Submission #734279

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
734279	2023-05-02 08:19:20	mosiashvililuka	Making Friends on Joitter is Fun (JOI20_joitter2)	C++14	100 / 100	786 ms	71336 KiB

joitter2

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#include<bits/stdc++.h>
using namespace std;
int a,b,c,d,e,i,j,ii,jj,zx,xc,t,tes,msh[100009],C,D;
long long pas;
vector <int> V[100009];
set <int> in[100009],out[100009],sm[100009];//sm-c ideashi in-ebia ogond komponentis magivrad wveros nomers agdeb
set <int>::iterator it,tt;
bool check(int q, int w){
    if(out[w].find(q)==out[w].end()) return 0; else return 1;
}
void mrg(int Q, int W){
    int q=msh[Q],w=msh[W];
    if(q==w) return;
    if(V[q].size()+in[q].size()+out[q].size()+sm[q].size()<V[w].size()+in[w].size()+out[w].size()+sm[w].size()) swap(q,w);
    long long qw=V[q].size(),we=V[w].size(),Sq=sm[q].size(),Sw=sm[w].size();
    pas-=qw*(qw-1);
    pas-=we*(we-1);
    pas-=qw*Sq;
    pas-=we*Sw;
    //
    vector <pair <int, int> > NXT;
    for(vector <int>::iterator IT=V[w].begin(); IT!=V[w].end(); IT++){
        V[q].push_back((*IT));
        tt=sm[q].find((*IT));
        if(tt!=sm[q].end()){
            sm[q].erase(tt);
        }
        msh[(*IT)]=q;
    }
    V[w].clear();
 
 
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• Subtask 1: 1 / 1
• Subtask 2: 16 / 16
• Subtask 3: 83 / 83