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Submission #1053049

# Submission time Handle Problem Language Result Execution time Memory
1053049 2024-08-11T08:11:48 Z tolbi Fountain Parks (IOI21_parks) C++17
15 / 100
 309 ms 34580 KB 
#include "parks.h"
#include <bits/stdc++.h>
using namespace std;
//void build(std::vector<int> u, std::vector<int> v, std::vector<int> a, std::vector<int> b);
struct DSU{
    vector<int> par;
    int tot;
    DSU(int n):tot(n){
        par.resize(n);
        iota(par.begin(), par.end(), 0);
    }
    int find(int node){
        if (par[node]==node) return node;
        return par[node]=find(par[node]);
    }
    bool merge(int a, int b){
        a=find(a);
        b=find(b);
        if (a!=b) tot--;
        else return false;
        par[a]=b;
        return true;
    }
};
int construct_roads(vector<int> x, vector<int> y) {
    bool subtask3 = true;
    int n = x.size();
    map<pair<int,int>,int> mp;
    for (int i = 0; i < n; i++){
        mp[{x[i],y[i]}]=i;
        if (x[i]<2 || x[i]>6) subtask3=false;
    }
    if (subtask3){
        DSU dsu(n);
        vector<int> u;
        vector<int> v;
        vector<int> xa;
        vector<int> ya;
        set<pair<int,int>> occupied;
        vector<int> lol;
        for (int i = 0; i < n; ++i)
        {
            if (mp.count({x[i]-2,y[i]})){
                if (dsu.merge(i,mp[{x[i]-2,y[i]}])){
                    u.push_back(mp[{x[i]-2,y[i]}]);
                    v.push_back(i);
                    xa.push_back(x[i]-1);
                    if (x[i]==6) ya.push_back(y[i]-1);
                    else ya.push_back(y[i]+1);
                    occupied.insert({xa.back(),ya.back()});
                }
            }
            if (mp.count({x[i],y[i]-2})){
                if (dsu.merge(i,mp[{x[i],y[i]-2}])){
                    u.push_back(mp[{x[i],y[i]-2}]);
                    v.push_back(i);
                    ya.push_back(y[i]-1);
                    if (x[i]==2) xa.push_back(x[i]-1);
                    else if (x[i]==6) xa.push_back(x[i]+1);
                    else {
                        xa.push_back(-1);
                        lol.push_back(x[i]);
                    }
                    if (xa.back()!=-1) occupied.insert({xa.back(),ya.back()});
                }
            }
        }
        reverse(lol.begin(), lol.end());
        bool boolean=true;
        for (int i = 0; i < xa.size(); i++){
            if (xa[i]==-1){
                if (occupied.find({lol.back()+1,ya[i]})==occupied.end()){
                    xa[i]=lol.back()+1;
                }
                else if (occupied.find({lol.back()-1,ya[i]})==occupied.end()){
                    xa[i]=lol.back()-1;
                }
                else {
                    boolean=false;
                    break;
                }
                lol.pop_back();
            }
        }
        if (dsu.tot==1 && boolean) {
            return build(u,v,xa,ya),1;
        }
        return 0;
    }
    else return cout<<"WA"<<endl,0;
}

