結果

問題 No.861 ケーキカット
ユーザー vwxyzvwxyz
提出日時 2024-04-08 05:14:03
言語 PyPy3
(7.3.15)
結果
AC  
実行時間 668 ms / 1,000 ms
コード長 4,889 bytes
コンパイル時間 3,091 ms
コンパイル使用メモリ 81,444 KB
実行使用メモリ 78,680 KB
最終ジャッジ日時 2024-04-08 05:15:33
合計ジャッジ時間 26,217 ms
ジャッジサーバーID
(参考情報)
judge11 / judge15
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 603 ms
78,548 KB
testcase_01 AC 606 ms
78,544 KB
testcase_02 AC 654 ms
78,672 KB
testcase_03 AC 594 ms
78,544 KB
testcase_04 AC 589 ms
78,544 KB
testcase_05 AC 637 ms
78,548 KB
testcase_06 AC 632 ms
78,676 KB
testcase_07 AC 600 ms
78,544 KB
testcase_08 AC 643 ms
78,544 KB
testcase_09 AC 617 ms
78,668 KB
testcase_10 AC 666 ms
78,680 KB
testcase_11 AC 668 ms
78,544 KB
testcase_12 AC 610 ms
78,544 KB
testcase_13 AC 626 ms
78,544 KB
testcase_14 AC 646 ms
78,672 KB
testcase_15 AC 611 ms
78,548 KB
testcase_16 AC 613 ms
78,548 KB
testcase_17 AC 628 ms
78,544 KB
testcase_18 AC 603 ms
78,544 KB
testcase_19 AC 602 ms
78,544 KB
testcase_20 AC 604 ms
78,544 KB
testcase_21 AC 662 ms
78,544 KB
testcase_22 AC 625 ms
78,548 KB
testcase_23 AC 628 ms
78,548 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 #

from collections import defaultdict

class UnionFind:
    def __init__(self,N,label=None,f=None,weighted=False,rollback=False):
        self.N=N
        self.parents=[None]*self.N
        self.size=[1]*self.N
        self.roots={i for i in range(self.N)}
        self.label=label
        if self.label!=None:
            self.label=[x for x in label]
        self.f=f
        self.weighted=weighted
        if self.weighted:
            self.weight=[0]*self.N
        self.rollback=rollback
        if self.rollback:
            self.operate_list=[]
            self.operate_set=[]

    def Find(self,x):
        stack=[]
        while self.parents[x]!=None:
            stack.append(x)
            x=self.parents[x]
        if not self.rollback:
            if self.weighted:
                w=0
                for y in stack[::-1]:
                    self.parents[y]=x
                    w+=self.weight[y]
                    self.weight[y]=w
            else:
                for y in stack[::-1]:
                    self.parents[y]=x
        return x

    def Union(self,x,y,w=None):
        root_x=self.Find(x)
        root_y=self.Find(y)
        if self.rollback:
            self.operate_list.append([])
            self.operate_set.append([])
        if root_x==root_y:
            if self.weighted:
                if self.weight[y]-self.weight[x]==w:
                    return True
                else:
                    return False
        else:
            if self.size[root_x]<self.size[root_y]:
                x,y=y,x
                root_x,root_y=root_y,root_x
                if self.weighted:
                    w=-w
            if self.rollback:
                self.operate_list[-1].append((self.parents,root_y,self.parents[root_y]))
                self.operate_list[-1].append((self.size,root_x,self.size[root_x]))
                self.operate_set[-1].append(root_y)
                if self.label!=None:
                    self.operate_list[-1]((self.label,root_x,self.label[root_x]))
                if self.weighted:
                    self.operate_list[-1].append((self.weight,root_y,self.weight[root_y]))
            self.parents[root_y]=root_x
            self.size[root_x]+=self.size[root_y]
            self.roots.remove(root_y)
            if self.label!=None:
                self.label[root_x]=self.f(self.label[root_x],self.label[root_y])
            if self.weighted:
                self.weight[root_y]=w+self.weight[x]-self.weight[y]

    def Size(self,x):
        return self.size[self.Find(x)]

    def Same(self,x,y):
        return self.Find(x)==self.Find(y)

    def Label(self,x):
        return self.label[self.Find(x)]

    def Weight(self,x,y):
        root_x=self.Find(x)
        root_y=self.Find(y)
        if root_x!=root_y:
            return None
        return self.weight[y]-self.weight[x]

    def Roots(self):
        return list(self.roots)

    def Linked_Components_Count(self):
        return len(self.roots)

    def Linked_Components(self):
        linked_components=defaultdict(list)
        for x in range(self.N):
            linked_components[self.Find(x)].append(x)
        return linked_components

    def Rollback(self):
        assert self.rollback
        if self.operate_list:
            for lst,x,v in self.operate_list.pop():
                lst[x]=v
            for x in self.operate_set.pop():
                self.roots.add(x)            
            return True
        else:
            return False

    def __str__(self):
        linked_components=defaultdict(list)
        for x in range(self.N):
            linked_components[self.Find(x)].append(x)
        return "\n".join(f"{r}: {linked_components[r]}" for r in sorted(list(linked_components.keys())))

C=[list(map(int,input().split())) for i in range(5)]
idx0=[]
for i in range(4):
    idx0.append((i,0))
for i in range(4):
    idx0.append((4,i))
for i in range(4,0,-1):
    idx0.append((i,4))
for i in range(4,0,-1):
    idx0.append((0,i))
idx1=[(i,j) for i in range(1,4) for j in range(1,4)]
ans=1<<60

cnt=0
for bit0 in range(0,1<<16,2):
    if sum(1 for i in range(16) if bit0>>i&1!=bit0>>(i+1)%16&1)>2:
        continue
    cnt+=1
    for bit1 in range(1<<9):
        A=[[None]*5 for i in range(5)]
        for k in range(16):
            i,j=idx0[k]
            A[i][j]=bit0>>k&1
        for k in range(9):
            i,j=idx1[k]
            A[i][j]=bit1>>k&1
        UF=UnionFind(25)
        for i in range(5):
            for j in range(5):
                for di,dj in ((0,1),(1,0)):
                    if i+di<5 and j+dj<5 and A[i][j]==A[i+di][j+dj]:
                        UF.Union(i*5+j,(i+di)*5+(j+dj))
        if UF.Linked_Components_Count()<=2:
            S=[0,0]
            for i in range(5):
                for j in range(5):
                    S[A[i][j]]+=C[i][j]
            ans=min(ans,abs(S[0]-S[1]))
print(ans)
0