Python应该是被卡了
by 百因必有AC @ 2020-04-05 17:54:06
洛谷IDE，你值得拥有
by 警策看取 @ 2020-04-05 18:00:11
@[百因必有AC](/user/113097) ?
by SSerxhs @ 2020-04-05 18:00:42
@[wuerlang](/user/174157) 看到你的帖子，我现场做了下，顺便表演一波极限压行
```python
def main(op: str, a: int, b: int) -> str: # 返回 last
ans = "%d+%d=%d"%(a, b, a+b) if op == 'a' else\
"%d-%d=%d"%(a, b, a-b) if op == 'b' else\
"%d*%d=%d"%(a, b, a*b) if op == 'c' else\
"Fuck! "
print(ans); print(len(ans))
return op
if __name__ == "__main__":
n = int(input())
for i in range(n):
tmp = input().split()
last = main(last, *map(int, tmp)) if len(tmp) == 2 else\
main(tmp[0], *map(int, tmp[1:]))
```
~~你的问题我马上调查~~
本地正常，ide 上面有奇怪的换行，原因正在调查
by Master_Hash @ 2020-04-05 19:03:58
~~都0202年了还有P党？。。。~~
by btng_smith666 @ 2020-04-05 19:04:57
@[wuerlang](/user/174157) 神秘的换行符是 y 的最后一位，但是这个换行符既不是 \r 也不是 \n，特别奇怪
附上修改后的 AC 代码
```python
# P1957 口算练习题
def myprint(op, x, y):
if op == 'a':
z = int(x) + int(y)
print("{:s}+{:s}={:d}".format(x, y, z)) # print(f"{x}+{y}={z}") # print("%s+%s=%d" %(x, y, z))
elif op == 'b':
z = int(x) - int(y)
print("{:s}-{:s}={:d}".format(x, y, z)) # print("%s-%s=%d" %(x, y, z)) #print(f"{x}-{y}={z}")
elif op == 'c': # else: # op=='c'
z = int(x) * int(y)
print("{:s}*{:s}={:d}".format(x, y, z)) # print("%s*%s=%d" %(x, y, z)) #print(f"{x}*{y}={z}")
print(len(x) + len(y) + 2 + len(str(z)))
n = int(input())
for i in range(1, n+1):
str1 = input()
if 'a' <= str1[0] <= 'c':
op = str1[0]
str1 = str1[2:]
pos = str1.index(' ')
x = str1[:pos]
y = str1[pos+1:]
if not '0' <= y[-1] <= '9':
y = y[:-1]
myprint(op, x, y)
```
by Master_Hash @ 2020-04-05 19:36:58
@[wuerlang](/user/174157) 只加了倒数23行
话说为什么不理我。。。我的压行那么漂亮
by Master_Hash @ 2020-04-05 19:38:05
@[wuerlang](/user/174157) 另外最好不要用字符串处理数字
~~看起来你好像不会用 split，这个 A+B 里面就讲过吧~~
by Master_Hash @ 2020-04-05 19:39:33
@[Master_Hash](/user/306754) 谢谢！
by wuerlang @ 2020-04-05 22:16:52
@[Master_Hash](/user/306754) split()也测试在用，多种方法练习
by wuerlang @ 2020-04-05 22:17:40