#include <iostream>
using namespace std;

int main()
{
    int a,b;
    while(cin >> a >> b)
        cout << a+b << endl;
}

#include <stdio.h>

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

program p1001(Input,Output); 
var 
  a,b:Integer; 
begin 
   while not eof(Input) do 
     begin 
       Readln(a,b); 
       Writeln(a+b); 
     end; 
end.

import java.util.Scanner;

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

• main must be declared as int, void main will end up with a Compile Error.
  
• i is out of definition after block "for(int i=0...){...}"
  
• itoa is not an ANSI function.
  
• __int64 of VC is not ANSI, but you can use long long for 64-bit integer.
  

Queuing : The judge is so busy that it can't judge your submit at the moment, usualy you just need to wait a minute and your submit will be judged.

Accepted : OK! Your program is correct!.

Presentation Error : Your output format is not exactly the same as the judge's output, although your answer to the problem is correct. Check your output for spaces, blank lines,etc against the problem output specification.

Wrong Answer : Correct solution not reached for the inputs. The inputs and outputs that we use to test the programs are not public (it is recomendable to get accustomed to a true contest dynamic ;-).

Time Limit Exceeded : Your program tried to run during too much time.

Memory Limit Exceeded : Your program tried to use more memory than the judge default settings.

Output Limit Exceeded: Your program tried to write too much information. This usually occurs if it goes into a infinite loop. Currently the output limit is 1M bytes.

Compile Error : The compiler (gcc, g++, fpc, etc) could not compile your program. Of course, warning messages are not error messages. Click the link at the judge reply to see the actual error message.

Out Of Contest Time: this message can only appear during a contest, if a program is submitted out of contest time.

No such problem: Either you have submitted a wrong problem id or the problem is unavailable.

Segmentation Fault : The possible cases of your encountering this error are:

• 1.buffer overflow --- usually caused by a pointer reference out of range.
  
• 2.stack overflow --- please keep in mind that the default stack size is 8192K.