a+b

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