Submission #1050839

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
1050839	2024-08-09T15:12:35 Z	amine_aroua	Fountain Parks (IOI21_parks)	C++17	5 / 100	338 ms	54016 KB

parks

#include "parks.h"
#include<bits/stdc++.h>
using namespace std;
vector<vector<int>> adj;
vector<bool> vis;
void dfs(int i)
{
    if(vis[i])
        return;
    vis[i] = 1;
    for(auto j : adj[i])
    {
        dfs(j);
    }
}
void add_edge(int u , int v)
{
    adj[u].push_back(v);
    adj[v].push_back(u);
}
int construct_roads(std::vector<int> x, std::vector<int> y) {
    int n= (int)x.size();
    adj.assign(n , {});
    vis.assign(n , 0);
    vector<int> u , v , a , b;
    map<pair<int, int> , int> idx;
    set<pair<int ,int>> taken;
    for(int i = 0 ; i <n ; i++)
    {
        idx[{x[i] , y[i]}] = i;
    }
    for(int i = 0 ; i < n ;i++)
    {
        if(idx.count({x[i] + 2 , y[i]}))
        {
            u.push_back(i);
            v.push_back(idx[{x[i] + 2 , y[i]}]);
            a.push_back(x[i] + 1);
            if(!taken.count({x[i] + 1 , y[i] - 1}))
            {
                b.push_back(y[i] - 1);
                taken.insert({x[i] + 1 , y[i] - 1});
            }
            else if(!taken.count({x[i] + 1 , y[i] + 1}))
            {
                b.push_back(y[i] + 1);
                taken.insert({x[i] + 1 , y[i] + 1});
            }
            else
                return 0;
        }
        if(idx.count({x[i] , y[i] + 2}))
        {
            u.push_back(i);
            v.push_back(idx[{x[i] , y[i] + 2}]);
            b.push_back(y[i] + 1);
            if(!taken.count({x[i] - 1 , y[i] + 1}))
            {
                a.push_back(x[i] - 1);
                taken.insert({x[i] - 1 , y[i] +1});
            }
            else if(!taken.count({x[i] + 1 , y[i] + 1}))
            {
                a.push_back(x[i] + 1);
                taken.insert({x[i] + 1 , y[i] +1});
            }
            else
                return 0;
        }
    }
    for(int i = 0 ; i < (int)u.size() ; i++)
    {
        add_edge(u[i] , v[i]);
    }
    dfs(0);
    for(int i = 0 ; i < n ; i++)
    {
        if(!vis[i])
        {
            return 0;
        }
    }
    build(u , v , a , b);
    return 1;
}

Subtask #1

5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	1 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	436 KB	Output is correct
9	Correct	138 ms	26648 KB	Output is correct
10	Correct	7 ms	3160 KB	Output is correct
11	Correct	43 ms	14792 KB	Output is correct
12	Correct	11 ms	4700 KB	Output is correct
13	Correct	31 ms	10192 KB	Output is correct
14	Correct	1 ms	608 KB	Output is correct
15	Correct	1 ms	864 KB	Output is correct
16	Correct	133 ms	25496 KB	Output is correct

Subtask #2

0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	1 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	436 KB	Output is correct
9	Correct	138 ms	26648 KB	Output is correct
10	Correct	7 ms	3160 KB	Output is correct
11	Correct	43 ms	14792 KB	Output is correct
12	Correct	11 ms	4700 KB	Output is correct
13	Correct	31 ms	10192 KB	Output is correct
14	Correct	1 ms	608 KB	Output is correct
15	Correct	1 ms	864 KB	Output is correct
16	Correct	133 ms	25496 KB	Output is correct
17	Correct	1 ms	344 KB	Output is correct
18	Correct	0 ms	348 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Incorrect	1 ms	348 KB	Solution announced impossible, but it is possible.
21	Halted	0 ms	0 KB	-

Subtask #3

0 / 15.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	1 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	436 KB	Output is correct
9	Correct	138 ms	26648 KB	Output is correct
10	Correct	7 ms	3160 KB	Output is correct
11	Correct	43 ms	14792 KB	Output is correct
12	Correct	11 ms	4700 KB	Output is correct
13	Correct	31 ms	10192 KB	Output is correct
14	Correct	1 ms	608 KB	Output is correct
15	Correct	1 ms	864 KB	Output is correct
16	Correct	133 ms	25496 KB	Output is correct
17	Correct	1 ms	344 KB	Output is correct
18	Correct	0 ms	348 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Incorrect	1 ms	348 KB	Solution announced impossible, but it is possible.
21	Halted	0 ms	0 KB	-

Subtask #4

0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	1 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	436 KB	Output is correct
9	Correct	138 ms	26648 KB	Output is correct
10	Correct	7 ms	3160 KB	Output is correct
11	Correct	43 ms	14792 KB	Output is correct
12	Correct	11 ms	4700 KB	Output is correct
13	Correct	31 ms	10192 KB	Output is correct
14	Correct	1 ms	608 KB	Output is correct
15	Correct	1 ms	864 KB	Output is correct
16	Correct	133 ms	25496 KB	Output is correct
17	Correct	0 ms	348 KB	Output is correct
18	Correct	0 ms	436 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Incorrect	87 ms	23276 KB	Solution announced impossible, but it is possible.
21	Halted	0 ms	0 KB	-

Subtask #5

0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	1 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	436 KB	Output is correct
9	Correct	138 ms	26648 KB	Output is correct
10	Correct	7 ms	3160 KB	Output is correct
11	Correct	43 ms	14792 KB	Output is correct
12	Correct	11 ms	4700 KB	Output is correct
13	Correct	31 ms	10192 KB	Output is correct
14	Correct	1 ms	608 KB	Output is correct
15	Correct	1 ms	864 KB	Output is correct
16	Correct	133 ms	25496 KB	Output is correct
17	Correct	334 ms	54016 KB	Output is correct
18	Correct	338 ms	51724 KB	Output is correct
19	Incorrect	86 ms	23636 KB	Solution announced impossible, but it is possible.
20	Halted	0 ms	0 KB	-

Subtask #6

0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	1 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	436 KB	Output is correct
9	Correct	138 ms	26648 KB	Output is correct
10	Correct	7 ms	3160 KB	Output is correct
11	Correct	43 ms	14792 KB	Output is correct
12	Correct	11 ms	4700 KB	Output is correct
13	Correct	31 ms	10192 KB	Output is correct
14	Correct	1 ms	608 KB	Output is correct
15	Correct	1 ms	864 KB	Output is correct
16	Correct	133 ms	25496 KB	Output is correct
17	Correct	1 ms	344 KB	Output is correct
18	Correct	0 ms	348 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Incorrect	1 ms	348 KB	Solution announced impossible, but it is possible.
21	Halted	0 ms	0 KB	-