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Submission #140431

# Submission time Handle Problem Language Result Execution time Memory
140431 2019-08-02T21:58:57 Z arthurconmy Highway Tolls (IOI18_highway) C++14
5 / 100
 38 ms 780 KB 
#include <bits/stdc++.h>
#ifndef ARTHUR_LOCAL
	#include "highway.h"
#endif

using namespace std;

using ll = long long;

const int MAXN = 100;
int parent[MAXN];
int par_edge[100];
vector<pair<int,int>> adj[100];

void dfs(int v)
{
	for(auto u:adj[v])
	{
		if(parent[u.first]!=-1) continue;

		parent[u.first]=v;
		par_edge[u.first]=u.second;
		dfs(u.first);
	}
}

void find_pair(int n, vector<int> U, vector<int> V, int A, int B)
{
	for(int i=0; i<n; i++) parent[i]=-1;

	for(int i=0; i<n-1; i++)
	{
		adj[U[i]].push_back({V[i],i});
		adj[V[i]].push_back({U[i],i});
	}

	dfs(0);

	vector<int> askin(n-1);

	ll base = ask(askin);

	vector<ll> anss(n);
	ll max_cur=0;

	for(int i=1; i<n; i++)
	{
		for(int j=0; j<n-1; j++) askin[j]=0;

		int i_copy = i;

		while(i_copy != 0)
		{
			askin[par_edge[i_copy]]=1;
			i_copy=parent[i_copy];
		}

		ll cur = ask(askin);

		anss[i]=cur;
		max_cur=max(max_cur,cur);
	}

	for(int i=0; i<n; i++)
	{
		if(anss[i]==max_cur && anss[parent[i]]!=max_cur) answer(0,i);
	}
}

Compilation message

highway.cpp: In function 'void find_pair(int, std::vector<int>, std::vector<int>, int, int)':
highway.cpp:41:5: warning: unused variable 'base' [-Wunused-variable]
  ll base = ask(askin);
     ^~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 248 KB Output is correct
2 Correct 3 ms 248 KB Output is correct
3 Correct 3 ms 248 KB Output is correct
4 Correct 3 ms 248 KB Output is correct
5 Correct 3 ms 248 KB Output is correct
6 Correct 3 ms 376 KB Output is correct
7 Correct 3 ms 296 KB Output is correct
8 Correct 3 ms 248 KB Output is correct
9 Correct 3 ms 248 KB Output is correct
10 Correct 3 ms 248 KB Output is correct
11 Correct 3 ms 248 KB Output is correct
12 Correct 4 ms 248 KB Output is correct

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Runtime error 3 ms 504 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #3
0 / 6.0

# Verdict Execution time Memory Grader output
1 Runtime error 38 ms 776 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #4
0 / 33.0

# Verdict Execution time Memory Grader output
1 Runtime error 3 ms 504 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #5
0 / 18.0

# Verdict Execution time Memory Grader output
1 Runtime error 14 ms 780 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #6
0 / 31.0

# Verdict Execution time Memory Grader output
1 Runtime error 19 ms 760 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -