oj.uz

Submission #60649

# Submission time Handle Problem Language Result Execution time Memory
60649 2018-07-24T13:08:29 Z Diuven Park (JOI17_park) C++11
10 / 100
 86 ms 25928 KB 
#include "park.h"
#include <vector>
#include <algorithm>
#include <iostream>
#include <utility>
#include <assert.h>
#include <map>
using namespace std;
typedef pair<int, int> pii;

static int full[1400], empt[1400];

int n;

void add_edge(int x, int y){
    if(x>y) swap(x,y);
    assert(x!=y);
    Answer(x,y);
}
int my_ask(int a, int b, int Arr[]){
    if(a>b) swap(a,b);
    // cout<<a<<' '<<b<<'\n';
    assert(a!=b && Arr[a] && Arr[b]);
    return Ask(a,b,Arr);
}

void solve1(){
    int P[250]={};
    for(int i=0; i<n; i++)
        for(int j=i+1; j<n; j++){
            P[i]=P[j]=1;
            if(my_ask(i,j,P)) Answer(i,j);
            P[i]=P[j]=0;
        }
}

vector<int> G[1400];
int nu[1400], now;
bool done[1400];

void fill_line(int u, int v){
    // cout<<u<<' '<<v<<'\n';

    int Arr[1400]={};
    Arr[u]=Arr[v]=1;
    if(my_ask(u,v,Arr)){
        add_edge(u,v);
        G[u].push_back(v);
        G[v].push_back(u);
        return;
    }


    vector<int> W;
    for(int i=0; i<n; i++) if(!done[i]) W.push_back(i);
    int s=0, e=W.size()-1;
    while(s<e){
        int m=(s+e)/2;
        for(int i=0; i<=m; i++) Arr[W[i]]=1;
        int res=my_ask(u, v, Arr);
        for(int i=0; i<=m; i++) Arr[W[i]]=0;
        if(res) e=m;
        else s=m+1;
    }
    done[W[s]]=true;
    fill_line(u, W[s]);
    fill_line(W[s], v);
}

void dfs(int v, int p=-1){
    nu[v]=++now;
    for(int x:G[v]) if(x!=p) dfs(x,v);
}

void solve2(){
    done[0]=true;
    for(int i=1; i<n; i++){
        if(done[i]) continue;

        vector<int> V;
        for(int i=0; i<n; i++) if(done[i]) V.push_back(i);

        int Arr[1400]={};
        for(int j=0; j<n; j++) Arr[j]=!done[j];

        now=0; dfs(V[0], -1);
        int s=0, e=V.size()-1U;
        while(s<e){
            int m=(s+e)/2;
            for(int j=0; j<=m; j++) Arr[V[j]]=1;
            int res=my_ask(V[m], i, Arr);
            for(int j=0; j<=m; j++) Arr[V[j]]=0;
            if(res) e=m;
            else s=m+1;
        }

        // for(int i=0; i<n; i++) cout<<done[i]<<' ';
        // cout<<'\n';
        done[i]=true;
        fill_line(V[s], i);
    }
}

void Detect(int T, int _n) {
    n=_n;
    for(int i=0; i<n; i++) full[i]=1;
    if(T==1) solve1();
    if(2<=T && T<=4) solve2();
}

Compilation message

park.cpp:11:24: warning: 'empt' defined but not used [-Wunused-variable]
 static int full[1400], empt[1400];
                        ^~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 376 KB Output is correct
2 Correct 12 ms 556 KB Output is correct
3 Correct 10 ms 556 KB Output is correct
4 Correct 12 ms 556 KB Output is correct
5 Correct 11 ms 556 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 63 ms 15972 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #3
0 / 27.0

# Verdict Execution time Memory Grader output
1 Runtime error 86 ms 25928 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #4
0 / 30.0

# Verdict Execution time Memory Grader output
1 Runtime error 49 ms 25928 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 25928 KB Wrong Answer[6]
2 Halted 0 ms 0 KB -