oj.uz

Submission #836822

# Submission time Handle Problem Language Result Execution time Memory
836822 2023-08-24T16:06:49 Z ma_moutahid Fountain Parks (IOI21_parks) C++17
5 / 100
 209 ms 41660 KB 
#include "parks.h"
#include<bits/stdc++.h>
using namespace std;

#define vi vector<int>
#define vii vector<vi>
#define pi pair<int,int>
#define vp vector<pi>

vi d;
vi h;
int parent(int x){
    if(d[x]==x)return x;
    return d[x]=parent(d[x]);
}
void connect(int a, int b){
    a=parent(a);
    b=parent(b);
    if(h[a]<h[b])swap(a,b);
    if(h[a]==h[b])h[a]++;
    d[b]=a;
}



int construct_roads(std::vector<int> x, std::vector<int> y) {
    //bsmllah
    int n=x.size();
    d.resize(n);for(int i=0;i<n;i++)d[i]=i;
    h.resize(n);
    vi u;
    vi v;
    vi a;
    vi b;

    map<pi,int>f;
    for(int i=0;i<n;i++){
        f.insert(make_pair(pi(x[i],y[i]),i));
    }
    vii k(4, vi(200001,-1));
    for(int i=0;i<n;i++){
        k[x[i]/2][y[i]]=i;
        if(x[i]==4){
            continue;
        }
        auto itr=f.find(pi(x[i],y[i]+2));
        if(itr!=f.end()){
            u.push_back(i);
            v.push_back(itr->second);
            a.push_back(x[i]+x[i]-3);
            b.push_back(y[i]+1);
            connect(i,itr->second);
        }
    }
    if(k[2][2]!=-1){
        if(k[1][2]!=-1){
            u.push_back(k[1][2]);
            v.push_back(k[2][2]);
            connect(k[1][2],k[2][2]);
            a.push_back(3);
            b.push_back(1);
        }
        if(k[3][2]!=-1){
            u.push_back(k[3][2]);
            v.push_back(k[2][2]);
            connect(k[3][2],k[2][2]);
            a.push_back(5);
            b.push_back(1);
        }
    }
    for(int i=4;i<200001;i+=2){
        if(k[2][i]==-1)continue;
        if(k[2][i-2]==-1){
            if(k[1][i]!=-1){
                u.push_back(k[1][i]);
                v.push_back(k[2][i]);
                a.push_back(3);
                b.push_back(i-1);
                connect(k[1][i],k[2][i]);
            }
            if(k[3][i]!=-1){
                u.push_back(k[3][i]);
                v.push_back(k[2][i]);
                a.push_back(5);
                b.push_back(i-1);
                connect(k[3][i],k[2][i]);
            }
            continue;
        }
        u.push_back(k[2][i]);
        v.push_back(k[2][i-2]);
        b.push_back(i-1);
        if(i%4){
            a.push_back(5);
        }
        else{
            a.push_back(3);
        }
        connect(k[2][i],k[2][i-2]);
        if(k[3][i-2]==1 && k[3][i]!=-1){
            u.push_back(k[3][i]);
            v.push_back(k[2][i]);
            a.push_back(5);
            if(i%4){
                b.push_back(i+1);
            }
            else {
                b.push_back(i-1);
            }
            connect(k[3][i],k[2][i]);
        }
        if(k[1][i-2]==1 && k[1][i]!=-1){
            u.push_back(k[1][i]);
            v.push_back(k[2][i]);
            a.push_back(3);
            if(i%4){
                b.push_back(i-1);
            }
            else {
                b.push_back(i+1);
            }
            connect(k[1][i],k[2][i]);
        }
        
