#include<bits/stdc++.h>
using namespace std;
int main(){
	int i,n=0,m=0;
	char a[99];
	cin>>a;
	for(i=0;a[i]!='+';i++) n=n*10+int(a[i]-48);
	i++;
	for(;i<strlen(a);i++) m=m*10+int(a[i]-48);
	cout<<n+m;
return 0;}

/**************************************************************
	Problem: 1123
	User: fzy001
	Language: C++
	Result: Wrong Answer
****************************************************************/