Submission #855196

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
855196	2023-09-30 14:47:29	willychan	Tourism (JOI23_tourism)	C++14	100 / 100	818 ms	19536 KiB

tourism

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#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
//#include<bits/extc++.h>
//__gnu_pbds
int n,m,q;
const int N = 1e5+5;
int sz[N];
int hd[N];
int dep[N];
int p[N];
vector<int> side[N];
int t;
void dfs_sz(int cur){
  sz[cur]=1;
  for(int i=0;i<side[cur].size();i++){
    if(!sz[side[cur][i]]){
      dfs_sz(side[cur][i]);
      sz[cur]+=sz[side[cur][i]];
      if(sz[side[cur][i]]>sz[side[cur][0]]){
        swap(side[cur][i],side[cur][0]);
      }
    }
  }
}
void dfs_hd(int cur){
  dep[cur]=++t;
  for(int i=0;i<side[cur].size();i++){
    if(!hd[side[cur][i]]){
      p[side[cur][i]] = cur;
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

tourism.cpp: In function 'void dfs_sz(int)':
tourism.cpp:16:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |  for(int i=0;i<side[cur].size();i++){
      |              ~^~~~~~~~~~~~~~~~~
tourism.cpp: In function 'void dfs_hd(int)':
tourism.cpp:28:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |  for(int i=0;i<side[cur].size();i++){
      |              ~^~~~~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 7 / 7
• Subtask 4: 18 / 18
• Subtask 5: 24 / 24
• Subtask 6: 41 / 41