Submission #616077

#	Time	Username	Problem	Language	Result	Execution time	Memory
616077		John3_141592	Stations (IOI20_stations)	C++14	5 / 100	998 ms	664 KiB

stations

#include "stations.h"
#include <bits/stdc++.h>
 
using namespace std;
 
int arr[1003];
vector <int> grafo[1003];
bool vis[1003];
 
void dfs(int node,int c){
    vis[node]=true,arr[node]=c;
    for(auto i:grafo[node]) if(!vis[i]) dfs(i,c+1);
}
 
std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
    for(int i=0;i<=n;i++) grafo[i].clear();
	for(int i=0;i<n-1;i++) grafo[u[i]].push_back(v[i]),grafo[v[i]].push_back(u[i]);
	int node;
	for(int i=0;i<n;i++){
        if(grafo[i].size()==1){
            node=i;
            break;
        }
	}
	fill(vis,vis+n+5,0);
	fill(arr,arr+n+5,0);
	dfs(node,0);
	vector <int> solve;
	for(int i=0;i<n;i++) solve.push_back(arr[i]);
	return solve;
}
 
int find_next_station(int s, int t, std::vector<int> c) {
    if(c.size()==1) return c[0];
    if(s<t) return c[1];
    return c[0];
}

Compilation message (stderr)

stations.cpp: In function 'std::vector<int> label(int, int, std::vector<int>, std::vector<int>)':
stations.cpp:18:6: warning: 'node' may be used uninitialized in this function [-Wmaybe-uninitialized]
   18 |  int node;
      |      ^~~~

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