oj.uz

Submission #927789

# Submission time Handle Problem Language Result Execution time Memory
927789 2024-02-15T10:43:03 Z bachhoangxuan Park (JOI17_park) C++17
100 / 100
 270 ms 940 KB 
#include "park.h"
#include<bits/stdc++.h>
using namespace std;
const int maxn=1405;

namespace park{
    int N,Place[maxn],vis[maxn],a[maxn];
    vector<int> edge[maxn];
    void add(int u){
        while(true){
            memset(Place,0,sizeof(Place));
            for(int i=0;i<N;i++) Place[i]=a[i];
            Place[u]=true;
            if(Ask(0,u,Place)) break;
            int l=0,r=N-1,v=-1;
            while(l<=r){
                int mid=(l+r)>>1;
                memset(Place,0,sizeof(Place));
                for(int i=0;i<N;i++) Place[i]=(a[i] || i<=mid);
                Place[u]=1;
                if(Ask(0,u,Place)) v=mid,r=mid-1;
                else l=mid+1;
            }
            add(v);
        }
        vector<int> root;
        root.push_back(0);
        while(!root.empty()){
            int x=root.back();root.pop_back();
            if(a[x]==3) continue;
            memset(vis,0,sizeof(vis));
            vector<int> d;
            function<void(int)> dfs = [&](int u){
                vis[u]=1;
                d.push_back(u);
                for(int v:edge[u]) if(!vis[v] && a[v]!=3) dfs(v);
            };
            dfs(x);
            memset(Place,0,sizeof(Place));
            for(int v:d) Place[v]=1;
            Place[u]=1;
            if(!Ask(min(u,x),max(u,x),Place)) continue;

            int l=0,r=(int)d.size()-1,v=-1;
            while(l<=r){
                int mid=(l+r)>>1;
                memset(Place,0,sizeof(Place));
                for(int i=0;i<=mid;i++) Place[d[i]]=1;
                Place[u]=1;
                if(Ask(min(u,x),max(u,x),Place)) v=d[mid],r=mid-1;
                else l=mid+1;
            }

            for(int nxt:edge[v]) if(a[nxt]!=3) root.push_back(nxt);

            edge[u].push_back(v);
            edge[v].push_back(u);
            Answer(min(u,v),max(u,v));
            a[v]=3;

        }
        for(int i=0;i<N;i++) a[i]=(a[i] || (i==u));
    }
    void Detect(int T, int n) {
        a[0]=1;N=n;
        for(int i=1;i<N;i++) if(!a[i]) add(i);
    }
}


void Detect(int T, int N) {
	park::Detect(T,N);
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 7 ms 348 KB Output is correct
3 Correct 6 ms 348 KB Output is correct
4 Correct 20 ms 348 KB Output is correct
5 Correct 58 ms 536 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 270 ms 928 KB Output is correct
2 Correct 121 ms 600 KB Output is correct
3 Correct 148 ms 600 KB Output is correct
4 Correct 267 ms 940 KB Output is correct
5 Correct 264 ms 600 KB Output is correct

Subtask #3
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 124 ms 612 KB Output is correct
2 Correct 129 ms 588 KB Output is correct
3 Correct 135 ms 764 KB Output is correct
4 Correct 120 ms 612 KB Output is correct
5 Correct 149 ms 628 KB Output is correct
6 Correct 135 ms 860 KB Output is correct
7 Correct 127 ms 596 KB Output is correct
8 Correct 133 ms 848 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 73 ms 580 KB Output is correct
2 Correct 179 ms 592 KB Output is correct
3 Correct 171 ms 604 KB Output is correct
4 Correct 188 ms 580 KB Output is correct
5 Correct 195 ms 600 KB Output is correct
6 Correct 209 ms 600 KB Output is correct
7 Correct 206 ms 600 KB Output is correct
8 Correct 172 ms 592 KB Output is correct
9 Correct 172 ms 608 KB Output is correct
10 Correct 196 ms 848 KB Output is correct
11 Correct 192 ms 628 KB Output is correct
12 Correct 162 ms 612 KB Output is correct
13 Correct 220 ms 604 KB Output is correct
14 Correct 180 ms 604 KB Output is correct
15 Correct 242 ms 604 KB Output is correct
16 Correct 136 ms 844 KB Output is correct
17 Correct 262 ms 648 KB Output is correct
18 Correct 193 ms 628 KB Output is correct
19 Correct 237 ms 880 KB Output is correct
20 Correct 181 ms 596 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 226 ms 600 KB Output is correct
2 Correct 207 ms 844 KB Output is correct
3 Correct 164 ms 828 KB Output is correct
4 Correct 198 ms 612 KB Output is correct
5 Correct 225 ms 628 KB Output is correct
6 Correct 256 ms 680 KB Output is correct
7 Correct 221 ms 608 KB Output is correct
8 Correct 217 ms 664 KB Output is correct
9 Correct 207 ms 640 KB Output is correct
10 Correct 172 ms 632 KB Output is correct
11 Correct 186 ms 640 KB Output is correct
12 Correct 218 ms 648 KB Output is correct
13 Correct 174 ms 600 KB Output is correct
14 Correct 219 ms 604 KB Output is correct
15 Correct 191 ms 600 KB Output is correct
16 Correct 134 ms 600 KB Output is correct
17 Correct 262 ms 700 KB Output is correct
18 Correct 182 ms 620 KB Output is correct