Submission #605866

#	Time	Username	Problem	Language	Result	Execution time	Memory
605866		polya	Stations (IOI20_stations)	C++14	Compilation error	0 ms	0 KiB

stations

#include "stations.h"
#include <vector>
 
using namespace std;
 
vector<int> adj[1004];
vector<int> labels;
bool vis[1004];
int cnt = 0;
 
void dfs(int n) {
    if (vis[n]) return;
	labels[n] = cnt++, vis[n] = true;
	for (auto &i : adj[n]) dfs(i);
}
 
vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
	labels.resize(n, -1);
	for (int i=0; i<u.size(); i++) {
		adj[u[i]].push_back(v[i]), adj[v[i]].push_back(u[i]);
	}
	for (int i=0; i<n; i++) {
		if (adj[i].size() == 1) dfs(i);
	}
    vector<int> ans = labels
    return ans;
}
 
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 'std::vector<int> label(int, int, std::vector<int>, std::vector<int>)':
stations.cpp:19:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   19 |  for (int i=0; i<u.size(); i++) {
      |                ~^~~~~~~~~
stations.cpp:26:5: error: expected ',' or ';' before 'return'
   26 |     return ans;
      |     ^~~~~~
stations.cpp:27:1: warning: no return statement in function returning non-void [-Wreturn-type]
   27 | }
      | ^