#include <iostream>
#include <cstdio>
#include <cstring>

using namespace std;
char s[10007] ; 
char op[10007] ;
int v[10007];
int main()
{
    freopen ("abwords.in" , "r" , stdin ) ;
    freopen ("abwords.out" , "w" , stdout ) ;
    scanf ("%s\n" , s ) ;
    scanf ("%s" , op ) ;
    int l=strlen (op);
    for ( int i = 0 ; i < l ; ++i )
          v[i+1]=op[i];
    printf ("NO\n");
    return 0;
}
