結果

問題 No.177 制作進行の宮森あおいです！
ユーザー tkw_tech
提出日時 2016-11-27 00:41:30
言語 PyPy3
(7.3.15)
結果
AC  
実行時間 116 ms / 2,000 ms
コード長 2,319 bytes
コンパイル時間 487 ms
コンパイル使用メモリ 82,048 KB
実行使用メモリ 79,488 KB
最終ジャッジ日時 2024-11-27 11:39:42
合計ジャッジ時間 2,655 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

# coding: utf-8
import queue
class Dinic:
    """Implementation of Dinic's Alogorithm"""
    def __init__(self, v, inf = 1000000007):
        self.V = v
        self.inf = inf
        self.G = [[] for _ in range(v)]
        self.level = [0 for _ in range(v)]
        self.iter = [0 for _ in range(v)]
    def add_edge(self, from_, to, cap):
        self.G[from_].append({'to':to, 'cap':cap, 'rev':len(self.G[to])})
        self.G[to].append({'to':from_, 'cap':0, 'rev':len(self.G[from_])-1})
    # sからの最短距離をbfsで計算
    def bfs(self, s):
        self.level = [-1 for _ in range(self.V)]
        self.level[s] = 0;
        que = queue.Queue()
        que.put(s)
        while not que.empty():
            v = que.get()
            for i in range(len(self.G[v])):
                e = self.G[v][i]
                if e['cap'] > 0 and self.level[e['to']] < 0:
                    self.level[e['to']] = self.level[v] + 1
                    que.put(e['to'])
    # 増加バスをdfsで探す
    def dfs(self, v, t, f):
        if v == t: return f
        for i in range(self.iter[v], len(self.G[v])):
            self.iter[v] = i
            e = self.G[v][i]
            if e['cap'] > 0 and self.level[v] < self.level[e['to']]:
                d = self.dfs(e['to'], t, min(f, e['cap']))
                if d > 0:
                    e['cap'] -= d
                    self.G[e['to']][e['rev']]['cap'] += d
                    return d
        return 0
    def max_flow(self, s, t):
        flow = 0
        while True:
            self.bfs(s)
            if self.level[t] < 0 : return flow
            self.iter = [0 for _ in range(self.V)]
            f = self.dfs(s,t, self.inf)
            while f > 0:
                flow += f
                f = self.dfs(s,t, self.inf)
W = int(input())
N = int(input())
J = [int(x) for x in input().split()]
M = int(input())
C = [int(x) for x in input().split()]
mf = Dinic(N+M+2)
source, sink = N+M, N+M+1
INF = 10**9
for i, j in enumerate(J):
    mf.add_edge(source, i, j)
for i, c in enumerate(C):
    mf.add_edge(N+i, sink, c)
    _, *X = [int(x)-1 for x in input().split()]
    for j in range(N):
        if j not in X:
            mf.add_edge(j, i+N, INF)
maxflow = mf.max_flow(source, sink)
print("SHIROBAKO" if maxflow >= W else "BANSAKUTSUKITA")
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