华中科技大学考研机试题 3606. A+B

#include <iostream>
#include <sstream>
using namespace std;

int str2int(string s) {
    int a = 0, minus = 1, i = 0;
    if (s[0] == '-') {
        minus = -1;
        i = 1;
    }
    while (i < s.size()) {
        if (s[i] != ',') {
            a = a * 10 + (s[i] - '0');
        }
        i++;
    }
    return a * minus;
}

int main() {
    string str;
    while (getline(cin, str)) {
        // cout << str << endl;
        stringstream ssin(str);
        string str1, str2;
        ssin >> str1 >> str2;
        // cout << str1 << ' ' << str2int(str1) << endl;
        cout << (str2int(str1) + str2int(str2)) << endl;
    }
    return 0;
}