結果

問題 No.177 制作進行の宮森あおいです！
ユーザー maspy
提出日時 2020-03-24 22:32:14
言語 Python3
(3.13.1 + numpy 2.2.1 + scipy 1.14.1)
結果
AC  
実行時間 29 ms / 2,000 ms
コード長 2,946 bytes
コンパイル時間 285 ms
コンパイル使用メモリ 12,416 KB
実行使用メモリ 10,624 KB
最終ジャッジ日時 2025-01-01 18:38:37
合計ジャッジ時間 1,474 ms
ジャッジサーバーID
（参考情報） 		judge2 / judge3
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 3
other AC * 13
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 #
プレゼンテーションモードにする

#!/usr/bin/ python3.8
import sys
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines
from collections import deque
class Dinic:
    def __init__(self, N, source, sink):
        self.N = N
        self.G = [[] for _ in range(N)]
        self.source = source
        self.sink = sink
    def add_edge(self, fr, to, cap):
        n1 = len(self.G[fr])
        n2 = len(self.G[to])
        self.G[fr].append([to, cap, n2])
        self.G[to].append([fr, 0, n1])  # 逆辺を cap 0 で追加
    def add_edge_undirected(self, fr, to, cap):
        n1 = len(self.G[fr])
        n2 = len(self.G[to])
        self.G[fr].append([to, cap, n2])
        self.G[to].append([fr, cap, n1])
    def bfs(self):
        level = [0] * self.N
        G = self.G; source = self.source; sink = self.sink
        q = deque([source])
        level[source] = 1
        pop = q.popleft; append = q.append
        while q:
            v = pop()
            lv = level[v] + 1
            for to, cap, rev in G[v]:
                if not cap:
                    continue
                if level[to]:
                    continue
                level[to] = lv
                if to == sink:
                    self.level = level
                    return
                append(to)
        self.level = level
    def dfs(self, v, f):
        if v == self.sink:
            return f
        G = self.G
        prog = self.progress
        level = self.level
        lv = level[v]
        E = G[v]
        for i in range(prog[v], len(E)):
            to, cap, rev = E[i]
            prog[v] = i
            if not cap:
                continue
            if level[to] <= lv:
                continue
            x = f if f < cap else cap
            ff = self.dfs(to, x)
            if ff:
                E[i][1] -= ff
                G[to][rev][1] += ff
                return ff
        return 0
    def max_flow(self):
        INF = 10**18
        flow = 0
        while True:
            self.bfs()
            if not self.level[self.sink]:
                return flow
            self.progress = [0] * self.N
            while True:
                f = self.dfs(self.source, INF)
                if not f:
                    break
                flow += f
        return flow
W = int(readline())
N = int(readline())
J = tuple(map(int, readline().split()))
M = int(readline())
C = tuple(map(int, readline().split()))
source = 0
sink = N + M + 1
dinic = Dinic(N + M + 2, source, sink)
add = dinic.add_edge
for i, x in enumerate(J, 1):
    add(source, i, x)
for i, x in enumerate(C, 1):
    add(N + i, sink, x)
INF = W + 10
for i, line in enumerate(readlines(), 1):
    Q, *X = map(int, line.split())
    X = set(X)
    for j in range(1, N + 1):
        if j in X:
            continue
        add(j, N + i, INF)
f = dinic.max_flow()
answer = 'SHIROBAKO' if f >= W else 'BANSAKUTSUKITA'
print(answer)
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