He is Offside! (UVALive 3934, HDU 1939, SPOJ OFFSIDE, Regionals 2007 >> Latin America - South America)

///     Raihan Ruhin
///     CSE, Jahangirnagar University.
///     Dhaka-Bangladesh.
///     id: raihanruhin (topcoder / codeforces / codechef / uva / uvalive), 3235 (lightoj)
///     mail: raihanruhin@ (yahoo / gmail / facebook)
///     blog: ruhinraihan.blogspot.com

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

#define SET(a) memset(a,-1,sizeof(a))
#define CLR(a) memset(a,0,sizeof(a))
#define PI acos(-1.0)

#define MOD 1000000007
#define MX 100010


int main()
{
    ios_base::sync_with_stdio(0);cin.tie(0);
    int tc, kk=1, n, m, x, y, a, d, b[15], c[15];
    string s;
    char ch;

    while(cin>>a>>d && a)
    {
        for(int i=0;i<a;i++) cin>>b[i];
        for(int i=0;i<d;i++) cin>>c[i];
        sort(b, b+a);
        sort(c, c+d);
        if(b[0]<c[1]) cout<<"Y\n";
        else cout<<"N\n";
    }
return 0;
}