using System;

namespace TestProgram
{
    class MyClass
    {
        static void Main ()
        {
            object obj = Animals ( 0, 0 );
            Console.WriteLine ( obj );
        }
        public static object Animals ( int heads, int legs )
        {
            int cows, restOfHeads, cowLegs, chickLegs, chickens;

            if ( ( heads >= 0 & legs >= 0 ) & ( heads <= 1000 & legs <= 1000 )
                & ( legs % 2 == 0 ) & (heads != 0  ^ legs == 0) )
            {
                if ( heads != 0 & legs != 0 )
                {
                    if ( ( ( legs / heads ) <= 4 ) )
                    {
                        if ( legs % 4 == 0 )
                        {
                            cows = legs / 4;
                            restOfHeads = heads - cows;
                            cows -= restOfHeads;
                            cowLegs = cows * 4;
                            chickLegs = legs - cowLegs;
                            chickens = chickLegs / 2;
                        }
                        else
                        {
                            cows = legs / 4;
                            restOfHeads = heads - cows;
                            cows = cows + 1 - restOfHeads;
                            cowLegs = cows * 4;
                            chickLegs = legs - cowLegs;
                            chickens = chickLegs / 2;
                        }
                        return new int [2] { chickens, cows };
                    }
                    else
                    { return "No solutions"; }
                }
                else
                { return new int [2] { 0, 0 }; }
            }
            else
            { return "No solutions"; }
        }
    }
}