C :

#include <stdio.h>
int main(){
    int a,b;
    while(scanf("%d %d",&a, &b) != EOF)
        printf("%d\n",a+b);
	return 0;
}

C++ :

#include<iostream>
using namespace std;
int main()
{
  int a,b;
  cin>>a>>b;
  cout<<a+b<<endl;
  return 0;
}

Pascal :

program ab;
  var
    a,b,c:int64;
  begin
    read(a,b);
    c:=a+b;
    writeln(c);
  end.

Java :

import java.util.Scanner;  
public class Main 
{   
  
    public static void main(String[] args) {   
        Scanner scan = new Scanner(System.in);   
        if (scan.hasNext()) {   
            System.out.println(scan.nextInt() + scan.nextInt());   }   
    }   
}

Python :

a, b = raw_input().split()
a = int(a)
b = int(b)
print a+b