Submission #834598

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
834598	2023-08-22 15:45:33	NemanjaSo2005	Making Friends on Joitter is Fun (JOI20_joitter2)	C++17	100 / 100	1061 ms	87948 KiB

joitter2

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#include<bits/stdc++.h>
#define ll long long
using namespace std;
const int maxn=1e5+5;
int N,M;
ll rod[maxn],vel[maxn];
ll res;
set<int> cukomp[maxn],kompuc[maxn],compout[maxn],compin[maxn];
vector<int> koji[maxn];
queue<pair<int,int>> Q;
int getpar(int x){
   if(rod[x]==x)
      return x;
   rod[x]=getpar(rod[x]);
   return rod[x];
}
void pretvori(int a,int b){
   for(auto it=kompuc[a].begin();it!=kompuc[a].end();it++){
      cukomp[*it].erase(a);
      if(getpar(*it)!=b)
         cukomp[*it].insert(b);
   }
  // cout<<"A"<<endl;
   for(auto it=compout[a].begin();it!=compout[a].end();it++){
      compin[*it].erase(a);
      compin[*it].insert(b);
   }
   //cout<<"B"<<endl;
   for(auto it=compin[a].begin();it!=compin[a].end();it++){
      compout[*it].erase(a);
 
 
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Compilation message (stderr)

joitter2.cpp: In function 'void spoj(int, int)':
joitter2.cpp:55:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   55 |    for(int i=0;i<koji[b].size();i++){
      |                ~^~~~~~~~~~~~~~~

• Subtask 1: 1 / 1
• Subtask 2: 16 / 16
• Subtask 3: 83 / 83