Submission #586035

#	Time	Username	Problem	Language	Result	Execution time	Memory
586035		wdjpng	Stations (IOI20_stations)	C++17	0 / 100	783 ms	544 KiB

stations

#include<bits/stdc++.h>

#include "stations.h"

using namespace std;
#define rep(i,n) for(int i = 0; i<((int)n);i++)

int c;
vector<vector<int>>E;
vector<int>pre;
void dfs(int v, int p)
{
	pre[v]=c++;
	for(int w : E[v]) if(w!=p) dfs(w,v);
}

vector<int> label(int n, int k, std::vector<int> u, vector<int> v) {
	E=vector<vector<int>>(n);
	pre.assign(n,-1);
	c=0;
	rep(i,n-1) {E[u[i]].push_back(v[i]); E[v[i]].push_back(u[i]);}

	dfs(0,-1);

	return pre;
}

int find_next_station(int s, int t, vector<int> r) {
	vector<int>b=r;
	sort(b.begin(),b.end());
	rep(i,b.size()-1) if(b[i+1]>t) return b[i];
	return b[b.size()-1];
}

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