;
}

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