题解 | #百钱买百鸡问题#

• 方程组不求解了，遍历直接算

n = int(input())

# 鸡翁最多20只
for i in range(0, 21):
    # 鸡母最多33只
    for j in range(0, 34):
        # 鸡雏最多300只
        for z in range(0, 301):
            if z % 3 == 0 and 5*i + 3*j + z//3 == 100 and i + j + z == 100:
                print("{} {} {}".format(i, j, z))