oj.uz

Submission #1053067

# Submission time Handle Problem Language Result Execution time Memory
1053067 2024-08-11T08:25:39 Z tolbi Fountain Parks (IOI21_parks) C++17
15 / 100
 325 ms 37284 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],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()});
                }
            }
        }
        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()});
                }
            }
        }
        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:72:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   72 |         for (int i = 0; i < xa.size(); i++){
      |                         ~~^~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 360 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 134 ms 17920 KB Output is correct
10 Correct 6 ms 2392 KB Output is correct
11 Correct 39 ms 9876 KB Output is correct
12 Correct 9 ms 3164 KB Output is correct
13 Correct 24 ms 6792 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 129 ms 17848 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 360 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 134 ms 17920 KB Output is correct
10 Correct 6 ms 2392 KB Output is correct
11 Correct 39 ms 9876 KB Output is correct
12 Correct 9 ms 3164 KB Output is correct
13 Correct 24 ms 6792 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 129 ms 17848 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 Correct 0 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 298 ms 31268 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 604 KB Output is correct
27 Correct 3 ms 860 KB Output is correct
28 Correct 91 ms 12736 KB Output is correct
29 Correct 146 ms 18872 KB Output is correct
30 Correct 213 ms 25104 KB Output is correct
31 Correct 286 ms 31140 KB Output is correct
32 Correct 0 ms 344 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 376 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 1 ms 348 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 1 ms 604 KB Output is correct
44 Correct 2 ms 604 KB Output is correct
45 Correct 117 ms 16464 KB Output is correct
46 Correct 195 ms 23720 KB Output is correct
47 Correct 190 ms 23720 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 360 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 134 ms 17920 KB Output is correct
10 Correct 6 ms 2392 KB Output is correct
11 Correct 39 ms 9876 KB Output is correct
12 Correct 9 ms 3164 KB Output is correct
13 Correct 24 ms 6792 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 129 ms 17848 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 Correct 0 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 298 ms 31268 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 604 KB Output is correct
27 Correct 3 ms 860 KB Output is correct
28 Correct 91 ms 12736 KB Output is correct
29 Correct 146 ms 18872 KB Output is correct
30 Correct 213 ms 25104 KB Output is correct
31 Correct 286 ms 31140 KB Output is correct
32 Correct 0 ms 344 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 376 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 1 ms 348 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 1 ms 604 KB Output is correct
44 Correct 2 ms 604 KB Output is correct
45 Correct 117 ms 16464 KB Output is correct
46 Correct 195 ms 23720 KB Output is correct
47 Correct 190 ms 23720 KB Output is correct
48 Correct 0 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 Correct 0 ms 348 KB Output is correct
52 Correct 0 ms 348 KB Output is correct
53 Correct 0 ms 348 KB Output is correct
54 Correct 0 ms 600 KB Output is correct
55 Correct 325 ms 34404 KB Output is correct
56 Correct 0 ms 348 KB Output is correct
57 Correct 1 ms 708 KB Output is correct
58 Correct 5 ms 1476 KB Output is correct
59 Correct 8 ms 1780 KB Output is correct
60 Correct 127 ms 17336 KB Output is correct
61 Correct 205 ms 23208 KB Output is correct
62 Correct 242 ms 28584 KB Output is correct
63 Correct 317 ms 34472 KB Output is correct
64 Correct 0 ms 344 KB Output is correct
65 Correct 0 ms 348 KB Output is correct
66 Correct 0 ms 440 KB Output is correct
67 Correct 311 ms 37280 KB Output is correct
68 Correct 296 ms 37284 KB Output is correct
69 Correct 300 ms 37052 KB Output is correct
70 Correct 3 ms 856 KB Output is correct
71 Correct 6 ms 1372 KB Output is correct
72 Incorrect 112 ms 14868 KB Solution announced impossible, but it is possible.
73 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 0 ms 348 KB Output is correct
3 Correct 0 ms 360 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 134 ms 17920 KB Output is correct
10 Correct 6 ms 2392 KB Output is correct
11 Correct 39 ms 9876 KB Output is correct
12 Correct 9 ms 3164 KB Output is correct
13 Correct 24 ms 6792 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 129 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 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 360 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 134 ms 17920 KB Output is correct
10 Correct 6 ms 2392 KB Output is correct
11 Correct 39 ms 9876 KB Output is correct
12 Correct 9 ms 3164 KB Output is correct
13 Correct 24 ms 6792 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 129 ms 17848 KB Output is correct
17 Incorrect 82 ms 16020 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 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 360 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 134 ms 17920 KB Output is correct
10 Correct 6 ms 2392 KB Output is correct
11 Correct 39 ms 9876 KB Output is correct
12 Correct 9 ms 3164 KB Output is correct
13 Correct 24 ms 6792 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 129 ms 17848 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 Correct 0 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 298 ms 31268 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 604 KB Output is correct
27 Correct 3 ms 860 KB Output is correct
28 Correct 91 ms 12736 KB Output is correct
29 Correct 146 ms 18872 KB Output is correct
30 Correct 213 ms 25104 KB Output is correct
31 Correct 286 ms 31140 KB Output is correct
32 Correct 0 ms 344 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 376 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 1 ms 348 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 1 ms 604 KB Output is correct
44 Correct 2 ms 604 KB Output is correct
45 Correct 117 ms 16464 KB Output is correct
46 Correct 195 ms 23720 KB Output is correct
47 Correct 190 ms 23720 KB Output is correct
48 Correct 0 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 Correct 0 ms 348 KB Output is correct
52 Correct 0 ms 348 KB Output is correct
53 Correct 0 ms 348 KB Output is correct
54 Correct 0 ms 600 KB Output is correct
55 Correct 325 ms 34404 KB Output is correct
56 Correct 0 ms 348 KB Output is correct
57 Correct 1 ms 708 KB Output is correct
58 Correct 5 ms 1476 KB Output is correct
59 Correct 8 ms 1780 KB Output is correct
60 Correct 127 ms 17336 KB Output is correct
61 Correct 205 ms 23208 KB Output is correct
62 Correct 242 ms 28584 KB Output is correct
63 Correct 317 ms 34472 KB Output is correct
64 Correct 0 ms 344 KB Output is correct
65 Correct 0 ms 348 KB Output is correct
66 Correct 0 ms 440 KB Output is correct
67 Correct 311 ms 37280 KB Output is correct
68 Correct 296 ms 37284 KB Output is correct
69 Correct 300 ms 37052 KB Output is correct
70 Correct 3 ms 856 KB Output is correct
71 Correct 6 ms 1372 KB Output is correct
72 Incorrect 112 ms 14868 KB Solution announced impossible, but it is possible.
73 Halted 0 ms 0 KB -