oj.uz

Submission #1051897

# Submission time Handle Problem Language Result Execution time Memory
1051897 2024-08-10T10:28:43 Z MarwenElarbi Fountain Parks (IOI21_parks) C++17
30 / 100
 446 ms 48380 KB 
#include <bits/stdc++.h>
using namespace std;
#include "parks.h"
#define pb push_back
#define fi first
#define se second
const int nax=2e5+5;
set<pair<int,int>> mp;
map<pair<int,int>,int> cor;
set<pair<int,int>> vis;
int parent[nax];
bool check(pair<int,int> a){
    if(!mp.count({a.fi-2,a.se})&&!mp.count({a.fi+2,a.se})&&!mp.count({a.fi,a.se-2})&&!mp.count({a.fi,a.se+2})) return false;
    return true; 
}
int find(int x){
    if(x==parent[x]) return x;
    return parent[x]=find(parent[x]);
}
bool sameset(int x,int y){
    return find(x)==find(y);
}
void joinset(int x,int y) {
    x=find(x);
    y=find(y);
    parent[x]=y;
}
int construct_roads(std::vector<int> x, std::vector<int> y) {
    if (x.size() == 1) {
	build({}, {}, {}, {});
        return 1;
    }
    std::vector<int> u, v, a, b;
    int n=y.size();
    for (int i = 0; i < n; ++i) parent[i]=i;
    for (int i = 0; i < n; ++i)
    {
        mp.insert({x[i],y[i]});
        cor[{x[i],y[i]}]=i;
    }
    bool test=true;
    for(auto i:mp){
        if(!check(i)){
            test=false;
            break;
        }
        if(mp.count({i.fi+2,i.se})){
            if(sameset(cor[i],cor[{i.fi+2,i.se}])) continue;
            pair<int,int> cur={i.fi+1,i.se-1};
            if(vis.count(cur)) cur.se+=2;
            if(vis.count(cur)) continue;
            vis.insert(cur);
            joinset(cor[i],cor[{i.fi+2,i.se}]);
            a.pb(cur.fi);
            b.pb(cur.se);
            u.pb(cor[i]);
            v.pb(cor[{i.fi+2,i.se}]);
        }
        if(mp.count({i.fi,i.se+2})){
            if(sameset(cor[i],cor[{i.fi,i.se+2}])) continue;
            joinset(cor[i],cor[{i.fi,i.se+2}]);
            pair<int,int> cur={i.fi-1,i.se+1};
            if(vis.count(cur)) cur.fi+=2;
            if(vis.count(cur)) continue;
            vis.insert(cur);
            a.pb(cur.fi);
            b.pb(cur.se);
            u.pb(cor[i]);
            v.pb(cor[{i.fi,i.se+2}]);
        }
    }
    if(!test) return 0;
    if((int)u.size()!=n-1) 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 348 KB Output is correct
2 Correct 0 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 348 KB Output is correct
9 Correct 145 ms 22732 KB Output is correct
10 Correct 11 ms 2864 KB Output is correct
11 Correct 90 ms 12236 KB Output is correct
12 Correct 15 ms 3932 KB Output is correct
13 Correct 62 ms 8900 KB Output is correct
14 Correct 1 ms 600 KB Output is correct
15 Correct 2 ms 600 KB Output is correct
16 Correct 146 ms 22616 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 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 348 KB Output is correct
9 Correct 145 ms 22732 KB Output is correct
10 Correct 11 ms 2864 KB Output is correct
11 Correct 90 ms 12236 KB Output is correct
12 Correct 15 ms 3932 KB Output is correct
13 Correct 62 ms 8900 KB Output is correct
14 Correct 1 ms 600 KB Output is correct
15 Correct 2 ms 600 KB Output is correct
16 Correct 146 ms 22616 KB Output is correct
17 Correct 0 ms 344 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 432 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 333 ms 47512 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 1 ms 604 KB Output is correct
26 Correct 3 ms 860 KB Output is correct
27 Correct 4 ms 1036 KB Output is correct
28 Correct 113 ms 19176 KB Output is correct
29 Correct 192 ms 28596 KB Output is correct
30 Correct 273 ms 38056 KB Output is correct
31 Correct 344 ms 47528 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 344 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 3 ms 604 KB Output is correct
44 Correct 3 ms 860 KB Output is correct
45 Correct 144 ms 22708 KB Output is correct
46 Correct 215 ms 32748 KB Output is correct
47 Correct 246 ms 32932 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 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 348 KB Output is correct
9 Correct 145 ms 22732 KB Output is correct
10 Correct 11 ms 2864 KB Output is correct
11 Correct 90 ms 12236 KB Output is correct
