Submission #432417

#	Time	Username	Problem	Language	Result	Execution time	Memory
432417		milleniumEeee	Stations (IOI20_stations)	C++17	0 / 100	926 ms	792 KiB

stations

#ifndef EVAL
#include "stub.cpp"
#endif
#include "stations.h"
 
#include <bits/stdc++.h>
#define fr first
#define sc second
#define pii pair<int, int>
#define pb push_back
#define szof(s) (int)s.size()
#define all(s) s.begin(), s.end()
 
using namespace std;
 
const int MAXN = 2005;
 
vector <int> G[MAXN]; // binary tree
vector <int> g[MAXN]; // cur component
 
void clean() {
	for (int i = 0; i < MAXN; i++) {
		g[i].clear();
	}
}
 
vector<int> label(int n, int k, vector<int> u, vector<int> v) {
	clean();
	set <int> id;
	for (int i = 0; i < n; i++) {
		id.insert(i);
	}
	vector <int> cnt(n, 0);
	int center = 0;
	for (int i = 0; i <= n - 2; i++) {
		int x = u[i];
		int y = v[i];
		cnt[x]++;
		cnt[y]++;
		if (cnt[x] >= 2) {
			center = x;
		}
		if (cnt[y] >= 2) {
			center = y;
		}
	}
	vector <int> labels(n);
	for (int i = 0; i < n; i++) {
		if (center == i) {
			labels[i] = 0;
			id.erase(0);
		} else {
			auto it = --id.end();
			labels[i] = *it;
			id.erase(it);
		}
	}
	return labels;
}
 
int find_next_station(int s, int t, vector<int> c) {
	if (s == 0) {
		return t;
	} else {
		return c[0];
	}
}

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