제출 #1064021

#제출 시각아이디문제언어결과실행 시간메모리
1064021new_acc기지국 (IOI20_stations)C++14
0 / 100
3048 ms2097152 KiB
#include "stations.h" #include<bits/stdc++.h> #define fi first #define se second using namespace std; typedef vector<int> vi; const int N=1e3+10; vi graf[N]; int val[N],li,kol[N]; void dfs(int v,int o){ li++; if(!kol[v]) val[v]=li; for(auto u:graf[v]){ if(u==o) continue; kol[u]=kol[v]^1; dfs(u,v); } li++; if(kol[v]) val[v]=li; } vi label(int n, int k, vi a,vi b) { for(int i=0;i<n;i++) graf[a[i]].push_back(b[i]),graf[b[i]].push_back(a[i]); dfs(0,0); vector<pair<int,int>> v; for(int i=0;i<n;i++) v.push_back({val[i],i}); sort(v.begin(),v.end()); vi res(n); for(int i=0;i<n;i++) res[v[i].se]=i; return res; } int find_next_station(int s,int t,vi c) { if(c.size()==1) return c[0]; if(c[0]>s){ // pre if(s==0){ for(auto u:c){ if(u>=t) return u; } return 0; } if(t>=s and t<=c[c.size()-2]){ for(auto u:c){ if(u>=t) return u; } }return c[c.size()-1]; }else{ if(t>c[0] and t<=c[c.size()-1]){ int ost=0; for(int i=1;i<(int)c.size();i++){ if(t>=c[i]) ost=c[i]; } return ost; }else return c[0]; } }
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