题解 | #函数求差#
函数求差
https://www.nowcoder.com/practice/ad1a6e344add40bdb05c44ce086c1e94
#匿名函数
cal = lambda x,y: x-y
x = eval(input())
y = eval(input())
print(cal(x,y))
print(cal(y,x))
x = eval(input())
y = eval(input())
print(cal(x,y))
print(cal(y,x))
