#include <bits/stdc++.h>
#define nmax 1025

using namespace std;

ifstream f("cmlsc.in");
ofstream g("cmlsc.out");

int m,n,i,j,a[nmax],b[nmax],v[nmax][nmax],sir[nmax],c;

void Read()
{
    f>>n;
    for(i=1; i<=n; i++)
    f>>v[i];

    for(i=1; i<=n; i++)
    if(v[i]==1)
}

int main()
{
    Read();
    return 0;
}