AC_simulation_n.cpp

/*
*  Author:      illuz <iilluzen[at]gmail.com>
*  File:        AC_simulation_n.cpp
*  Create Date: 2014-12-20 10:43:06
*  Descripton:  simulation 
*/

#include <bits/stdc++.h>

using namespace std;
const int N = 0;

class Solution {
private:
    // get number from ver[pos] into num
    void getNum(const string &version, int &len, int &pos, int &num) {
        num = 0;
        while (pos < len && version[pos] != '.') {
            num = num * 10 + version[pos] - '0';
            pos++;
        }
        pos++;
    }

public:
    int compareVersion(string version1, string version2) {
        int len1 = version1.length();
        int len2 = version2.length();
        int curPos1 = 0, curPos2 = 0;
        int num1, num2;
        while (curPos1 < len1 || curPos2 < len2) {
            getNum(version1, len1, curPos1, num1);
            getNum(version2, len2, curPos2, num2);
            if (num1 > num2)
                return 1;
            if (num1 < num2)
                return -1;
        }
        return 0;
    }
};

int main() {
    string a, b;
    Solution s;
    while (cin >> a >> b)
        cout << s.compareVersion(a, b) << endl;
    return 0;
}