Weird Numbers
문제 정보
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- 문제 ID
- 시간 제한
- 메모리 제한
- 제출 횟수
- 정답 횟수 (비율)
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- WEIRD
- 3000ms
- 65536kb
- 8510
- 1255 (14%)
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- 출처
- 분류
문제
In mathematics, weird numbers are natural numbers that are abundant but not semiperfect. In other words, a natural number N is a weird number if and only if:
- Sum of its proper divisors (i.e. less than N ) is greater than the number.
- No subset of its divisors sum to N.
For example, the set of proper divisors of 12 is { 1, 2, 3, 4, 6 } . The sum of these numbers exceed 12, however, 12 is not a weird number since 1 + 2 + 3 + 6 = 12.
However, 70 is a weird number since its proper divisors are {1, 2, 5, 7, 10, 14, 35} and no subset sums to 70 .
Write a program to determine if the given numbers are weird or not.
입력
In the first line of input, the number of test cases C ( <= 200 ) is given. In each of the following C lines, a natural number N_i is given. All input numbers are greater than 1, and less than or equal to 500,000 .
출력
Output will consist of C lines, each line containing either weird or not weird , denoting the weird-ness of the corresponding input.
예제 입력
2 12 70
예제 출력
not weird weird
노트
