#include <iostream>
#include <string>
using namespace std;


struct hp{
	string int_part="0",decimal_part="0";
	const int base='0';
	
	//判断变量是否存在小数部分
	bool decimal(){
		if(decimal_part == "0")
			return false;
		else
			return true;
	}
	
	//加法（整数型）
	hp operator + (int addend){
		int p=0,i=int_part.length()-1;
		hp ans;
		ans.int_part = int_part;
		while((addend != 0  ||  p != 0)  &&  i >= 0){
			int head;
			head = addend%10+p+(int_part[i]-base);
			ans.int_part[i] = char(head%10+base);
			addend = addend/10;
			p = head/10;
			i--;
		}
		addend += p;
		while(addend != 0){
			string head;
			head = char(addend%10+base);
			ans.int_part = head+ans.int_part;
			addend = addend/10;
		}
		return ans;
	}
	
	
	//减法（整数型）
	hp operator - (int subtractor){
		int p=0;
		hp ans;
		
	}
	
	
	//乘法（整数型）
	hp operator * (int multiplier){
		int p=0;
		hp ans;
		ans.int_part = int_part;
		for(int i=ans.int_part.length()-1;i>=0;i--){
			int l=ans.int_part[i]-base;
			l = l*multiplier+p;
			ans.int_part[i] = char(l%10+base);
			p = l/10;
		}
		while(p != 0){
			string head;
			head = char(p%10+base);
			ans.int_part = head+ans.int_part;
			p = p/10;
		}
		return ans;
	}
	
	
	
	
};

//
//int main(){
//	hp h;
//	h.int_part="7890123456";
//	h = h+3;
//	cout<<h.int_part;
//	h = h+9;
//	cout<<endl<<h.int_part;
//	h = h;
//	return 0;
//}