結果

問題 No.2604 Initial Motion
ユーザー ニックネームニックネーム
提出日時 2024-01-13 00:18:01
言語 PyPy3
(7.3.15)
結果
TLE  
実行時間 -
コード長 4,329 bytes
コンパイル時間 452 ms
コンパイル使用メモリ 82,148 KB
実行使用メモリ 92,800 KB
最終ジャッジ日時 2024-09-28 00:39:18
合計ジャッジ時間 40,724 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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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 66 ms
67,328 KB
testcase_01 AC 65 ms
67,584 KB
testcase_02 AC 66 ms
67,712 KB
testcase_03 AC 239 ms
80,552 KB
testcase_04 AC 263 ms
80,792 KB
testcase_05 AC 248 ms
80,584 KB
testcase_06 AC 235 ms
80,244 KB
testcase_07 AC 241 ms
80,440 KB
testcase_08 AC 251 ms
80,688 KB
testcase_09 AC 222 ms
80,488 KB
testcase_10 AC 229 ms
80,236 KB
testcase_11 AC 235 ms
80,428 KB
testcase_12 AC 246 ms
80,392 KB
testcase_13 AC 2,625 ms
89,452 KB
testcase_14 AC 1,798 ms
86,480 KB
testcase_15 AC 1,095 ms
85,192 KB
testcase_16 AC 2,262 ms
88,160 KB
testcase_17 TLE -
testcase_18 AC 2,884 ms
90,812 KB
testcase_19 AC 2,859 ms
90,936 KB
testcase_20 AC 2,296 ms
88,592 KB
testcase_21 AC 1,899 ms
86,544 KB
testcase_22 AC 2,766 ms
90,048 KB
testcase_23 AC 2,170 ms
87,960 KB
testcase_24 AC 2,804 ms
89,228 KB
testcase_25 TLE -
testcase_26 AC 2,176 ms
88,148 KB
testcase_27 AC 1,651 ms
86,036 KB
testcase_28 AC 2,270 ms
88,164 KB
testcase_29 AC 2,765 ms
89,664 KB
testcase_30 AC 1,713 ms
86,164 KB
testcase_31 AC 2,328 ms
88,652 KB
testcase_32 AC 2,704 ms
88,536 KB
testcase_33 AC 143 ms
82,944 KB
testcase_34 AC 2,520 ms
89,300 KB
testcase_35 TLE -
testcase_36 TLE -
testcase_37 AC 163 ms
82,432 KB
testcase_38 AC 140 ms
79,232 KB
testcase_39 AC 147 ms
79,616 KB
testcase_40 TLE -
testcase_41 TLE -
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ソースコード

diff # 

import heapq
from typing import Counter
class mcf_graph():
    n=1
    pos=[]
    g=[[]]
    def __init__(self,N):
        self.n=N
        self.pos=[]
        self.g=[[] for i in range(N)]
    def add_edge(self,From,To,cap,cost):
        assert 0<=From and From<self.n
        assert 0<=To and To<self.n
        m=len(self.pos)
        self.pos.append((From,len(self.g[From])))
        self.g[From].append({"to":To,"rev":len(self.g[To]),"cap":cap,"cost":cost})
        self.g[To].append({"to":From,"rev":len(self.g[From])-1,"cap":0,"cost":-cost})
    def get_edge(self,i):
        m=len(self.pos)
        assert 0<=i and i<m
        _e=self.g[self.pos[i][0]][self.pos[i][1]]
        _re=self.g[_e["to"]][_e["rev"]]
        return {"from":self.pos[i][0],"to":_e["to"],"cap":_e["cap"]+_re["cap"],
        "flow":_re["cap"],"cost":_e["cost"]}
    def edges(self):
        m=len(self.pos)
        result=[{} for i in range(m)]
        for i in range(m):
            tmp=self.get_edge(i)
            result[i]["from"]=tmp["from"]
            result[i]["to"]=tmp["to"]
            result[i]["cap"]=tmp["cap"]
            result[i]["flow"]=tmp["flow"]
            result[i]["cost"]=tmp["cost"]
        return result
    def flow(self,s,t,flow_limit=-1-(-1<<63)):
        return self.slope(s,t,flow_limit)[-1]
    def slope(self,s,t,flow_limit=-1-(-1<<63)):
        assert 0<=s and s<self.n
        assert 0<=t and t<self.n
        assert s!=t
        '''
         variants (C = maxcost):
         -(n-1)C <= dual[s] <= dual[i] <= dual[t] = 0
         reduced cost (= e.cost + dual[e.from] - dual[e.to]) >= 0 for all edge
        '''
        dual=[0 for i in range(self.n)]
        dist=[0 for i in range(self.n)]
        pv=[0 for i in range(self.n)]
        pe=[0 for i in range(self.n)]
        vis=[False for i in range(self.n)]
        def dual_ref():
            for i in range(self.n):
                dist[i]=-1-(-1<<63)
                pv[i]=-1
                pe[i]=-1
                vis[i]=False
            que=[]
            heapq.heappush(que,(0,s))
            dist[s]=0
            while(que):
                v=heapq.heappop(que)[1]
                if vis[v]:continue
                vis[v]=True
                if v==t:break
                '''
                 dist[v] = shortest(s, v) + dual[s] - dual[v]
                 dist[v] >= 0 (all reduced cost are positive)
                 dist[v] <= (n-1)C
                '''
                for i in range(len(self.g[v])):
                    e=self.g[v][i]
                    if vis[e["to"]] or (not(e["cap"])):continue
                    '''
                     |-dual[e.to]+dual[v]| <= (n-1)C
                     cost <= C - -(n-1)C + 0 = nC
                    '''
                    cost=e["cost"]-dual[e["to"]]+dual[v]
                    if dist[e["to"]]-dist[v]>cost:
                        dist[e["to"]]=dist[v]+cost
                        pv[e["to"]]=v
                        pe[e["to"]]=i
                        heapq.heappush(que,(dist[e["to"]],e["to"]))
            if not(vis[t]):
                return False
            for v in range(self.n):
                if not(vis[v]):continue
                dual[v]-=dist[t]-dist[v]
            return True
        flow=0
        cost=0
        prev_cost=-1
        result=[(flow,cost)]
        while(flow<flow_limit):
            if not(dual_ref()):
                break
            c=flow_limit-flow
            v=t
            while(v!=s):
                c=min(c,self.g[pv[v]][pe[v]]["cap"])
                v=pv[v]
            v=t
            while(v!=s):
                self.g[pv[v]][pe[v]]["cap"]-=c
                self.g[v][self.g[pv[v]][pe[v]]["rev"]]["cap"]+=c
                v=pv[v]
            d=-dual[s]
            flow+=c
            cost+=c*d
            if(prev_cost==d):
                result.pop()
            result.append((flow,cost))
            prev_cost=cost
        return result

from collections import Counter
k,n,m = map(int,input().split())
a = Counter(map(int,input().split()))
b = list(map(int,input().split()))
g = mcf_graph(n+2)
for i,v in a.items(): g.add_edge(0,i,v,0)
for i,v in enumerate(b,1):
    if v: g.add_edge(i,n+1,v,0)
for _ in range(m):
    u,v,d = map(int,input().split())
    g.add_edge(u,v,10**9,d); g.add_edge(v,u,10**9,d)
print(g.flow(0,n+1)[1])
0