Submission #590230

#	Time	Username	Problem	Language	Result	Execution time	Memory
590230		fuad27	Stations (IOI20_stations)	C++17	10 / 100	993 ms	644 KiB

stations

#include "stations.h"
#include <vector>
#include<bits/stdc++.h>
using namespace std;
#define pb push_back
const int N = 1010;
typedef long long ll;
vector<int> g[N];
vector<int> tin, tout;
int cnt=0;
void dfs(int at, int p) {
	tin[at]=++cnt;
	for(int to:g[at]) {
		if(to != p)dfs(to, at);
	}
	tout[at]=++cnt;
}
std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
	cnt=0;
	tin.clear();
	tout.clear();
	tin.resize(n);
	tout.resize(n);
	for(int i = 0;i<n-1;i++) {
		g[u[i]].pb(v[i]);
		g[v[i]].pb(u[i]);
	}
	dfs(0, 0);
	for(int i = 0;i<n;i++) {
		tin[i]--;
		tout[i]--;
	}
	vector<int> l(n);  
	for(int i = 0;i<n;i++) {
		l[i]=(2*1000-1)*tin[i]+tout[i];
	}
	for(int i = 0;i<=n;i++)g[i].clear(); 
	return l;
}
int find_next_station(int s, int t, std::vector<int> c) {
	int k =0;
	for(int i=0;i<(int)c.size();i++) {
		if(s%(2000-1) <= c[i]%(2000-1) and s/(2000-1) >= c[i]/(2000-1)){
			k=c[i];
			continue;
		}
		if((c[i]%(2000-1)) >= t%(2000-1) and c[i]/(2000-1) <= t/(2000-1))return c[i];
	}
	return k;
}

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