12 Correct 15 ms 3932 KB Output is correct
13 Correct 62 ms 8900 KB Output is correct
14 Correct 1 ms 600 KB Output is correct
15 Correct 2 ms 600 KB Output is correct
16 Correct 146 ms 22616 KB Output is correct
17 Correct 0 ms 344 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 432 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 333 ms 47512 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 1 ms 604 KB Output is correct
26 Correct 3 ms 860 KB Output is correct
27 Correct 4 ms 1036 KB Output is correct
28 Correct 113 ms 19176 KB Output is correct
29 Correct 192 ms 28596 KB Output is correct
30 Correct 273 ms 38056 KB Output is correct
31 Correct 344 ms 47528 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 344 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 3 ms 604 KB Output is correct
44 Correct 3 ms 860 KB Output is correct
45 Correct 144 ms 22708 KB Output is correct
46 Correct 215 ms 32748 KB Output is correct
47 Correct 246 ms 32932 KB Output is correct
48 Correct 0 ms 344 KB Output is correct
49 Correct 1 ms 344 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 348 KB Output is correct
55 Correct 349 ms 48380 KB Output is correct
56 Correct 1 ms 344 KB Output is correct
57 Correct 2 ms 856 KB Output is correct
58 Correct 8 ms 1884 KB Output is correct
59 Correct 12 ms 2396 KB Output is correct
60 Correct 145 ms 24272 KB Output is correct
61 Correct 220 ms 32680 KB Output is correct
62 Correct 271 ms 39920 KB Output is correct
63 Correct 343 ms 48292 KB Output is correct
64 Correct 0 ms 348 KB Output is correct
65 Correct 0 ms 348 KB Output is correct
66 Correct 0 ms 348 KB Output is correct
67 Correct 322 ms 46616 KB Output is correct
68 Correct 320 ms 47900 KB Output is correct
69 Correct 302 ms 47268 KB Output is correct
70 Correct 5 ms 1112 KB Output is correct
71 Correct 9 ms 1852 KB Output is correct
72 Correct 141 ms 23404 KB Output is correct
73 Correct 306 ms 34984 KB Output is correct
74 Correct 389 ms 46500 KB Output is correct
75 Correct 376 ms 48276 KB Output is correct
76 Correct 348 ms 47912 KB Output is correct
77 Correct 6 ms 1372 KB Output is correct
78 Correct 9 ms 2144 KB Output is correct
79 Correct 183 ms 23360 KB Output is correct
80 Correct 258 ms 35132 KB Output is correct
81 Correct 372 ms 46760 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 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 348 KB Output is correct
9 Correct 145 ms 22732 KB Output is correct
10 Correct 11 ms 2864 KB Output is correct
11 Correct 90 ms 12236 KB Output is correct
12 Correct 15 ms 3932 KB Output is correct
13 Correct 62 ms 8900 KB Output is correct
14 Correct 1 ms 600 KB Output is correct
15 Correct 2 ms 600 KB Output is correct
16 Correct 146 ms 22616 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 335 ms 45040 KB Output is correct
21 Correct 341 ms 45236 KB Output is correct
22 Correct 321 ms 44896 KB Output is correct
23 Correct 252 ms 38568 KB Output is correct
24 Correct 115 ms 26196 KB Output is correct
25 Correct 290 ms 38708 KB Output is correct
26 Correct 271 ms 38564 KB Output is correct
27 Correct 315 ms 44964 KB Output is correct
28 Correct 374 ms 44964 KB Output is correct
29 Correct 352 ms 44960 KB Output is correct
30 Correct 446 ms 44948 KB Output is correct
31 Correct 0 ms 600 KB Output is correct
32 Incorrect 15 ms 3160 KB Solution announced impossible, but it is possible.
33 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 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 348 KB Output is correct
9 Correct 145 ms 22732 KB Output is correct
10 Correct 11 ms 2864 KB Output is correct
11 Correct 90 ms 12236 KB Output is correct
12 Correct 15 ms 3932 KB Output is correct
13 Correct 62 ms 8900 KB Output is correct
14 Correct 1 ms 600 KB Output is correct
15 Correct 2 ms 600 KB Output is correct
16 Correct 146 ms 22616 KB Output is correct
17 Correct 426 ms 46920 KB Output is correct
18 Correct 373 ms 46472 KB Output is correct
19 Correct 382 ms 47144 KB Output is correct
20 Correct 374 ms 45628 KB Output is correct
21 Correct 313 ms 40828 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Incorrect 40 ms 6608 KB Solution announced impossible, but it is possible.
