結果
問題 |
No.4 おもりと天秤
|
ユーザー |
![]() |
提出日時 | 2019-03-06 10:33:21 |
言語 | Swift (6.0.3) |
結果 |
AC
|
実行時間 | 11 ms / 5,000 ms |
コード長 | 1,021 bytes |
コンパイル時間 | 1,798 ms |
コンパイル使用メモリ | 185,588 KB |
実行使用メモリ | 15,616 KB |
最終ジャッジ日時 | 2024-11-30 13:42:06 |
合計ジャッジ時間 | 2,830 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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ファイルパターン | 結果 |
---|---|
other | AC * 23 |
ソースコード
import Foundation let n = Int(readLine()!)! let weights = readLine()!.split(separator:" ").map { Int($0)! } var weightSum = 0 var maxWeight = 0 weights.forEach { weight in weightSum += weight maxWeight = Swift.max(weight, maxWeight) } if weightSum % 2 != 0 { print("impossible") exit(0) } let goal = weightSum / 2 if maxWeight > goal { print("impossible") exit(0) } var possibilities = Array<Int>(repeating: -1, count: goal + 1) weights.enumerated().forEach { i, weight in if possibilities[weight] < 0 { possibilities[weight] = i } for j in 1 ..< Swift.min(goal - weight + 1, possibilities.count) { if possibilities[j] < 0 { continue } if possibilities[j] >= i { continue } if possibilities[j + weight] >= 0 { continue } if j + weight == goal { print("possible") exit(0) } possibilities[j + weight] = i } } print("impossible") exit(0)