_______________

#include <bits\stdc++.h>
using namespace std;
#define _____________________ int
#define ______________________ struct
#define _______________________ vector
#define ________________________ void
#define _________________________ return
#define __________________________ assign
#define _____________________________(i, a, b) for (int i = a; i < b; ++i)
#define ______________________________(i, a, b) for (int i = a; i >= b; --i)
#define ________________________________(a) (int)(a.size())
#define _________________________________ if
#define ___________________ 1000000007
#define ____________________ (1 << 12)
#define __________________________________ 0
#define ___________________________________ 1
#define ____________________________________ 2

// ａ  ｅ  ｓ  ｔ  ｈ  ｅ  ｔ  ｉ  ｃ
______________________ _ {
    ______________________ __ { _____________________ __________, ___________; };
    _______________________ <__> _________;
    ________________________ _____(_____________________ ____________) { _________[____________].__________ = _________[____________________________________ * ____________].__________ + _________[____________________________________ * ____________ + ___________________________________].__________; }
    ________________________ ______(_____________________ ____________, _____________________ _____________, _____________________ ______________) { _________[____________].__________ = ______________ * _____________, _________[____________].___________ = _____________; }
    ________________________ _______(_____________________ ____________, _____________________ ______________) {
        _________________________________ (_________[____________].___________ == -___________________) _________________________;
        ______(____________________________________ * ____________, _________[____________].___________, ______________ / ____________________________________), ______(____________________________________ * ____________ + ___________________________________, _________[____________].___________, ______________ / ____________________________________);
        _________[____________].___________ = -___________________;
    }
    ________________________ ________(_______________________ <_____________________> ____________________________) {
        _________.__________________________(____________________________________ * ____________________, {__________________________________, -___________________});
        _____________________________(___________________________, __________________________________, ________________________________(____________________________)) _________[____________________ + ___________________________].__________ = ____________________________[___________________________];
        ______________________________(___________________________, ____________________ - ___________________________________, ___________________________________) _____(___________________________);
    }
    ________________________ ___(_____________________ _______________, _____________________ ________________, _____________________ _____________, _____________________ ____________ = ___________________________________, _____________________ _________________ = __________________________________, _____________________ __________________ = ____________________) {
        _________________________________ (________________ <= _________________ || __________________ <= _______________) _________________________;
        _________________________________ (_______________ <= _________________ && __________________ <= ________________) {
            ______(____________, _____________, __________________ - _________________);
            _________________________;
        }
        _______(____________, __________________ - _________________);
        _____________________ _______________________________ = (_________________ + __________________) / ____________________________________;
        ___(_______________, ________________, _____________, ____________ * ____________________________________, _________________, _______________________________), ___(_______________, ________________, _____________, ____________ * ____________________________________ + ___________________________________, _______________________________, __________________);
        _____(____________);
    }
    _____________________ ____(_____________________ _______________, _____________________ ________________, _____________________ ____________ = ___________________________________, _____________________ _________________ = __________________________________, _____________________ __________________ = ____________________) {
        _________________________________ (________________ <= _________________ || __________________ <= _______________) _________________________ __________________________________;
        _________________________________ (_______________ <= _________________ && __________________ <= ________________) _________________________ _________[____________].__________;
        _______(____________, __________________ - _________________);
        _____________________ _______________________________ = (_________________ + __________________) / ____________________________________;
        _________________________ ____(_______________, ________________, ____________ * ____________________________________, _________________, _______________________________) + ____(_______________, ________________, ____________ * ____________________________________ + ___________________________________, _______________________________, __________________);
    }
};

// ｔ  ｅ  ｓ  ｔ
signed main() {
    _ t;
    vector <int> a = {1, 2, 3};
    t.________(a);
    cout << t.____(0, 3) << endl;
}