Submission #885264

#	Time	Username	Problem	Language	Result	Execution time	Memory
885264		epicci23	Stations (IOI20_stations)	C++17	0 / 100	611 ms	916 KiB

stations

#include "stations.h"
#include "bits/stdc++.h"
using namespace std;
#define pb push_back
typedef long long ll;

vector<int> v[1005];
int ti=0,ttin[1005],ttout[1005];

void dfs(int c,int p){
  ttin[c]=++ti;
  for(int x:v[c]){
    if(x==p) continue;
    dfs(x,c);
  }
  ttout[c]=ti;
}
	

vector<int> label(int n, int k,vector<int> u,vector<int> w){
  
  for(int i=0;i<1005;i++) v[i].clear();
  
  vector<int> res(n);
  for(int i=0;i<n-1;i++){
    v[u[i]].pb(w[i]);
    v[w[i]].pb(u[i]);
  }



  dfs(0,0);
  
  for(int i=0;i<n;i++) res[i]=1000*ttin[i]+ttout[i];
  return res;
}

int find_next_station(int s,int t,vector<int> c) {
  int sin,sout,tin,tout;
  sout=s%1000;
  sin=s/1000;
  tout=t%1000;
  tin=t/1000;
  
  if(sin<=tin && tout<=sout){
	for(int x:c){
	  int xin,xout;
	  xout=x%1000;
	  xin=x/1000;
	  if(xin<=tin && tout<=xout) return x;
	}
  }

  return c[0];
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 8
• Subtask 3: 0 / 16
• Subtask 4: 0 / 10
• Subtask 5: 0 / 61