24 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 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 348 KB Output is correct
9 Correct 145 ms 22732 KB Output is correct
10 Correct 11 ms 2864 KB Output is correct
11 Correct 90 ms 12236 KB Output is correct
12 Correct 15 ms 3932 KB Output is correct
13 Correct 62 ms 8900 KB Output is correct
14 Correct 1 ms 600 KB Output is correct
15 Correct 2 ms 600 KB Output is correct
16 Correct 146 ms 22616 KB Output is correct
17 Correct 0 ms 344 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 432 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 333 ms 47512 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 1 ms 604 KB Output is correct
26 Correct 3 ms 860 KB Output is correct
27 Correct 4 ms 1036 KB Output is correct
28 Correct 113 ms 19176 KB Output is correct
29 Correct 192 ms 28596 KB Output is correct
30 Correct 273 ms 38056 KB Output is correct
31 Correct 344 ms 47528 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 344 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 3 ms 604 KB Output is correct
44 Correct 3 ms 860 KB Output is correct
45 Correct 144 ms 22708 KB Output is correct
46 Correct 215 ms 32748 KB Output is correct
47 Correct 246 ms 32932 KB Output is correct
48 Correct 0 ms 344 KB Output is correct
49 Correct 1 ms 344 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 348 KB Output is correct
55 Correct 349 ms 48380 KB Output is correct
56 Correct 1 ms 344 KB Output is correct
57 Correct 2 ms 856 KB Output is correct
58 Correct 8 ms 1884 KB Output is correct
59 Correct 12 ms 2396 KB Output is correct
60 Correct 145 ms 24272 KB Output is correct
61 Correct 220 ms 32680 KB Output is correct
62 Correct 271 ms 39920 KB Output is correct
63 Correct 343 ms 48292 KB Output is correct
64 Correct 0 ms 348 KB Output is correct
65 Correct 0 ms 348 KB Output is correct
66 Correct 0 ms 348 KB Output is correct
67 Correct 322 ms 46616 KB Output is correct
68 Correct 320 ms 47900 KB Output is correct
69 Correct 302 ms 47268 KB Output is correct
70 Correct 5 ms 1112 KB Output is correct
71 Correct 9 ms 1852 KB Output is correct
72 Correct 141 ms 23404 KB Output is correct
73 Correct 306 ms 34984 KB Output is correct
74 Correct 389 ms 46500 KB Output is correct
75 Correct 376 ms 48276 KB Output is correct
76 Correct 348 ms 47912 KB Output is correct
77 Correct 6 ms 1372 KB Output is correct
78 Correct 9 ms 2144 KB Output is correct
79 Correct 183 ms 23360 KB Output is correct
80 Correct 258 ms 35132 KB Output is correct
81 Correct 372 ms 46760 KB Output is correct
82 Correct 0 ms 348 KB Output is correct
83 Correct 0 ms 348 KB Output is correct
84 Correct 1 ms 348 KB Output is correct
85 Correct 335 ms 45040 KB Output is correct
86 Correct 341 ms 45236 KB Output is correct
87 Correct 321 ms 44896 KB Output is correct
88 Correct 252 ms 38568 KB Output is correct
89 Correct 115 ms 26196 KB Output is correct
90 Correct 290 ms 38708 KB Output is correct
91 Correct 271 ms 38564 KB Output is correct
92 Correct 315 ms 44964 KB Output is correct
93 Correct 374 ms 44964 KB Output is correct
94 Correct 352 ms 44960 KB Output is correct
95 Correct 446 ms 44948 KB Output is correct
96 Correct 0 ms 600 KB Output is correct
97 Incorrect 15 ms 3160 KB Solution announced impossible, but it is possible.
98 Halted 0 ms 0 KB -