问题：公鸡一只5元，母鸡一只3元，小鸡三只1元，问100元可以买多少只鸡？

using System;namespace ConsoleApplication1
{class Program{static void Main(string[] args){int z, i=0;for (int x = 0; x < 20; x++)for (int y = 0; y < 33; y++){z = 100 - x - y;if (5 * x + 3 * y + z / 3 == 100 && z % 3 == 0)Console.WriteLine("{0}.公鸡：{1}"+'\t'+"母鸡：{2}"+'\t'+"小鸡:{3}",++i,x,y,z);}Console.ReadLine();}}
}