Submission #926696

#	Time	Username	Problem	Language	Result	Execution time	Memory
926696		ByeWorld	기지국 (IOI20_stations)	C++14	0 / 100	3 ms	616 KiB

stations

#include "stations.h"
#include <vector>
#include <bits/stdc++.h>
#define fi first
#define se second
#define pb push_back
using namespace std;
typedef pair<int,int> pii;
typedef pair<pii,int> ipii;
const int MAXN = 2e3+10;

int n, k;
vector <int> adj[MAXN];

vector <int> vec; int dep[MAXN];
void make(int id, int par, int dp){
	vec.pb(id); dep[id] = dp;
	for(auto in : adj[id]){
		if(in == par) continue;
		make(in, id, dp+1);
	}
}

vector<int> label(int N, int K, vector<int> u, vector<int> v) {
	n = N; k = K;
	vec.clear();
	for(int i=0; i<=n; i++){
		adj[i].clear(); dep[i] = -1;
	}

	for(int i=0; i<n-1; i++){
		adj[u[i]].pb(v[i]); adj[v[i]].pb(u[i]);
	}

	for(int i=0; i<n; i++){
		if(adj[i].size() != 1) continue;
		make(i, -1, 0);
		break;
	}
	// for(int i=0; i<n; i++){
	// 	for(int j=0; j<n; j++){
	// 		if(i!=j && dep[i]==dep[j]) assert(false);
	// 	}
	// }
	vector<int> labels(n);
	for (int i = 0; i < n; i++) {
		labels[i] = 0;
	}
	// for(auto in : vec) cout << in << " p\n";
	// for(int i=0; i<n; i++) cout << i << ' ' << dep[i] << " xx\n";
	return labels;
}

int find_next_station(int s, int t, vector<int> c) {
	//if(s>=n || t>=n) assert(0);

	if(dep[s] < dep[t]){
		return vec[dep[s] + 1];
	} else {
		if(dep[t] == 0) assert(0);
		return vec[dep[s] - 1];
	}
}

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