Large.h

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#pragma once
 
#include <string>
#include <vector>
#include <algorithm>
#include <sstream>
 
class large {
public:
    large();
    large(std::string str);
    large(long long value);
    large& operator+=(const large& value);
    large& operator-=(const large& value);
    large& operator*=(const large& value);
    large& operator/=(const large& value);
    large& operator%=(const large& value);
    large operator++(::int32_t d);
    large operator--(::int32_t d);
    large& operator++();
    large& operator--();
    large operator-();
    bool operator== (large val);
    bool operator!= (large val);
    bool operator<= (large val);
    bool operator>= (large val);
    bool operator> (large val);
    bool operator< (large val);
    large operator+ (large val);
    large operator- (large val);
    large operator* (large val);
    large operator/ (long long val);
    large operator/ (large val);
    large operator% (large val);
    std::string ToString();
private:
    enum Sign { Plus, Minus };
 
    std::string num;
    Sign sign;
 
    std::string GetNum();
    large pow(large val);
};