結果
問題 | No.1928 Make a Binary Tree |
ユーザー | harurun |
提出日時 | 2021-12-01 12:57:09 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 2,571 ms / 3,000 ms |
コード長 | 3,002 bytes |
コンパイル時間 | 189 ms |
コンパイル使用メモリ | 82,668 KB |
実行使用メモリ | 417,920 KB |
最終ジャッジ日時 | 2024-11-06 04:21:26 |
合計ジャッジ時間 | 65,646 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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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 | 41 ms
53,192 KB |
testcase_01 | AC | 40 ms
53,988 KB |
testcase_02 | AC | 40 ms
53,316 KB |
testcase_03 | AC | 40 ms
53,140 KB |
testcase_04 | AC | 40 ms
52,972 KB |
testcase_05 | AC | 39 ms
53,844 KB |
testcase_06 | AC | 42 ms
53,432 KB |
testcase_07 | AC | 42 ms
54,520 KB |
testcase_08 | AC | 47 ms
60,432 KB |
testcase_09 | AC | 48 ms
61,312 KB |
testcase_10 | AC | 42 ms
54,096 KB |
testcase_11 | AC | 40 ms
53,564 KB |
testcase_12 | AC | 41 ms
53,732 KB |
testcase_13 | AC | 42 ms
54,176 KB |
testcase_14 | AC | 40 ms
54,840 KB |
testcase_15 | AC | 238 ms
80,492 KB |
testcase_16 | AC | 202 ms
79,444 KB |
testcase_17 | AC | 189 ms
79,520 KB |
testcase_18 | AC | 235 ms
80,052 KB |
testcase_19 | AC | 115 ms
76,852 KB |
testcase_20 | AC | 212 ms
79,780 KB |
testcase_21 | AC | 173 ms
78,276 KB |
testcase_22 | AC | 208 ms
79,860 KB |
testcase_23 | AC | 178 ms
78,904 KB |
testcase_24 | AC | 231 ms
80,364 KB |
testcase_25 | AC | 241 ms
80,428 KB |
testcase_26 | AC | 1,391 ms
120,088 KB |
testcase_27 | AC | 913 ms
102,388 KB |
testcase_28 | AC | 981 ms
105,120 KB |
testcase_29 | AC | 1,625 ms
124,724 KB |
testcase_30 | AC | 841 ms
100,908 KB |
testcase_31 | AC | 1,096 ms
110,856 KB |
testcase_32 | AC | 1,558 ms
123,232 KB |
testcase_33 | AC | 961 ms
103,356 KB |
testcase_34 | AC | 1,172 ms
110,724 KB |
testcase_35 | AC | 1,619 ms
184,072 KB |
testcase_36 | AC | 2,234 ms
301,208 KB |
testcase_37 | AC | 1,160 ms
122,840 KB |
testcase_38 | AC | 40 ms
53,764 KB |
testcase_39 | AC | 2,437 ms
293,616 KB |
testcase_40 | AC | 2,418 ms
293,596 KB |
testcase_41 | AC | 2,427 ms
293,224 KB |
testcase_42 | AC | 2,413 ms
295,976 KB |
testcase_43 | AC | 2,412 ms
295,720 KB |
testcase_44 | AC | 2,395 ms
295,208 KB |
testcase_45 | AC | 2,391 ms
295,668 KB |
testcase_46 | AC | 2,416 ms
296,500 KB |
testcase_47 | AC | 2,364 ms
295,108 KB |
testcase_48 | AC | 2,409 ms
294,920 KB |
testcase_49 | AC | 2,571 ms
417,920 KB |
testcase_50 | AC | 1,828 ms
126,336 KB |
testcase_51 | AC | 1,788 ms
125,864 KB |
testcase_52 | AC | 1,818 ms
125,640 KB |
testcase_53 | AC | 1,769 ms
125,252 KB |
testcase_54 | AC | 1,804 ms
125,456 KB |
testcase_55 | AC | 2,206 ms
294,860 KB |
testcase_56 | AC | 1,873 ms
127,044 KB |
testcase_57 | AC | 1,809 ms
126,400 KB |
testcase_58 | AC | 1,824 ms
128,972 KB |
testcase_59 | AC | 1,021 ms
127,944 KB |
ソースコード
import sys sys.setrecursionlimit(400000) class SegTree: def __init__(self,op,e,v): self._op=op self._e=e if isinstance(v,int): v=[e]*v self._n=len(v) self._log=self.ceil2() self._size=1<<self._log self._d=[e]*(2*self._size) for i in range(self._n): self._d[self._size+i]=v[i] for i in range(self._size-1,0,-1): self._update(i) return def ceil2(self): x=0 while (1<<x)<self._n: x+=1 return x def set(self,p,x): p+=self._size self._d[p]=x for i in range(1,self._log+1): self._update(p>>i) return def get(self,p): return self._d[p+self._size] def prod(self,left,right): sml=self._e smr=self._e left+=self._size right+=self._size while left<right: if left&1: sml=self._op(sml,self._d[left]) left+=1 if right&1: right-=1 smr=self._op(self._d[right],smr) left>>=1 right>>=1 return self._op(sml,smr) def all_prod(self): return self._d[1] def max_right(self,left,target): self.target=target if left==self._n: return self._n left+=self._size sm=self._e first=True while first or (left & -left)!=left: first=False while left%2==0: left>>=1 if not self._f(self._op(sm,self._d[left])): while left<self._size: left*=2 if self._f(self._op(sm,self._d[left])): sm=self._op(sm,self._d[left]) left+=1 return left-self._size sm=self._op(sm,self._d[left]) left+=1 return self._n def min_left(self,right,target): self.target=target if right==0: return 0 right+=self._size sm=self._e first=True while first or (right&-right)!=right: first=False right-=1 while right>1 and right%2: right>>=1 if not self._f(self._op(self._d[right],sm)): while right<self._size: right=2*right+1 if self._f(self._op(self._d[right],sm)): sm=self._op(self._d[right],sm) right-=1 return right+1-self._size sm=self._op(self._d[right],sm) return 0 def _update(self,k): self._d[k]=self._op(self._d[2*k],self._d[2*k+1]) return def _f(self,u): return u<self.target def main(): N=int(input()) Graph=[[]for i in range(N)] checked=[False]*N for i in range(N-1): x,y=map(int,input().split()) Graph[x-1].append(y-1) Graph[y-1].append(x-1) seg=SegTree(max,[-1,-1],N) searched=[0] def dfs(i): pre=searched[0] checked[i]=True for to in Graph[i]: if not checked[to]: cnt=dfs(to) seg.set(searched[0],[cnt,searched[0]]) searched[0]+=1 res=1 for j in range(2): tmp=seg.prod(pre,searched[0]) if tmp[0]==-1: break res+=tmp[0] seg.set(tmp[1],[-1,-1]) return res ans=dfs(0) print(ans) return main()