結果
| 問題 | 
                            No.873 バイナリ、ヤバいなり!w
                             | 
                    
| コンテスト | |
| ユーザー | 
                             qwewe
                         | 
                    
| 提出日時 | 2025-05-14 12:51:39 | 
| 言語 | PyPy3  (7.3.15)  | 
                    
| 結果 | 
                             
                                WA
                                 
                             
                            
                         | 
                    
| 実行時間 | - | 
| コード長 | 1,230 bytes | 
| コンパイル時間 | 261 ms | 
| コンパイル使用メモリ | 82,588 KB | 
| 実行使用メモリ | 83,508 KB | 
| 最終ジャッジ日時 | 2025-05-14 12:52:23 | 
| 合計ジャッジ時間 | 6,940 ms | 
| 
                            ジャッジサーバーID (参考情報)  | 
                        judge4 / judge2 | 
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| ファイルパターン | 結果 | 
|---|---|
| sample | AC * 3 | 
| other | AC * 16 WA * 20 | 
ソースコード
import math
def main():
    N = int(input())
    if N == 0:
        print("")
        return
    # Initialize DP and previous arrays
    INF = float('inf')
    dp = [INF] * (N + 1)
    dp[0] = 0
    prev = [0] * (N + 1)
    for i in range(1, N + 1):
        max_j = int(math.isqrt(i))
        # Check j in descending order to prioritize larger j first
        for j in range(max_j, 0, -1):
            j_sq = j * j
            if i >= j_sq and dp[i - j_sq] + j < dp[i]:
                dp[i] = dp[i - j_sq] + j
                prev[i] = j
    # Reconstruct the partition list
    partition = []
    current = N
    while current > 0:
        j = prev[current]
        partition.append(j)
        current -= j * j
    # Reverse the partition to prioritize smaller segments first for lex order
    partition = partition[::-1]
    # Build the binary string
    current_char = '0'
    result = []
    for length in partition:
        segment = []
        char = current_char
        for _ in range(length):
            segment.append(char)
            char = '1' if char == '0' else '0'
        result.append(''.join(segment))
        current_char = segment[-1]
    print(''.join(result))
if __name__ == "__main__":
    main()
            
            
            
        
            
qwewe