Submission #606003

#	Time	Username	Problem	Language	Result	Execution time	Memory
606003		polya	Stations (IOI20_stations)	C++17	0 / 100	1 ms	428 KiB

stations

#include "stations.h"
#include <vector>
 
using namespace std;
 
vector<int> adj[1004];
vector<int> labels;
int cnt = 0;
 
int dfs(int nn) {
    if (labels[nn] != 10000) return 0;
	labels[nn] = cnt++;
	for (auto &ii : adj[nn]) dfs(ii);
}
 
vector<int> label(int n, int k, vector<int> u, vector<int> v) {
	labels.resize(n, 10000);
	for (int i=0; i<n-1; i++) {
		adj[u[i]].emplace_back(v[i]);
      adj[v[i]].emplace_back(u[i]);
	}
	for (int i=0; i<n; i++) {
		if (adj[i].size() == 1) dfs(i);
	}
    return labels;
}
 
int find_next_station(int s, int t, std::vector<int> c) {
	if (s < t) return s+1;
	else return s-1;
}

Compilation message (stderr)

stations.cpp: In function 'int dfs(int)':
stations.cpp:14:1: warning: control reaches end of non-void function [-Wreturn-type]
   14 | }
      | ^

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