python-百钱买白鸡

经典题目：有100文钱，要买100只鸡，公鸡5文一只，母鸡3文一只，小鸡三只一文，问公鸡母鸡小鸡各多少只？

 

#/usr/bin/python
#-*-encoding:utf-8-*-

# x + y + z = 100
# 5x + 3y + z/3 = 100
for x in range(1, 20):
    for y in range(1, 33):
        z = 100 - y - x
        if z % 3 == 0 and 5 * x + 3 * y + z / 3 == 100:
            print '公鸡：', x, '只', '母鸡：', y, '只', '小鸡：', z, '只'