A + B

import sys

def a_plus_b():
    line = sys.stdin.readline()
    input = line.split()

    if len(input) is not 2:
        sys.stderr.write("Wrong input format.")

    try:
        output = int(input[0]) + int(input[1])
        sys.stdout.write(str(output))
    except ValueError:
        sys.stderr.write("Wrong input format.")

if __name__ == "__main__":
    a_plus_b()

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED