python_乘法表及百文买百鸡

问题：公鸡5文钱一只，母鸡3文钱一只，小鸡3只一文钱，用100文钱买100只鸡,其中公鸡，母鸡，小鸡都必须要有，问公鸡，母鸡，小鸡要买多少只刚好凑足100文钱？

for x in range(0,100//5):
    for y in range(0,100//3):
        for z in range(0,100):
            if x + y + z ==100 and x*5+y*3+z/3 == 100:
                print("公鸡:%s母鸡:%s小鸡:%s"%(x,y,z))

 九九乘法表

for i in range(1,10):
     string = ""
     for c in range(1,i+1):
         string += str(i) + "*" + str(c) + "=" + str(i * c) + "\t"
     print(string)
#第二种写法
for i in range(1,10):
     for c in range(1,i+1):
         print(str(i) + "*" + str(c) + "=" + str(i * c) + "\t",end="")
     print("\n",end=""