제출 #719360

#제출 시각아이디문제언어결과실행 시간메모리
719360mseebacher기지국 (IOI20_stations)C++17
0 / 100
846 ms548 KiB
#include "stations.h" #include <bits/stdc++.h> using namespace std; #define MAXI (int)1e3+10 vector<int> ad[MAXI]; vector<int> labels; // 1 .. 1e3 // 1e3+1 ... 2e3 void dfs(int x,int e){ if(e > 0){ labels[x] = labels[e]+1; } for(auto s: ad[x]){ if(s == e) continue; dfs(s,x); } } vector<int> label(int n, int k, vector<int> u, vector<int> v) { labels.assign(n,0); for(int i = 0;i<MAXI;i++) ad[i].clear(); for(int i = 0;i<n-1;i++){ ad[u[i]].push_back(v[i]); ad[v[i]].push_back(u[i]); } int start = 0; for(int i = 0;i<n;i++){ if(ad[i].size() >= 3){ start = i; break; } } int cnt = 0; for(auto s: ad[start]){ labels[s] = 1000*cnt; cnt++; } labels[start] = 1e6; dfs(start,-1); return labels; } int find_next_station(int s, int t, std::vector<int> c) { if(s == 1e6){ return c[t/1000]; }else{ if((s/1000)*1000 == (t/1000)*1000){ return t > s ? c[1] : c[0]; }else return c[0]; } return c[0]; }
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