Submission #2162230
Source Code Expand
#include <bits/stdc++.h> #define FOR(i,a,b) for(int i=(a);i<(b);i++) #define REP(i,a) FOR(i,0,a) using namespace std; typedef pair<int,bool> P; const int MAX_N=1e5; set<P> G[MAX_N]; int main(){ int N; scanf("%d",&N); REP(i,N-1){ int a,b; scanf("%d %d",&a,&b); a--; b--; G[a].insert(P(b,false)); G[b].insert(P(a,false)); } REP(i,N-1){ int a,b; scanf("%d %d",&a,&b); a--; b--; G[a].insert(P(b,true)); G[b].insert(P(a,true)); } int c=0; REP(i,N){ int v=i,v2; while(1){ v2=-1; for(auto ite=G[v].begin();ite!=G[v].end();){ auto ite2=ite; ite2++; if (ite2==G[v].end()) break; if (ite->first==ite2->first){ v2=ite->first; if (G[v].size()<G[v2].size()){ swap(v,v2); } break; } ite++; if (ite->second){ ite++; } } if (v2!=-1){ c++; G[v].erase(P(v2,false)); G[v].erase(P(v2,true)); G[v2].erase(P(v,false)); G[v2].erase(P(v,true)); for(auto ite2=G[v2].begin();ite2!=G[v2].end();){ G[ite2->first].erase(P(v2,ite2->second)); G[ite2->first].insert(P(v,ite2->second)); G[v].insert(*ite2); ite2=G[v2].erase(ite2); } }else{ break; } } } if (c==N-1){ printf("YES\n"); }else{ printf("NO\n"); } return 0; }
Submission Info
Submission Time | |
---|---|
Task | E - Blue and Red Tree |
User | addeight |
Language | C++14 (GCC 5.4.1) |
Score | 0 |
Code Size | 1348 Byte |
Status | TLE |
Exec Time | 6305 ms |
Memory | 25792 KB |
Compile Error
./Main.cpp: In function ‘int main()’: ./Main.cpp:15:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&N); ^ ./Main.cpp:18:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&a,&b); ^ ./Main.cpp:26:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&a,&b); ^
Judge Result
Set Name | Sample | All | ||||||
---|---|---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 0 / 1400 | ||||||
Status |
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|
Set Name | Test Cases |
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Sample | sample1.txt, sample2.txt, sample3.txt |
All | sample1.txt, sample2.txt, sample3.txt, in1.txt, in10.txt, in11.txt, in12.txt, in13.txt, in14.txt, in15.txt, in16.txt, in17.txt, in18.txt, in19.txt, in2.txt, in20.txt, in21.txt, in22.txt, in23.txt, in24.txt, in25.txt, in26.txt, in27.txt, in28.txt, in29.txt, in3.txt, in30.txt, in31.txt, in32.txt, in33.txt, in34.txt, in35.txt, in36.txt, in37.txt, in38.txt, in39.txt, in4.txt, in40.txt, in41.txt, in42.txt, in43.txt, in44.txt, in45.txt, in46.txt, in47.txt, in5.txt, in6.txt, in7.txt, in8.txt, in9.txt, sample1.txt, sample2.txt, sample3.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
in1.txt | AC | 3 ms | 4864 KB |
in10.txt | AC | 174 ms | 23680 KB |
in11.txt | AC | 1125 ms | 23680 KB |
in12.txt | AC | 521 ms | 23680 KB |
in13.txt | AC | 908 ms | 23680 KB |
in14.txt | AC | 933 ms | 23680 KB |
in15.txt | AC | 860 ms | 23680 KB |
in16.txt | AC | 778 ms | 23680 KB |
in17.txt | AC | 982 ms | 23680 KB |
in18.txt | AC | 660 ms | 23680 KB |
in19.txt | AC | 1072 ms | 23680 KB |
in2.txt | AC | 3 ms | 4864 KB |
in20.txt | AC | 926 ms | 23680 KB |
in21.txt | AC | 951 ms | 23680 KB |
in22.txt | AC | 724 ms | 23680 KB |
in23.txt | AC | 1105 ms | 23680 KB |
in24.txt | AC | 1089 ms | 23680 KB |
in25.txt | AC | 944 ms | 23680 KB |
in26.txt | AC | 706 ms | 23680 KB |
in27.txt | AC | 781 ms | 25728 KB |
in28.txt | AC | 580 ms | 23680 KB |
in29.txt | AC | 907 ms | 23680 KB |
in3.txt | AC | 3 ms | 4864 KB |
in30.txt | AC | 1101 ms | 23680 KB |
in31.txt | TLE | 6304 ms | 25728 KB |
in32.txt | TLE | 6304 ms | 25728 KB |
in33.txt | TLE | 6304 ms | 25728 KB |
in34.txt | TLE | 6304 ms | 23680 KB |
in35.txt | TLE | 6305 ms | 23680 KB |
in36.txt | TLE | 6305 ms | 23680 KB |
in37.txt | TLE | 6304 ms | 23680 KB |
in38.txt | TLE | 6304 ms | 23680 KB |
in39.txt | TLE | 6305 ms | 23680 KB |
in4.txt | AC | 146 ms | 23680 KB |
in40.txt | TLE | 6305 ms | 23680 KB |
in41.txt | TLE | 6305 ms | 23680 KB |
in42.txt | TLE | 6305 ms | 23680 KB |
in43.txt | TLE | 6304 ms | 25728 KB |
in44.txt | TLE | 6304 ms | 25728 KB |
in45.txt | TLE | 6304 ms | 25728 KB |
in46.txt | TLE | 6304 ms | 25728 KB |
in47.txt | TLE | 6304 ms | 25728 KB |
in5.txt | AC | 184 ms | 23680 KB |
in6.txt | TLE | 6304 ms | 25792 KB |
in7.txt | AC | 177 ms | 23680 KB |
in8.txt | AC | 190 ms | 23680 KB |
in9.txt | AC | 188 ms | 23680 KB |
sample1.txt | AC | 3 ms | 4864 KB |
sample2.txt | AC | 4 ms | 4992 KB |
sample3.txt | AC | 3 ms | 4864 KB |