荣耀真题
0905没啥好说的
1+2+99-10-10 = 82，模拟这个计算
#include<iostream>
#include <string>
#include<bits/stdc++.h>
using namespace std;
int main(){
string a;
cin >> a;
//long res = 0;
long tmp = 0;
bool flag = true;
for (int i = 0; i < a.size(); i++){
int n = 0;
while (i < a.size() && a[i] != '+' && a[i] != '-'){
n = n * 10 + (a[i] - '0');
i++;
}
if (flag) tmp += n;
else tmp -= n;
if (i < a.size()){
if (a[i] == '+') flag = true;
else flag = false;
}
else{
cout << tmp << endl;
}
}
return 0;
}