#include<cstdio>
using namespace std;
long long i,j,n,m,a[2001][2001];
int main()
{
    //freopen("window.in","r",stdin);
    //freopen("window.out","w",stdout);
    scanf("%lld",&n);
    for(i=1;i<=n;i++)
        for(j=1;j<=n;j++)
            scanf("%lld",&a[i][j]);
    m=0;
    for(i=2;i<=n-2;i++)
        for(j=2;j<=n-2;j++)
        {
            if((a[i][j]==a[i][j+1]&&a[i+1][j]==a[i+1][j+1])||(a[i][j]==a[i+1][j]&&a[i][j+1]==a[i+1][j+1]))
            {
                printf("2 %lld %lld\n",i,j);
                return 0;
            }
        }
    
    return 0;
}