Submission #955076

#	Time	Username	Problem	Language	Result	Execution time	Memory
955076		Trisanu_Das	Stations (IOI20_stations)	C++17	16 / 100	622 ms	1556 KiB

stations

#include "stations.h"
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
vector<int> adj[1001], col;
int lab = 0;
void dfs(int s, int p, int lab){
	col[s]=lab;
	for(auto u : adj[s]) if(u!=p) dfs(u,s,lab+1);
}
 
vector<int> label(int n, int k, vector<int> a, vector<int> b)
{
    col.resize(n,0); lab = 0;
    for(int i = 0; i < n; i++) adj[i].clear();
	for (int i = 0; i < n-1; i++) adj[a[i]].pb(b[i]), adj[b[i]].pb(a[i]);
  	int ind = 0, x=1;
  	for(int i = 0; i < n; i++) if(adj[i].size()>=3) ind = i;
  	for(auto u : adj[ind]) dfs(u,ind,x*1000),x++; col[ind]=0; return col;
}
 
int fi(int x){ return x/1000; }
int find_next_station(int s, int t, vector<int> c){
	if(c.size()==1 or t==0) return c[0];
  	if(s==0) for(auto u : c) if(fi(u)==fi(t)) return u;
  	if(fi(s)!=fi(t)) return c[0];
  	return c[s<t];
}

Compilation message (stderr)

stations.cpp: In function 'std::vector<int> label(int, int, std::vector<int>, std::vector<int>)':
stations.cpp:19:4: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   19 |    for(auto u : adj[ind]) dfs(u,ind,x*1000),x++; col[ind]=0; return col;
      |    ^~~
stations.cpp:19:50: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   19 |    for(auto u : adj[ind]) dfs(u,ind,x*1000),x++; col[ind]=0; return col;
      |                                                  ^~~

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