#include <bits/stdc++.h>
#include "supertrees.h"
using namespace std;
using ll = long long;
const int mxN = 1e3+10;
vector<int> adj[mxN];
int p[mxN], root[mxN];
int get(int x) {
return p[x] < 0 ? x : p[x] = get(p[x]);
}
void uni(int x, int y) {
x = get(x); y = get(y);
if(x == y) return ;
if(p[x] > p[y]) swap(x, y);
p[x] += p[y];
p[y] = x;
}
bool same(int a, int b) {
return get(a) == get(b);
}
int construct(vector<vector<int>> P) {
int n = P.size();
for(int i = 0; i < n; i++) {
p[i] = -1;
root[i] = i;
}
for(int i = 0; i < n; i++) {
for(int j = 0; j < n; j++) {
if(P[i][j] == 3) return 0;
if(P[i][j] == 1 && !same(i, j)) {
adj[i].push_back(j);
adj[j].push_back(i);
uni(i, j);
}
}
}
bool pos = true;
for(int i = 0; i < n; i++) {
for(int j = 0; j < n; j++) {
if(P[i][j] == 1 && !same(i, j)) pos = false;
else if(P[i][j] == 2 && same(i, j)) pos = false;
else if(!P[i][j] && same(i, j)) pos = false;
}
}
for(int i = 0; i < n; i++) {
set<int> s;
for(int j = 0; j < n; j++) {
if(P[i][j] == 2 && !same(i, j)) {
s.insert(get(j));
}
}
if(s.empty()) continue;
if(s.size() == 1) {
pos = false;
break;
}
vector<int> v; for(auto it : s) v.push_back(it);
for(int i = 0; i+1 < v.size(); i++) {
int a = root[get(v[i])], b = root[get(v[i+1])];
adj[a].push_back(b);
adj[b].push_back(a);
}
int x = root[get(i)];
adj[x].push_back(root[v[0]]);
adj[root[v[0]]].push_back(x);
adj[x].push_back(root[v.back()]);
adj[v.back()].push_back(x);
for(int i = 0; i < v.size(); i++) {
uni(x, v[i]);
}
}
for(int i = 0; i < n; i++) {
for(int j = 0; j < n; j++) {
if(!P[i][j] && same(i, j)) pos = false;
}
}
if(!pos) return 0;
vector<vector<int>> ans(n, vector<int>(n));
for(int i = 0; i < n; i++) {
for(auto it : adj[i]) {
ans[i][it] = ans[it][i] = 1;
}
}
build(ans);
return 1;
}
Compilation message
supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:65:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
65 | for(int i = 0; i+1 < v.size(); i++) {
| ~~~~^~~~~~~~~~
supertrees.cpp:75:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
75 | for(int i = 0; i < v.size(); i++) {
| ~~^~~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 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 |
4 ms |
1328 KB |
Output is correct |
7 |
Correct |
102 ms |
22080 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 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 |
4 ms |
1328 KB |
Output is correct |
7 |
Correct |
102 ms |
22080 KB |
Output is correct |
8 |
Correct |
1 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
4 ms |
1132 KB |
Output is correct |
13 |
Correct |
98 ms |
22096 KB |
Output is correct |
14 |
Correct |
1 ms |
344 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
3 ms |
600 KB |
Output is correct |
17 |
Correct |
65 ms |
8380 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
0 ms |
348 KB |
Output is correct |
20 |
Correct |
26 ms |
5724 KB |
Output is correct |
21 |
Correct |
102 ms |
22096 KB |
Output is correct |
22 |
Correct |
102 ms |
22096 KB |
Output is correct |
23 |
Correct |
106 ms |
22096 KB |
Output is correct |
24 |
Correct |
98 ms |
22096 KB |
Output is correct |
25 |
Correct |
57 ms |
8276 KB |
Output is correct |
26 |
Correct |
47 ms |
8236 KB |
Output is correct |
27 |
Correct |
122 ms |
22068 KB |
Output is correct |
28 |
Correct |
96 ms |
22068 KB |
Output is correct |
# |
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 |
4 ms |
1116 KB |
Output is correct |
9 |
Correct |
95 ms |
22044 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
4 ms |
1288 KB |
Output is correct |
13 |
Correct |
100 ms |
22164 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
3 ms |
604 KB |
Output is correct |
17 |
Correct |
58 ms |
8244 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 |
344 KB |
Output is correct |
21 |
Correct |
25 ms |
5872 KB |
Output is correct |
22 |
Correct |
100 ms |
22200 KB |
Output is correct |
23 |
Correct |
99 ms |
22352 KB |
Output is correct |
24 |
Correct |
103 ms |
