求赞qwq:https://vijos.org/p/1040/solution

#include <bits/stdc++.h>
#define _ int
#define __ bool
#define ___ string
#define ____ main
#define _____ std
#define ______ cin
#define _______ cout
#define ________ if
#define _________ for
#define __________ while
#define ___________ 0
#define ____________ 1
#define _____________ substr
#define ______________ size
#define _______________ break
#define _____________________ vector
#define ______________________________ 10

//______________________________
_ ____() {
    _____::___ ________________, _________________;
    _____::______ >> ________________ >> _________________;
    __ __________________ = ___________;
    ________ (________________[___________] == '-') {
        __________________ = !__________________;
        ________________ = ________________._____________(____________);
    }
    ________ (_________________[___________] == '-') {
        __________________ = !__________________;
        _________________ = _________________._____________(____________);
    }
    _ ___________________ = ________________.______________(), ____________________ = _________________.______________();
    _____::_____________________<_> _________________________(___________________ + ____________),
          __________________________(____________________ + ____________),
          ___________________________(___________________ + ____________________ + ____________, ___________);
    _________ (_ ____________________________ = ___________; ____________________________ < ___________________;
               ____________________________++)
    _________________________[___________________ - ____________________________] =
        ________________[____________________________] - '0';
    _________ (_ ____________________________ = ___________; ____________________________ < ____________________;
               ____________________________++)
    __________________________[____________________ - ____________________________] =
        _________________[____________________________] - '0';
    _________ (_ ____________________________ = ____________; ____________________________ <= ___________________;
               ____________________________++) {
        _ _______________________ = ___________;
        _________ (_ _____________________________ = ____________; _____________________________ <= ____________________;
                   _____________________________++) {
            ___________________________[____________________________ + _____________________________ - ____________] +=
                _________________________[____________________________] * __________________________[_____________________________] +
                _______________________;
            _______________________ = ___________________________[____________________________ + _____________________________ -
                                                                   ____________] / ______________________________;
            ___________________________[____________________________ + _____________________________ - ____________] %=
                ______________________________;
        }
        ___________________________[____________________________ + ____________________] = _______________________;
    }
    _ ______________________ = ___________________ + ____________________;
    __________ (______________________ > ____________ && ___________________________[______________________] == ___________)
    ______________________--;
    __ ________________________ = ____________;
    _________ (_ ____________________________ = ____________; ____________________________ <= ______________________;
               ____________________________++) {
        ________ (___________________________[____________________________] != ___________) {
            ________________________ = ___________;
            _______________;
        }
    }
    ________ (__________________ && !________________________)
    _____::_______ << '-';
    _________ (_ ____________________________ = ______________________; ____________________________ > ___________;
               ____________________________--)
    _____::_______ << ___________________________[____________________________];
}