    }


    for(int i=0;i<n;i++){
        if(parent(d[i])!=parent(d[0]))return 0;
    }

    build(u,v,a,b);
    return 1;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4180 KB Output is correct
2 Correct 2 ms 4180 KB Output is correct
3 Correct 2 ms 4180 KB Output is correct
4 Correct 2 ms 4180 KB Output is correct
5 Correct 2 ms 4180 KB Output is correct
6 Correct 2 ms 4180 KB Output is correct
7 Correct 2 ms 4180 KB Output is correct
8 Correct 2 ms 4180 KB Output is correct
9 Correct 104 ms 17048 KB Output is correct
10 Correct 8 ms 5076 KB Output is correct
11 Correct 36 ms 10640 KB Output is correct
12 Correct 10 ms 5460 KB Output is correct
13 Correct 19 ms 8516 KB Output is correct
14 Correct 2 ms 4308 KB Output is correct
15 Correct 3 ms 4308 KB Output is correct
16 Correct 101 ms 17056 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4180 KB Output is correct
2 Correct 2 ms 4180 KB Output is correct
3 Correct 2 ms 4180 KB Output is correct
4 Correct 2 ms 4180 KB Output is correct
5 Correct 2 ms 4180 KB Output is correct
6 Correct 2 ms 4180 KB Output is correct
7 Correct 2 ms 4180 KB Output is correct
8 Correct 2 ms 4180 KB Output is correct
9 Correct 104 ms 17048 KB Output is correct
10 Correct 8 ms 5076 KB Output is correct
11 Correct 36 ms 10640 KB Output is correct
12 Correct 10 ms 5460 KB Output is correct
13 Correct 19 ms 8516 KB Output is correct
14 Correct 2 ms 4308 KB Output is correct
15 Correct 3 ms 4308 KB Output is correct
16 Correct 101 ms 17056 KB Output is correct
17 Correct 2 ms 4180 KB Output is correct
18 Correct 2 ms 4180 KB Output is correct
19 Correct 2 ms 4240 KB Output is correct
20 Correct 2 ms 4180 KB Output is correct
21 Correct 2 ms 4180 KB Output is correct
22 Correct 2 ms 4180 KB Output is correct
23 Correct 209 ms 31972 KB Output is correct
24 Incorrect 2 ms 4180 KB Solution announced impossible, but it is possible.
25 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4180 KB Output is correct
2 Correct 2 ms 4180 KB Output is correct
3 Correct 2 ms 4180 KB Output is correct
4 Correct 2 ms 4180 KB Output is correct
5 Correct 2 ms 4180 KB Output is correct
6 Correct 2 ms 4180 KB Output is correct
7 Correct 2 ms 4180 KB Output is correct
8 Correct 2 ms 4180 KB Output is correct
9 Correct 104 ms 17048 KB Output is correct
10 Correct 8 ms 5076 KB Output is correct
11 Correct 36 ms 10640 KB Output is correct
12 Correct 10 ms 5460 KB Output is correct
13 Correct 19 ms 8516 KB Output is correct
14 Correct 2 ms 4308 KB Output is correct
15 Correct 3 ms 4308 KB Output is correct
16 Correct 101 ms 17056 KB Output is correct
17 Correct 2 ms 4180 KB Output is correct
18 Correct 2 ms 4180 KB Output is correct
19 Correct 2 ms 4240 KB Output is correct
20 Correct 2 ms 4180 KB Output is correct
21 Correct 2 ms 4180 KB Output is correct
22 Correct 2 ms 4180 KB Output is correct
23 Correct 209 ms 31972 KB Output is correct
24 Incorrect 2 ms 4180 KB Solution announced impossible, but it is possible.
25 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4180 KB Output is correct
2 Correct 2 ms 4180 KB Output is correct
3 Correct 2 ms 4180 KB Output is correct
4 Correct 2 ms 4180 KB Output is correct
5 Correct 2 ms 4180 KB Output is correct
6 Correct 2 ms 4180 KB Output is correct
7 Correct 2 ms 4180 KB Output is correct
8 Correct 2 ms 4180 KB Output is correct
9 Correct 104 ms 17048 KB Output is correct
10 Correct 8 ms 5076 KB Output is correct
11 Correct 36 ms 10640 KB Output is correct
12 Correct 10 ms 5460 KB Output is correct
13 Correct 19 ms 8516 KB Output is correct
14 Correct 2 ms 4308 KB Output is correct
15 Correct 3 ms 4308 KB Output is correct
16 Correct 101 ms 17056 KB Output is correct
17 Runtime error 5 ms 6724 KB Execution killed with signal 11
18 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4180 KB Output is correct
2 Correct 2 ms 4180 KB Output is correct
3 Correct 2 ms 4180 KB Output is correct
4 Correct 2 ms 4180 KB Output is correct
5 Correct 2 ms 4180 KB Output is correct
6 Correct 2 ms 4180 KB Output is correct
7 Correct 2 ms 4180 KB Output is correct
8 Correct 2 ms 4180 KB Output is correct
9 Correct 104 ms 17048 KB Output is correct
10 Correct 8 ms 5076 KB Output is correct
11 Correct 36 ms 10640 KB Output is correct
12 Correct 10 ms 5460 KB Output is correct
13 Correct 19 ms 8516 KB Output is correct
14 Correct 2 ms 4308 KB Output is correct
15 Correct 3 ms 4308 KB Output is correct
16 Correct 101 ms 17056 KB Output is correct
17 Runtime error 121 ms 41660 KB Execution killed with signal 11
18 Halted 0 ms 0 KB -

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4180 KB Output is correct
2 Correct 2 ms 4180 KB Output is correct
3 Correct 2 ms 4180 KB Output is correct
4 Correct 2 ms 4180 KB Output is correct
5 Correct 2 ms 4180 KB Output is correct
6 Correct 2 ms 4180 KB Output is correct
7 Correct 2 ms 4180 KB Output is correct
8 Correct 2 ms 4180 KB Output is correct
9 Correct 104 ms 17048 KB Output is correct
10 Correct 8 ms 5076 KB Output is correct
11 Correct 36 ms 10640 KB Output is correct
12 Correct 10 ms 5460 KB Output is correct
13 Correct 19 ms 8516 KB Output is correct
14 Correct 2 ms 4308 KB Output is correct
15 Correct 3 ms 4308 KB Output is correct
16 Correct 101 ms 17056 KB Output is correct
17 Correct 2 ms 4180 KB Output is correct
18 Correct 2 ms 4180 KB Output is correct
19 Correct 2 ms 4240 KB Output is correct
20 Correct 2 ms 4180 KB Output is correct
21 Correct 2 ms 4180 KB Output is correct
22 Correct 2 ms 4180 KB Output is correct
23 Correct 209 ms 31972 KB Output is correct
24 Incorrect 2 ms 4180 KB Solution announced impossible, but it is possible.
25 Halted 0 ms 0 KB -