using System;
class C1<U> where U : IComparable<int> {
public int Compare( U u, int i ) { return u.CompareTo( i ); }
}
class C2<U> where U : IComparable<U> {
public int Compare( U u1, U u2 ) { return u1.CompareTo( u2 ); }
}
class C3<U,V> where U : IComparable<V> {
public int Compare( U u, V v ) { return u.CompareTo( v ); }
}
class C4<U,V> where U : IComparable<V>, IComparable<int> {
public int Compare( U u, int i ) { return u.CompareTo( i ); }
}