Submission #90095

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
90095	2018-12-20 07:54:00	nicksona	Birthday gift (IZhO18_treearray)	C++14	100 / 100	1818 ms	172592 KiB

treearray

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#include<bits/stdc++.h>
#define ll long long
#define pb push_back
using namespace std;
int n,m,t;
int a,b;
vector <int> v[200001];
int par[200001][41];
int tin[200001],tout[200001];
int mas[200001];
int M=0;
set <int> s[200001];
set <int> s2[200001];
void go (int u,int p){
  par[u][0]=p;
  tin[u]=++M;
  for (int i=1;i<=30;i++){
    par[u][i]=par[par[u][i-1]][i-1];
  }
  
  for (int i=0;i<v[u].size();i++){
    int node=v[u][i];
    if (node!=p){
      go(node,u);
    }
  }
  tout[u]=++M;
}
bool is_par(int a,int b){
  if (tin[a]<=tin[b]&&tout[b]<=tout[a]){
 
 
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Compilation message (stderr)

treearray.cpp: In function 'void go(int, int)':
treearray.cpp:21:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i=0;i<v[u].size();i++){
               ~^~~~~~~~~~~~
treearray.cpp: At global scope:
treearray.cpp:57:7: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main () {
       ^

• Subtask 1: 12 / 12
• Subtask 2: 18 / 18
• Subtask 3: 26 / 26
• Subtask 4: 44 / 44