class Solution {
public:
    int strToInt(string str) {
        int i = 0;
        while(i < str.size() && str[i] == ' ') i++;

        int flag = 1;
        if(str[i] == '-') flag = -1, i++;
        else if (str[i] == '+') i++;

        long long res = 0;
        while(i < str.size() && str[i] >= '0' && str[i] <= '9')
        {

            res  = res * 10 + str[i] - '0';
            i++;
             cout << "res = " << res << endl;

            if(res > 1e10) break;
        }

        res *= flag;

        // cout << "res = " << res << endl;
        if(res > INT_MAX) return INT_MAX;
        if(res < INT_MIN) return INT_MIN;
        return res;
    }
};