Problem:
A + B Problem

Compute A + B.

Input

The input will consist of a series of pairs of integers A and B separated by a space, one pair of integers per line. The input will be terminated by EOF.

Output

For each pair of input integers A and B, you must output the sum of A and B in one line.

Constraints

-1000 ≤ A, B ≤ 1000

Sample Input

1 2
10 5
100 20

Output for the Sample Input

3
15
120

Sample Program

#include<stdio.h>

int main(){
int a, b;
while( scanf("%d %d", &a, &b) != EOF ){
printf("%d\n", a + b);
}
return 0;
}

Solution in Scala (judge verdict: Accepted)

object Main extends App {
  import scala.annotation.tailrec

  @tailrec
  def loop() {
    val line = scala.io.StdIn.readLine()
    if (line == null) return
    else {
      val n = line.split(' ').map(_.toInt).sum
      println(n)
      loop()
    }
  }

  loop()
}