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


struct hp{
	string num;
	int base='0';
	
	
	//ӷͣ
	hp operator + (int x){
		int p=0,i=num.length()-1;
		hp ans;
		ans.num = num;
		while((x != 0  ||  p != 0)  &&  i >= 0){
			int head;
			head = x%10+p+(num[i]-base);
			ans.num[i] = char(head%10+base);
			x = x/10;
			p = head/10;
			i--;
		}
		x += p;
		while(x != 0){
			string head;
			head = char(x%10+base);
			ans.num = head+ans.num;
			x = x/10;
		}
		return ans;
	} 
	
	//˷ 
	hp operator * (int x){
		int p=0;
		hp ans;
		ans.num = num;
		for(int i=ans.num.length()-1;i>=0;i--){
			int l=ans.num[i]-base;
			l = l*x+p;
			ans.num[i] = char(l%10+base);
			p = l/10;
		}
		while(p != 0){
			string head;
			head = char(p%10+base);
			ans.num = head+ans.num;
			p = p/10;
		}
		return ans;
	}
	
	
	
	
};

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