Submission #424062

#	Time	Username	Problem	Language	Result	Execution time	Memory
424062		Supersonic	Stations (IOI20_stations)	C++14	0 / 100	1150 ms	512 KiB

stations

#include "stations.h"
#include <bits/stdc++.h>
using namespace std;
vector<int> g[1005];int l[1005];
int d(int n,int a,int s,bool p){
	int c=1;int f=s;
	for(auto i:g[n])if(i!=a){c+=d(i,n,f,!p);f=i;}
	if(p)l[n]=s+c;
	else l[n]=s-c;
	return c;
}
std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
	for(int i=0;i<n-1;i++){g[u[i]].push_back(v[i]);g[v[i]].push_back(u[i]);}
	k=d(0,n,n,0);vector<int> r;
	for(int i=0;i<n;i++){r.push_back(l[i]);g[i].clear();}
	return r;
}

int find_next_station(int s, int t, std::vector<int> c) {
	if(s<c[0]){
		if(t<s||t>=c.back())return c.back();
		for(auto i:c)if(t<=i)return i;
	}
	else{
		reverse(c.begin(),c.end());
		if(t>s||t<=c.back())return c.back();
		for(auto i:c)if(t>=i)return i;
	}
	exit(1);
}

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