22.02.17 - 오늘의 PS #137
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22.02.17 - 오늘의 PS #137
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카카오 코테를 봤을때랑 똑같은 결과다. 정확성은 다 맞는데, 효율성이 다 틀린.. 도저히 방법을 모르겠다.
imos 알고리즘을 이용했다. 다차원 누적합이라 생각하면 편하다.
코드의 길이를 줄여봤다. 불필요한 변수가 있는 것 같아서, 좀 더 직관적으로 변경했다.
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