def main(input):
    s = input
    a, b, c = map(int, s.split(" "))
    
    
    print(a)
    print(type(a))

    
    if a + b == c:
        print("correct")
    
    else:
        print("incorrect")
        

if __name__ == '__main__':
    input = input()
    main(input)