A+B

#include<bits/stdc++.h>
using namespace std;
int a[10001],b[10001],c[10001];
int main(){
	string s1,s2;
	cin>>s1>>s2;
	int lena=s1.size(),lenb=s2.size();
	reverse(s1.begin(),s1.end());
	reverse(s2.begin(),s2.end());
	for(int i=0;i<lena;i++){
		a[i]=s1[i]-'0';
	}
	for(int i=0;i<lenb;i++){
		b[i]=s2[i]-'0';
	}
	int lenc=max(lena,lenb);
	for(int i=0;i<lenc;i++){
		c[i]+=a[i]+b[i];
		if(c[i]>=10){
			c[i+1]=c[i]/10;
			c[i]%=10;
		} 
	}
	if(c[lenc]>0) lenc++;
	for(int i=lenc-1;i>=0;i--){
		cout<<c[i];
	}
	return 0;
}