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解题思路:

注意事项:

参考代码:

x=int(input())
for pen4 in range(x//4,-1,-1):#优先买4元的笔，开始循环递减到0结束
    remaining=x-pen4*4 #求剩余的钱
    if(remaining%5==0):
        pen5=remaining//5
        pen6=0
        print(pen6,pen5,pen4)
        break
    elif(remaining%6==0):
        pen6=remaining//6
        pen5=0
        print(pen6,pen5,pen4)
        break