Submission #6446543

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Source Code Expand

#include <bits/stdc++.h>
using namespace std;

#ifdef DEBUG
#include "../.inc/debug.hpp"
#else
#define debug(...) 42
#define rdfile(...) 42
#endif

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    // rdfile("_input.txt");

    int r;
    cin >> r;

    cout << 3*r*r << endl;

    return 0;
}

Submission Info

Judge Result