oj.uz

Submission #521439

# Submission time Handle Problem Language Result Execution time Memory
521439 2022-02-02T06:41:16 Z azberjibiou Park (JOI17_park) C++17
67 / 100
 300 ms 752 KB 
#include "park.h"
#include <bits/stdc++.h>
using namespace std;

int N;
static int Place[1400];
bool Chk[1400];
int now;
vector <int> new_check;
vector <int> to_check;
vector <int> v[1400];
void solv(int s, int e)
{
    for(int i=s;i<=e;i++)   Place[to_check[i]]=0;
    int val=Ask(0, now, Place);
    if(val==1)  return;
    for(int i=s;i<=e;i++)   Place[to_check[i]]=1;
    if(s==e)
    {
        new_check.push_back(to_check[s]);
        return;
    }
    int mid=(s+e)/2;
    solv(s, mid);
    solv(mid+1, e);
}
bool cmp1(int a, int b)
{
    Place[a]=0;
    int val=Ask(0, b, Place);
    Place[a]=1;
    return val==0;
}
vector <int> tree[1400];
vector <int> euler;
void dfs(int now, int pre)
{
    euler.push_back(now);
    for(int nxt : tree[now])   if(nxt!=pre)
    {
        dfs(nxt, now);
        euler.push_back(now);
    }
}int solv_par(int now)
{
    euler.clear();
    dfs(0, -1);
    int s=0, e=euler.size()-1;
    for(int i=0;i<N;i++)    Place[i]=0;
    Place[now]=1;
    while(s!=e)
    {
        int mid=(s+e)/2;
        for(int i=s;i<=mid;i++) Place[euler[i]]=1;
        int val=Ask(min(now, euler[s]), max(now, euler[s]), Place);
        for(int i=s;i<=mid;i++) Place[euler[i]]=0;
        if(val==0)  s=mid+1;
        else    e=mid;
    }
    for(int i=0;i<N;i++)    Place[i]=1;
    tree[now].push_back(euler[s]);
    tree[euler[s]].push_back(now);
    v[now].push_back(euler[s]);
    v[euler[s]].push_back(now);
    return euler[s];
}
int solv_par_0(int now)
{
    euler.clear();
    dfs(0, -1);
    for(int i=0;i<N;i++)    Place[i]=0;
    Place[now]=1;
    set <int> s;
    s.insert(euler.size());
    vector <int> adj;
    int cur=0;
    while(!s.empty())
    {
        int nxt=*s.begin();
        s.erase(nxt);
        if(cur==nxt)
        {
            cur++;
            continue;
        }
        for(int i=cur;i<=nxt-1;i++) Place[euler[i]]=1;
        int check_val=Ask(min(now, euler[cur]), max(now, euler[cur]), Place);
        for(int i=cur;i<=nxt-1;i++) Place[euler[i]]=0;
        if(check_val==0)
        {
            cur=nxt+1;
            continue;
        }
        s.insert(nxt);
        int l=cur, r=nxt-1;
        while(l!=r)
        {
            int mid=(l+r)/2;
            for(int i=l;i<=mid;i++) Place[euler[i]]=1;
            int val=Ask(min(now, euler[l]), max(now, euler[l]), Place);
            for(int i=l;i<=mid;i++) Place[euler[i]]=0;
            if(val==1)  r=mid;
            else    l=mid+1;
        }
        for(int i=l+1;i<euler.size();i++) if(euler[i]==euler[l])  s.insert(i);
        adj.push_back(euler[l]);
        cur=l+1;
    }
    tree[now].push_back(adj[0]);
    tree[adj[0]].push_back(now);
    for(int ele : adj)
    {
        v[ele].push_back(now);
        v[now].push_back(ele);
    }
}
void Detect(int T, int n) {
    N=n;
    Chk[0]=true;
    for(int i=1;i<N;i++)    to_check.push_back(i);
    while(!to_check.empty())
    {
        for(int i=0;i<N;i++)    Place[i]=1;
        now=to_check.back();
        to_check.pop_back();
        new_check.push_back(now);
        if(!to_check.empty())   solv(0, to_check.size()-1);
        sort(new_check.begin(), new_check.end(), cmp1);
        for(int ele : new_check)    solv_par(ele);
        for(int ele : new_check)    Chk[ele]=true;
        new_check.clear();
        to_check.clear();
        for(int i=0;i<N;i++)    if(!Chk[i]) to_check.push_back(i);
    }
    for(int i=0;i<N;i++)
    {
        for(int ele : v[i]) if(ele<i)   Answer(ele, i);
    }
}

Compilation message

park.cpp: In function 'int solv_par_0(int)':
park.cpp:105:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  105 |         for(int i=l+1;i<euler.size();i++) if(euler[i]==euler[l])  s.insert(i);
      |                       ~^~~~~~~~~~~~~
park.cpp:116:1: warning: no return statement in function returning non-void [-Wreturn-type]
  116 | }
      | ^

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 332 KB Wrong Answer[6]
2 Halted 0 ms 0 KB -

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 287 ms 524 KB Output is correct
2 Correct 119 ms 540 KB Output is correct
3 Correct 155 ms 580 KB Output is correct
4 Correct 300 ms 580 KB Output is correct
5 Correct 290 ms 752 KB Output is correct

Subtask #3
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 154 ms 468 KB Output is correct
2 Correct 158 ms 512 KB Output is correct
3 Correct 169 ms 536 KB Output is correct
4 Correct 165 ms 708 KB Output is correct
5 Correct 182 ms 548 KB Output is correct
6 Correct 159 ms 580 KB Output is correct
7 Correct 155 ms 488 KB Output is correct
8 Correct 167 ms 628 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 83 ms 452 KB Output is correct
2 Correct 197 ms 548 KB Output is correct
3 Correct 193 ms 496 KB Output is correct
4 Correct 224 ms 492 KB Output is correct
5 Correct 199 ms 544 KB Output is correct
6 Correct 187 ms 504 KB Output is correct
7 Correct 230 ms 660 KB Output is correct
8 Correct 195 ms 496 KB Output is correct
9 Correct 199 ms 484 KB Output is correct
10 Correct 199 ms 664 KB Output is correct
11 Correct 201 ms 492 KB Output is correct
12 Correct 182 ms 496 KB Output is correct
13 Correct 241 ms 708 KB Output is correct
14 Correct 186 ms 544 KB Output is correct
15 Correct 243 ms 580 KB Output is correct
16 Correct 162 ms 496 KB Output is correct
17 Correct 271 ms 536 KB Output is correct
18 Correct 190 ms 520 KB Output is correct
19 Correct 247 ms 580 KB Output is correct
20 Correct 202 ms 488 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 194 ms 548 KB Wrong Answer[6]
2 Halted 0 ms 0 KB -