oj.uz

Submission #152390

# Submission time Handle Problem Language Result Execution time Memory
152390 2019-09-07T20:57:50 Z sofhiasouza Poklon (COCI17_poklon7) C++14
114 / 120
 930 ms 262148 KB 
#include <bits/stdc++.h>
#define pb push_back
using namespace std;

const int maxn = 4e6+10;

int n, cont, qtdz, val[maxn];

vector < int > grafo[maxn];
vector < bool >resp;

void dfs(int u, int niv)
{
	if(!grafo[u].size())
	{
		vector < bool > aux;

		int flag = 0;
		for(int i = 31 ; i >= 0 ; i--)
		{
			if(val[u]&(1 << i))
			{
				flag = 1;
				aux.pb(1);
			}
			else if(flag) aux.pb(0);
		}

		if(aux.size()+niv > resp.size()+qtdz)
		{
			resp.clear();
			qtdz = niv;
			for(int i = 0 ; i < aux.size() ; i++) resp.pb(aux[i]);
		}
		else if(aux.size()+niv == resp.size()+qtdz)
		{
			for(int i = 0 ; i < aux.size() and i < resp.size() ; i++)
			{
				if(resp[i] > aux[i]) return;
				else if(resp[i] < aux[i])
				{
					resp.clear();
					qtdz = niv;
					for(int j = 0 ; j < aux.size() ; j++) resp.pb(aux[j]);
					return;
				}
			}
			if(aux.size() > resp.size())
			{
				resp.clear();
				qtdz = niv;
				for(int j = 0 ; j < aux.size() ; j++) resp.pb(aux[j]);
				return;
			}
		}

		return;
	}
	for(int i = 0 ; i < grafo[u].size() ; i++)
	{
		int v = grafo[u][i];
		dfs(v, niv+1);
	}
}

int main()
{
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	cout.tie(nullptr);

	cin >> n;

	cont = n;
	for(int i = 1 ; i <= n ; i++)
	{
		int a, b;
		cin >> a >> b;
	
		if(a < 0)
		{
			cont++;
			val[cont] = a*(-1);
			grafo[i].pb(cont);
		}
		else grafo[i].pb(a);

		if(b < 0)
		{
			cont++;
			val[cont] = b*(-1);
			grafo[i].pb(cont);
		}
		else grafo[i].pb(b);
	}

	dfs(1, 0);

	for(int i = 0 ; i < resp.size() ; i++) cout << resp[i];
	for(int i = 0 ; i < qtdz ; i++) cout << 0;
	cout << "\n";
}

Compilation message

poklon.cpp: In function 'void dfs(int, int)':
poklon.cpp:33:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(int i = 0 ; i < aux.size() ; i++) resp.pb(aux[i]);
                    ~~^~~~~~~~~~~~
poklon.cpp:37:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(int i = 0 ; i < aux.size() and i < resp.size() ; i++)
                    ~~^~~~~~~~~~~~
poklon.cpp:37:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(int i = 0 ; i < aux.size() and i < resp.size() ; i++)
                                       ~~^~~~~~~~~~~~~
poklon.cpp:44:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
      for(int j = 0 ; j < aux.size() ; j++) resp.pb(aux[j]);
                      ~~^~~~~~~~~~~~
poklon.cpp:52:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int j = 0 ; j < aux.size() ; j++) resp.pb(aux[j]);
                     ~~^~~~~~~~~~~~
poklon.cpp:59:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0 ; i < grafo[u].size() ; i++)
                  ~~^~~~~~~~~~~~~~~~~
poklon.cpp: In function 'int main()':
poklon.cpp:99:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0 ; i < resp.size() ; i++) cout << resp[i];
                  ~~^~~~~~~~~~~~~

Subtask #1
114.0 / 120.0

# Verdict Execution time Memory Grader output
1 Correct 88 ms 94328 KB Output is correct
2 Correct 88 ms 94328 KB Output is correct
3 Correct 89 ms 94304 KB Output is correct
4 Correct 88 ms 94328 KB Output is correct
5 Correct 88 ms 94200 KB Output is correct
6 Correct 89 ms 94300 KB Output is correct
7 Correct 88 ms 94328 KB Output is correct
8 Correct 89 ms 94220 KB Output is correct
9 Correct 89 ms 94308 KB Output is correct
10 Correct 90 ms 94300 KB Output is correct
11 Correct 97 ms 95608 KB Output is correct
12 Correct 98 ms 95480 KB Output is correct
13 Correct 134 ms 100856 KB Output is correct
14 Correct 177 ms 107640 KB Output is correct
15 Correct 174 ms 98432 KB Output is correct
16 Correct 382 ms 129144 KB Output is correct
17 Correct 784 ms 167860 KB Output is correct
18 Correct 792 ms 175716 KB Output is correct
19 Correct 930 ms 161656 KB Output is correct
20 Runtime error 611 ms 262148 KB Execution killed with signal 9 (could be triggered by violating memory limits)