nktrio

#include <iostream>
#include <string>
#include <bitset>

int n;
using namespace std;

int main()
{
    std::cin >> n;
    int a[1005][1005];
    bitset<1005> b[1005];

    for (int i = 1; i <= n; i++)
    {
        for (int j = 1; j <= n; j++)
        {
            std::cin >> a[i][j];
             if (a[i][j] == 1)
            {
                b[i].set(j);
            }
        }
    }

    for (int i = 1; i <= n; i++)
    {
        for (int j = 1; j <= n; j++)
        {
            if (a[i][j] == 0)
            {
                continue;
            }
            bitset<1005> tmp = b[i] ^ b[j];
            tmp.set(i,0);
            tmp.set(j,0);
            if (tmp.count() == 0)
            {
                continue;
            }
            
            for (int k = 1; k <= n; k++)
            {
                if (b[j][k] == 1 && b[k][i] == 1)
                {
                    std::cout << i << ' ' << j << ' ' << k << endl;
                    return 0;
                }
            }
        }
    }
    std::cout << -1 << " " << -1 << " " << -1;
    return 0;
}