oj.uz

Submission #995946

# Submission time Handle Problem Language Result Execution time Memory
995946 2024-06-10T05:29:38 Z 12345678 Park (JOI17_park) C++17
77 / 100
 109 ms 856 KB 
#include "park.h"
#include <bits/stdc++.h>

using namespace std;

const int nx=1500;

static int Place[1400];

int n, pa[nx], used[nx], add[nx], l, r;
vector<int> d[nx], x;

void dfs(int u)
{
	x.push_back(u);
	for (auto v:d[u]) dfs(v);
}

void solve(int u)
{
	used[u]=1;
	for (int i=0; i<n; i++) Place[i]=used[i];
	if (Ask(0, u, Place)) return;
	int l=0, r=n-1;
	while (l<r)
	{
		int md=(l+r)/2;
		for (int i=0; i<n; i++) Place[i]=used[i];
		for (int i=0; i<=md; i++) Place[i]=1;
		if (Ask(0, u, Place)) r=md;
		else l=md+1;
	}
	pa[l]=pa[u];
	pa[u]=l;
	solve(l);
	solve(u);
}

void Detect(int T, int N) {
    if (N<=250)
    {
        for (int i=0; i<N; i++) 
        {
            Place[i]=1;
            for (int j=0; j<i; j++) 
            {
                Place[j]=1;
                if (Ask(j, i, Place)) Answer(j, i);
                Place[j]=0;
            }
            Place[i]=0;
        }
        return;
    }
	n=N;
	used[0]=add[0]=1;
	for (int i=1; i<N; i++) 
	{
		if (used[i]) continue;
		x.clear();
		dfs(0);
		l=0, r=x.size()-1;
		while (l<r)
		{
			int md=(l+r)/2;
			for (int j=0; j<N; j++) Place[j]=1;
			for (int j=md+1; j<x.size(); j++) Place[x[j]]=0;
			if (Ask(0, i, Place)) r=md;
			else l=md+1;
		}
		pa[i]=x[l];
		solve(i);
		int u=i;
		while (!add[u]) add[u]=1, d[pa[u]].push_back(u), u=pa[u];
	}
	//for (int i=1; i<N; i++) cout<<"pa "<<i<<' '<<pa[i]<<'\n';
	for (int i=1; i<N; i++) Answer(min(i, pa[i]), max(i, pa[i]));
}

Compilation message

park.cpp: In function 'void Detect(int, int)':
park.cpp:67:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   67 |    for (int j=md+1; j<x.size(); j++) Place[x[j]]=0;
      |                     ~^~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 4 ms 348 KB Output is correct
3 Correct 6 ms 604 KB Output is correct
4 Correct 4 ms 488 KB Output is correct
5 Correct 6 ms 348 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 101 ms 604 KB Output is correct
2 Correct 72 ms 600 KB Output is correct
3 Correct 70 ms 656 KB Output is correct
4 Correct 101 ms 604 KB Output is correct
5 Correct 103 ms 856 KB Output is correct

Subtask #3
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 66 ms 592 KB Output is correct
2 Correct 70 ms 848 KB Output is correct
3 Correct 74 ms 592 KB Output is correct
4 Correct 72 ms 344 KB Output is correct
5 Correct 74 ms 596 KB Output is correct
6 Correct 70 ms 592 KB Output is correct
7 Correct 87 ms 592 KB Output is correct
8 Correct 71 ms 348 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 36 ms 344 KB Output is correct
2 Correct 78 ms 584 KB Output is correct
3 Correct 83 ms 596 KB Output is correct
4 Correct 90 ms 596 KB Output is correct
5 Correct 98 ms 600 KB Output is correct
6 Correct 94 ms 600 KB Output is correct
7 Correct 93 ms 604 KB Output is correct
8 Correct 93 ms 592 KB Output is correct
9 Correct 90 ms 592 KB Output is correct
10 Correct 96 ms 604 KB Output is correct
11 Correct 109 ms 600 KB Output is correct
12 Correct 81 ms 608 KB Output is correct
13 Correct 98 ms 608 KB Output is correct
14 Correct 93 ms 600 KB Output is correct
15 Correct 100 ms 604 KB Output is correct
16 Correct 70 ms 348 KB Output is correct
17 Correct 102 ms 604 KB Output is correct
18 Correct 93 ms 608 KB Output is correct
19 Correct 100 ms 604 KB Output is correct
20 Correct 91 ms 592 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 90 ms 600 KB Wrong Answer[2]
2 Halted 0 ms 0 KB -