結果

問題 No.1911 Alternately Coloring
ユーザー chineristACchineristAC
提出日時 2022-01-17 02:19:55
言語 PyPy3
(7.3.15)
結果
AC  
実行時間 2,064 ms / 4,000 ms
コード長 2,472 bytes
コンパイル時間 193 ms
コンパイル使用メモリ 82,176 KB
実行使用メモリ 84,816 KB
最終ジャッジ日時 2024-05-02 19:36:15
合計ジャッジ時間 36,245 ms
ジャッジサーバーID
(参考情報)
judge2 / judge5
このコードへのチャレンジ
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 49 ms
56,192 KB
testcase_01 AC 64 ms
67,328 KB
testcase_02 AC 49 ms
57,216 KB
testcase_03 AC 81 ms
75,264 KB
testcase_04 AC 78 ms
73,216 KB
testcase_05 AC 62 ms
66,816 KB
testcase_06 AC 2,064 ms
84,116 KB
testcase_07 AC 1,449 ms
81,960 KB
testcase_08 AC 1,507 ms
81,988 KB
testcase_09 AC 1,903 ms
83,372 KB
testcase_10 AC 1,288 ms
81,872 KB
testcase_11 AC 1,933 ms
83,980 KB
testcase_12 AC 1,865 ms
84,152 KB
testcase_13 AC 1,775 ms
83,432 KB
testcase_14 AC 1,289 ms
81,656 KB
testcase_15 AC 1,711 ms
82,520 KB
testcase_16 AC 1,709 ms
82,880 KB
testcase_17 AC 1,574 ms
82,356 KB
testcase_18 AC 1,408 ms
81,736 KB
testcase_19 AC 1,524 ms
82,368 KB
testcase_20 AC 1,740 ms
83,280 KB
testcase_21 AC 1,399 ms
82,304 KB
testcase_22 AC 1,659 ms
83,032 KB
testcase_23 AC 2,006 ms
84,816 KB
testcase_24 AC 75 ms
72,704 KB
testcase_25 AC 76 ms
73,088 KB
testcase_26 AC 74 ms
73,472 KB
testcase_27 AC 1,919 ms
83,048 KB
testcase_28 AC 866 ms
79,948 KB
testcase_29 AC 1,751 ms
83,744 KB
testcase_30 AC 46 ms
56,320 KB
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 #

class Dijkstra():
    class Edge():
        def __init__(self, _to, _cost):
            self.to = _to
            self.cost = _cost

    def __init__(self, V):
        self.G = [[] for i in range(V)]
        self._E = 0
        self._V = V

    @property
    def E(self):
        return self._E

    @property
    def V(self):
        return self._V

    def add_edge(self, _from, _to, _cost):
        self.G[_from].append(self.Edge(_to, _cost))
        self._E += 1

    def shortest_path(self, s):
        import heapq
        que = []
        d = [10**15] * self.V
        d[s] = 0
        heapq.heappush(que, (0, s))

        while len(que) != 0:
            cost, v = heapq.heappop(que)
            if d[v] < cost: continue

            for i in range(len(self.G[v])):
                e = self.G[v][i]
                if d[e.to] > d[v] + e.cost:
                    d[e.to] = d[v] + e.cost
                    heapq.heappush(que, (d[e.to], e.to))
        return d

import sys,random,bisect
from collections import deque,defaultdict
from heapq import heapify,heappop,heappush
from itertools import permutations
from math import log,gcd

input = lambda :sys.stdin.readline()
mi = lambda :map(int,input().split())
li = lambda :list(mi())

def solve(N,M,E,R,B):
    G = Dijkstra(2*N)
    edge = [[] for i in range(N)]
    for u,v in E:    
        u,v = u-1,v-1

        G.add_edge(2*u,2*v+1,max(R[v]-B[v],0))
        G.add_edge(2*u+1,2*v,max(B[v]-R[v],0))
        G.add_edge(2*v,2*u+1,max(R[u]-B[u],0))
        G.add_edge(2*v+1,2*u,max(B[u]-R[u],0))

        edge[u].append(v)
        edge[v].append(u)
    
    color = [-1] * N
    color[0] = 0
    stack = [0]
    flag = True
    while stack:
        v = stack.pop()
        for nv in edge[v]:
            if color[nv]==-1:
                color[nv] = 1 - color[v]
                stack.append(nv)
            else:
                if color[nv] != 1 - color[v]:
                    flag = False
    
    if flag:
        x,y = 0,0
        for i in range(N):
            if color[i]:
                x += R[i]; y += B[i]
            else:
                y += R[i]; x += B[i]
        return max(x,y)
    
    res = sum(max(R[i],B[i]) for i in range(N))
    minus = res

    for i in range(N):
        t0 = G.shortest_path(2*i)[2*i+1]
        t1 = G.shortest_path(2*i+1)[2*i]
        minus = min(minus,t0,t1)

    return res-minus

N,M = mi()
E = [tuple(mi()) for i in range(M)]
R = li()
B = li()
print(solve(N,M,E,R,B))
0