Submission #348648

#TimeUsernameProblemLanguageResultExecution timeMemory
348648denkendoemeerFun Tour (APIO20_fun)C++14
66 / 100
231 ms18916 KiB
#include<bits/stdc++.h> #include "fun.h" using namespace std; vector<int>ans,av(3),dist,grup[3]; int cmp(int a,int b) { return dist[a]<dist[b]; } int cmp2(int a,int b) { return grup[a].size()>grup[b].size(); } int cmp3(int a,int b) { return dist[grup[a].back()]>dist[grup[b].back()]; } vector<int>createFunTour(int n,int q) { dist.resize(n); int cent=0,last=-1,i,j; for(i=1;i<n;i++) if (attractionsBehind(cent,i)>n/2) cent=i; for(i=0;i<n;i++) if (i!=cent) dist[i]=hoursRequired(i,cent); for(i=0;i<n;i++) if (i!=cent){ for(j=0;j<3;j++) if (grup[j].size()==0 || hoursRequired(grup[j][0],i)!=(dist[i]+dist[grup[j][0]]) || j==2){ grup[j].push_back(i); break; } } av[0]=0; av[1]=1; av[2]=2; for(i=0;i<3;i++) sort(grup[i].begin(),grup[i].end(),cmp); while(1){ sort(av.begin(),av.end(),cmp2); if (grup[av[0]].size()>=grup[av[1]].size()+grup[av[2]].size()) break; sort(av.begin(),av.end(),cmp3); if (last==av[0]) last=av[1]; else last=av[0]; ans.push_back(grup[last].back()); grup[last].pop_back(); } grup[av[1]].insert(grup[av[1]].end(),grup[av[2]].begin(),grup[av[2]].end()); sort(grup[av[1]].begin(),grup[av[1]].end(),cmp); int aux=0; if (ans.size()>1 && dist[ans.back()]<dist[grup[av[1]].back()]) aux=1; while(grup[av[aux]].size()){ ans.push_back(grup[av[aux]].back()); grup[av[aux]].pop_back(); aux=aux^1; } ans.push_back(cent); return ans; }
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