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Submission #1078449

# Submission time Handle Problem Language Result Execution time Memory
1078449 2024-08-27T17:33:53 Z Trumling Stations (IOI20_stations) C++14
0 / 100
 619 ms 684 KB 
#include "stations.h"
#include <vector>
#include <bits/stdc++.h>
using namespace std; 

typedef long long ll;
#define pb push_back
#define F first
#define S second
#define enter cout<<'\n';
#define INF 99999999999999999
#define MOD 1000000007
#define all(x) x.begin(),x.end()

vector<vector<ll>>g;
vector<int> labels;

void dfs(int start,int pre)
{
	labels[start]=(1<<start);
	for(auto x:g[start])
		if(x!=pre)
		{
			dfs(x,start);
			labels[start]|=labels[x];
		}
}

std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
	
	
	g.assign(n,vector<ll>());
	labels.assign(n,0);
	for (int i = 0; i < n-1; i++) {
		g[u[i]].pb(v[i]);
		g[v[i]].pb(u[i]);
	}
	dfs(0,0);
	for(int i=0;i<n;i++)
		labels[i]+=i*256;
	

	return labels;
}

int find_next_station(int s, int t, vector<int> c) {
	
	ll S=s/256;
	ll T=t/256;

	ll par;
	for(auto x:c)
	{
		if((1<<S)&x)
			par=x;

		if((1<<T)&x)	
			return x;
	}

	return par;

}

Compilation message

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:61:9: warning: 'par' may be used uninitialized in this function [-Wmaybe-uninitialized]
   61 |  return par;
      |         ^~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 344 KB Invalid labels (values out of range). scenario=0, k=1000, vertex=0, label=1023
2 Halted 0 ms 0 KB -

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 568 KB Invalid labels (values out of range). scenario=0, k=1000, vertex=0, label=-1
2 Halted 0 ms 0 KB -

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 600 KB Invalid labels (values out of range). scenario=1, k=1000000, vertex=0, label=-1
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 619 ms 684 KB Output is correct
2 Incorrect 458 ms 684 KB Wrong query response.
3 Halted 0 ms 0 KB -

Subtask #5
0 / 61.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 600 KB Invalid labels (values out of range). scenario=1, k=1000000000, vertex=0, label=-1
2 Halted 0 ms 0 KB -