結果

問題 No.1557 Binary Variable
ユーザー Programmerryoki
提出日時 2021-06-25 22:54:00
言語 Python3
(3.13.1 + numpy 2.2.1 + scipy 1.14.1)
結果
AC  
実行時間 936 ms / 2,000 ms
コード長 1,978 bytes
コンパイル時間 105 ms
コンパイル使用メモリ 13,056 KB
実行使用メモリ 15,708 KB
最終ジャッジ日時 2024-06-25 08:47:23
合計ジャッジ時間 31,988 ms
ジャッジサーバーID
（参考情報） 		judge4 / judge2
このコードへのチャレンジ
（要ログイン）
ファイルパターン 結果
sample AC * 3
other AC * 34
権限があれば一括ダウンロードができます

ソースコード

diff # 

from bisect import bisect_left

N,M = [int(i) for i in input().split()]
union = []
dic = {}
for _ in range(M):
    # print(union)
    # print(dic)
    L,R = [int(i) for i in input().split()]
    ind = bisect_left(union, L)
    if len(union) == 0:
        union.append(L)
        dic[L] = (L,R)
    if ind == 0:
        l,r = dic[union[0]]
        if R < l:
            union = [L] + union
            dic[L] = (L,R)
            continue
        n = None
        if L <= l <= R <= r:
            n = (l, R)
        elif L <= l <= r <= R:
            n = (l,r)
        union[0] = n[0]
        del dic[l]
        dic[n[0]] = n
    elif ind == len(union):
        l,r = dic[union[ind-1]]
        if r < L:
            union.append(L)
            dic[L] = (L,R)
            continue
        elif l <= L <= r <= R:
            n = (L,r)
        elif l <= L <= R <= r:
            n = (L,R)
        elif L <= l <= R <= r:
            n = (l, R)
        elif L <= l <= r <= R:
            n = (l,r)
        union[ind-1] = n[0]
        del dic[l]
        dic[n[0]] = n
    else:
        l,r = dic[union[ind-1]]
        n = None
        if r < L:
            l,r = dic[union[ind]]
            if R < l:
                union = [L] + union
                dic[L] = (L,R)
                continue
            n = None
            if l <= L <= r <= R:
                n = (L,r)
            elif l <= L <= R <= r:
                n = (L,R)
            elif L <= l <= R <= r:
                n = (l, R)
            elif L <= l <= r <= R:
                n = (l,r)
            union[ind] = n[0]
            del dic[l]
            dic[n[0]] = n
            continue
        elif l <= L <= r <= R:
            n = (L,r)
        elif l <= L <= R <= r:
            n = (L,R)
        elif L <= l <= R <= r:
            n = (l, R)
        elif L <= l <= r <= R:
            n = (l,r)
        union[ind-1] = n[0]
        del dic[l]
        dic[n[0]] = n
# print(union)
# print(dic)
print(N-len(union))
0