結果
問題 | No.1640 簡単な色塗り |
ユーザー | harurun |
提出日時 | 2021-06-19 15:21:53 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 630 ms / 2,000 ms |
コード長 | 2,645 bytes |
コンパイル時間 | 207 ms |
コンパイル使用メモリ | 82,224 KB |
実行使用メモリ | 119,336 KB |
最終ジャッジ日時 | 2024-06-29 14:49:50 |
合計ジャッジ時間 | 27,386 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
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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 | 43 ms
55,340 KB |
testcase_01 | AC | 40 ms
55,020 KB |
testcase_02 | AC | 42 ms
54,800 KB |
testcase_03 | AC | 40 ms
54,608 KB |
testcase_04 | AC | 217 ms
115,636 KB |
testcase_05 | AC | 239 ms
117,228 KB |
testcase_06 | AC | 40 ms
55,060 KB |
testcase_07 | AC | 40 ms
54,376 KB |
testcase_08 | AC | 40 ms
54,920 KB |
testcase_09 | AC | 39 ms
55,164 KB |
testcase_10 | AC | 404 ms
99,108 KB |
testcase_11 | AC | 368 ms
96,008 KB |
testcase_12 | AC | 330 ms
93,384 KB |
testcase_13 | AC | 532 ms
113,548 KB |
testcase_14 | AC | 544 ms
114,552 KB |
testcase_15 | AC | 286 ms
90,068 KB |
testcase_16 | AC | 325 ms
92,076 KB |
testcase_17 | AC | 466 ms
105,568 KB |
testcase_18 | AC | 175 ms
80,508 KB |
testcase_19 | AC | 344 ms
92,400 KB |
testcase_20 | AC | 392 ms
97,088 KB |
testcase_21 | AC | 360 ms
95,792 KB |
testcase_22 | AC | 156 ms
79,716 KB |
testcase_23 | AC | 410 ms
100,780 KB |
testcase_24 | AC | 235 ms
84,608 KB |
testcase_25 | AC | 353 ms
94,628 KB |
testcase_26 | AC | 469 ms
103,816 KB |
testcase_27 | AC | 284 ms
89,080 KB |
testcase_28 | AC | 539 ms
112,588 KB |
testcase_29 | AC | 429 ms
104,696 KB |
testcase_30 | AC | 217 ms
83,084 KB |
testcase_31 | AC | 582 ms
116,780 KB |
testcase_32 | AC | 521 ms
109,544 KB |
testcase_33 | AC | 392 ms
99,328 KB |
testcase_34 | AC | 395 ms
105,312 KB |
testcase_35 | AC | 340 ms
98,320 KB |
testcase_36 | AC | 217 ms
83,024 KB |
testcase_37 | AC | 218 ms
84,632 KB |
testcase_38 | AC | 464 ms
110,860 KB |
testcase_39 | AC | 323 ms
91,888 KB |
testcase_40 | AC | 307 ms
90,848 KB |
testcase_41 | AC | 441 ms
106,040 KB |
testcase_42 | AC | 352 ms
94,048 KB |
testcase_43 | AC | 317 ms
95,316 KB |
testcase_44 | AC | 351 ms
95,928 KB |
testcase_45 | AC | 278 ms
91,080 KB |
testcase_46 | AC | 213 ms
82,900 KB |
testcase_47 | AC | 193 ms
81,940 KB |
testcase_48 | AC | 441 ms
114,612 KB |
testcase_49 | AC | 151 ms
79,616 KB |
testcase_50 | AC | 41 ms
55,996 KB |
testcase_51 | AC | 39 ms
55,712 KB |
testcase_52 | AC | 609 ms
119,336 KB |
testcase_53 | AC | 630 ms
117,900 KB |
07_evil_01.txt | AC | 1,054 ms
159,720 KB |
07_evil_02.txt | AC | 1,486 ms
195,336 KB |
ソースコード
class dsu: def __init__(self,n): assert n>0,"n must be Natural" self.n=n self.parents=[-1]*n return def find(self,x): assert x<self.n,"warning!! this is 0 index" if self.parents[x]<0: return x self.parents[x]=self.find(self.parents[x]) return self.parents[x] def merge(self,x,y): assert x<self.n and y<self.n,"warning!! this is 0 index" x=self.find(x) y=self.find(y) if x==y: return if self.parents[x]>self.parents[y]: x,y=y,x self.parents[x]+=self.parents[y] self.parents[y]=x return def size(self,x): assert x<self.n,"warning!! this is 0 index" return -self.parents[self.find(x)] def same(self,x,y): assert x<self.n and y<self.n,"warning!! this is 0 index" return self.find(x)==self.find(y) def leader(self,x): assert x<self.n,"warning!! this is 0 index" if self.parents[x]<0: return x self.parents[x]=self.leader(self.parents[x]) return self.parents[x] def groups(self): ld=[self.leader(i) for i in range(self.n)] res=[[] for _ in range(self.n)] for i in range(self.n): res[ld[i]].append(i) return list(filter(lambda a:a !=[],res)) from collections import deque def main(): N=int(input()) uf=dsu(N) to=[[]for _ in[0]*N] for i in range(N): A,B=map(int,input().split()) uf.merge(A-1,B-1) to[A-1].append([B-1,i]) if A!=B: to[B-1].append([A-1,i]) seen=[0]*N ans=[-1]*N gr=uf.groups() for linked in gr: is_cycle=True root=-1 cycle_cnt=0 for point in linked: link_size=len(to[point]) for k in range(link_size): if to[point][k][0]==point: cycle_cnt+=1 is_cycle=False ans[to[point][k][1]]=point+1 root=point if cycle_cnt>1: print("No") return if is_cycle: next_point=-1 que=deque() que.append([linked[0],-1]) while que: q=que.pop() for j in to[q[0]]: if j[1]==q[1]: continue if seen[j[0]]: root=j[0] next_point=q[0] ans[j[1]]=root+1 que.clear() break que.append([j[0],j[1]]) seen[q[0]]=1 if next_point==-1: print("No") return dq=deque() dq.append(root) while dq: q=dq.pop() for j in to[q]: if ans[j[1]]==-1: ans[j[1]]=j[0]+1 dq.append(j[0]) for i in ans: if i==-1: print("No") return print("Yes") for i in ans: print(i) return main()