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class MyCalendar {
public:
    MyCalendar() {
        
    }
    
    bool book(int start, int end) {
        rec[start]++;
        rec[end]--;
        int c = 0;
        for(auto &r: rec) {
            //cout << "1 > " << r.first << " - " << r.second << " c: " << c << endl;
            c += r.second;
            //cout << "2 > " << r.first << " - " << r.second << " c: " << c << endl;
            if (c > 1) {
                rec[start]--;
                rec[end]++;
                return false;
            }
        }
        return true;
    }
private:
    map<int, int> rec;
};

/**
 * Your MyCalendar object will be instantiated and called as such:
 * MyCalendar obj = new MyCalendar();
 * bool param_1 = obj.book(start,end);
 */