C :

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

C++ :

#include<iostream>
using namespace std;

int main()
{
	int a, b;
	cin >> a;
	cin >> b;
	cout << a + b;
	getchar();
	getchar();
	return 0;
}

Java :

import java.util.Scanner;

public class Main {

       public static void main(String[] args) {
            Scanner input = new Scanner(System.in);
            int a=input.nextInt();
            int b=input.nextInt();
            System.out.println(a+b);
        }

}