Compilation message

parks.cpp: In function 'int construct_roads(std::vector<int>, std::vector<int>)':
parks.cpp:70:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   70 |         for (int i = 0; i < xa.size(); i++){
      |                         ~~^~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 504 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 348 KB Output is correct
9 Correct 127 ms 17848 KB Output is correct
10 Correct 7 ms 2396 KB Output is correct
11 Correct 40 ms 9864 KB Output is correct
12 Correct 10 ms 3420 KB Output is correct
13 Correct 26 ms 6860 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 123 ms 17848 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 504 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 348 KB Output is correct
9 Correct 127 ms 17848 KB Output is correct
10 Correct 7 ms 2396 KB Output is correct
11 Correct 40 ms 9864 KB Output is correct
12 Correct 10 ms 3420 KB Output is correct
13 Correct 26 ms 6860 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 123 ms 17848 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 432 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 308 ms 34580 KB Output is correct
24 Correct 0 ms 344 KB Output is correct
25 Correct 1 ms 604 KB Output is correct
26 Correct 2 ms 704 KB Output is correct
27 Correct 3 ms 860 KB Output is correct
28 Correct 98 ms 13916 KB Output is correct
29 Correct 159 ms 20888 KB Output is correct
30 Correct 226 ms 27556 KB Output is correct
31 Correct 309 ms 34448 KB Output is correct
32 Correct 0 ms 344 KB Output is correct
33 Correct 1 ms 344 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 0 ms 348 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 2 ms 604 KB Output is correct
44 Correct 2 ms 740 KB Output is correct
45 Correct 124 ms 17336 KB Output is correct
46 Correct 195 ms 24904 KB Output is correct
47 Correct 195 ms 25000 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 504 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 348 KB Output is correct
9 Correct 127 ms 17848 KB Output is correct
10 Correct 7 ms 2396 KB Output is correct
11 Correct 40 ms 9864 KB Output is correct
12 Correct 10 ms 3420 KB Output is correct
13 Correct 26 ms 6860 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 123 ms 17848 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 432 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 308 ms 34580 KB Output is correct
24 Correct 0 ms 344 KB Output is correct
25 Correct 1 ms 604 KB Output is correct
26 Correct 2 ms 704 KB Output is correct
27 Correct 3 ms 860 KB Output is correct
28 Correct 98 ms 13916 KB Output is correct
29 Correct 159 ms 20888 KB Output is correct
30 Correct 226 ms 27556 KB Output is correct
31 Correct 309 ms 34448 KB Output is correct
32 Correct 0 ms 344 KB Output is correct
33 Correct 1 ms 344 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 0 ms 348 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 2 ms 604 KB Output is correct
44 Correct 2 ms 740 KB Output is correct
45 Correct 124 ms 17336 KB Output is correct
46 Correct 195 ms 24904 KB Output is correct
47 Correct 195 ms 25000 KB Output is correct
48 Correct 1 ms 348 KB Output is correct
49 Correct 0 ms 348 KB Output is correct
50 Correct 0 ms 348 KB Output is correct
51 Incorrect 0 ms 348 KB Solution announced impossible, but it is possible.
52 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 504 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 348 KB Output is correct
9 Correct 127 ms 17848 KB Output is correct
10 Correct 7 ms 2396 KB Output is correct
11 Correct 40 ms 9864 KB Output is correct
12 Correct 10 ms 3420 KB Output is correct
13 Correct 26 ms 6860 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 123 ms 17848 KB Output is correct
17 Incorrect 0 ms 348 KB Possible tampering with the output
18 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 504 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 348 KB Output is correct
9 Correct 127 ms 17848 KB Output is correct
10 Correct 7 ms 2396 KB Output is correct
11 Correct 40 ms 9864 KB Output is correct
12 Correct 10 ms 3420 KB Output is correct
13 Correct 26 ms 6860 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 123 ms 17848 KB Output is correct
17 Incorrect 87 ms 15860 KB Possible tampering with the output
18 Halted 0 ms 0 KB -

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 504 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 348 KB Output is correct
9 Correct 127 ms 17848 KB Output is correct
10 Correct 7 ms 2396 KB Output is correct
11 Correct 40 ms 9864 KB Output is correct
12 Correct 10 ms 3420 KB Output is correct
13 Correct 26 ms 6860 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 123 ms 17848 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 432 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 308 ms 34580 KB Output is correct
24 Correct 0 ms 344 KB Output is correct
25 Correct 1 ms 604 KB Output is correct
26 Correct 2 ms 704 KB Output is correct
27 Correct 3 ms 860 KB Output is correct
28 Correct 98 ms 13916 KB Output is correct
29 Correct 159 ms 20888 KB Output is correct
30 Correct 226 ms 27556 KB Output is correct
31 Correct 309 ms 34448 KB Output is correct
32 Correct 0 ms 344 KB Output is correct
33 Correct 1 ms 344 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 0 ms 348 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 2 ms 604 KB Output is correct
44 Correct 2 ms 740 KB Output is correct
45 Correct 124 ms 17336 KB Output is correct
46 Correct 195 ms 24904 KB Output is correct
47 Correct 195 ms 25000 KB Output is correct
48 Correct 1 ms 348 KB Output is correct
49 Correct 0 ms 348 KB Output is correct
50 Correct 0 ms 348 KB Output is correct
51 Incorrect 0 ms 348 KB Solution announced impossible, but it is possible.
52 Halted 0 ms 0 KB -