시간 제한 | 메모리 제한 | 제출 | 정답 | 맞힌 사람 | 정답 비율 |
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1 초 | 512 MB | 3533 | 2733 | 2524 | 78.288% |
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
YES
2 + 2 = 5
NO