#include <iostream>
using namespace std;
int main(){
  string s;cin>>s;
  int i = 0;
  int a,b;
  int nw = 0;
  while(s[i] != ','){
    nw = nw*10+s[i]-'0';
    i++;
  }
  a = nw;nw = 0;
  i++;
  while(i < s.size()){
    nw = nw*10+s[i]-'0';
    i++;
  }
  b = nw;
  cout << "a + b = " << a+b << endl;
}