@[Boliboli](/user/981612)
```cpp
#include <iostream>
using namespace std;
void f(string s)
{
if (s[0] == '-')
{
cout << '-';
bool flag = false;
for (int i = s.length() - 1;i >= 1;i--)
{
if (s[i] != '0') flag = true;
if (flag) cout << s[i];
}
cout << endl;
}
else
{
bool flag = false;
for (int i = s.length() - 1;i >= 0;i--)
{
if (s[i] != '0') flag = true;
if (flag) cout << s[i];
}
cout << endl;
}
}
int main()
{
string num;
cin >> num;
if (num == "0") cout << 0 << endl;
else f(num);
return 0;
}
```
by codejiahui @ 2023-04-30 14:11:04
最后一个点是0（起码我加了特判后过了）
by 没见过AC @ 2023-05-01 20:28:44
@[codejiahui](/user/512407) 读假题了，谢谢大佬
by Boliboli @ 2023-05-03 11:15:05