|시간 제한||메모리 제한||제출||정답||맞은 사람||정답 비율|
|1 초||512 MB||15||14||12||100.000%|
You are grading an arithmetic quiz. The quiz asks a student for the sum of the numbers. Determine if the student taking the quiz got the question correct.
The first and the only line of input contains a string of the form:
a + b = c
It is guaranteed that a, b, and c are single-digit positive integers. The input line will have exactly 9 characters, formatted exactly as shown, with a single space separating each number and arithmetic operator.
Print, on a single line, YES if the sum is correct; otherwise, print NO.
1 + 2 = 3
2 + 2 = 5