22064 KB |
Output is correct |
25 |
Correct |
43 ms |
8276 KB |
Output is correct |
26 |
Correct |
47 ms |
8280 KB |
Output is correct |
27 |
Correct |
100 ms |
22064 KB |
Output is correct |
28 |
Correct |
104 ms |
22096 KB |
Output is correct |
29 |
Correct |
43 ms |
8228 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
344 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
25 ms |
5848 KB |
Output is correct |
5 |
Correct |
104 ms |
22100 KB |
Output is correct |
6 |
Correct |
98 ms |
22096 KB |
Output is correct |
7 |
Correct |
104 ms |
22100 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
30 ms |
5800 KB |
Output is correct |
10 |
Correct |
114 ms |
22096 KB |
Output is correct |
11 |
Correct |
109 ms |
22100 KB |
Output is correct |
12 |
Correct |
109 ms |
22048 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
24 ms |
5864 KB |
Output is correct |
17 |
Correct |
101 ms |
22068 KB |
Output is correct |
18 |
Correct |
102 ms |
22096 KB |
Output is correct |
19 |
Correct |
100 ms |
22072 KB |
Output is correct |
20 |
Correct |
96 ms |
22164 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 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 |
4 ms |
1328 KB |
Output is correct |
7 |
Correct |
102 ms |
22080 KB |
Output is correct |
8 |
Correct |
1 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
4 ms |
1132 KB |
Output is correct |
13 |
Correct |
98 ms |
22096 KB |
Output is correct |
14 |
Correct |
1 ms |
344 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
3 ms |
600 KB |
Output is correct |
17 |
Correct |
65 ms |
8380 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
0 ms |
348 KB |
Output is correct |
20 |
Correct |
26 ms |
5724 KB |
Output is correct |
21 |
Correct |
102 ms |
22096 KB |
Output is correct |
22 |
Correct |
102 ms |
22096 KB |
Output is correct |
23 |
Correct |
106 ms |
22096 KB |
Output is correct |
24 |
Correct |
98 ms |
22096 KB |
Output is correct |
25 |
Correct |
57 ms |
8276 KB |
Output is correct |
26 |
Correct |
47 ms |
8236 KB |
Output is correct |
27 |
Correct |
122 ms |
22068 KB |
Output is correct |
28 |
Correct |
96 ms |
22068 KB |
Output is correct |
29 |
Correct |
0 ms |
348 KB |
Output is correct |
30 |
Correct |
0 ms |
348 KB |
Output is correct |
31 |
Correct |
0 ms |
348 KB |
Output is correct |
32 |
Correct |
0 ms |
348 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 |
348 KB |
Output is correct |
36 |
Correct |
4 ms |
1116 KB |
Output is correct |
37 |
Correct |
95 ms |
22044 KB |
Output is correct |
38 |
Correct |
0 ms |
348 KB |
Output is correct |
39 |
Correct |
0 ms |
348 KB |
Output is correct |
40 |
Correct |
4 ms |
1288 KB |
Output is correct |
41 |
Correct |
100 ms |
22164 KB |
Output is correct |
42 |
Correct |
0 ms |
348 KB |
Output is correct |
43 |
Correct |
0 ms |
348 KB |
Output is correct |
44 |
Correct |
3 ms |
604 KB |
Output is correct |
45 |
Correct |
58 ms |
8244 KB |
Output is correct |
46 |
Correct |
0 ms |
348 KB |
Output is correct |
47 |
Correct |
0 ms |
348 KB |
Output is correct |
48 |
Correct |
0 ms |
344 KB |
Output is correct |
49 |
Correct |
25 ms |
5872 KB |
Output is correct |
50 |
Correct |
100 ms |
22200 KB |
Output is correct |
51 |
Correct |
99 ms |
22352 KB |
Output is correct |
52 |
Correct |
103 ms |
22064 KB |
Output is correct |
53 |
Correct |
43 ms |
8276 KB |
Output is correct |
54 |
Correct |
47 ms |
8280 KB |
Output is correct |
55 |
Correct |
100 ms |
22064 KB |
Output is correct |
56 |
Correct |
104 ms |
22096 KB |
Output is correct |
57 |
Correct |
43 ms |
8228 KB |
Output is correct |
58 |
Correct |
0 ms |
344 KB |
Output is correct |
59 |
Correct |
0 ms |
344 KB |
Output is correct |
60 |
Correct |
3 ms |
600 KB |
Output is correct |
61 |
Correct |
66 ms |
8244 KB |
Output is correct |
62 |
Correct |
0 ms |
348 KB |
Output is correct |
63 |
Correct |
0 ms |
348 KB |
Output is correct |
64 |
Correct |
0 ms |
348 KB |
Output is correct |
65 |
Correct |
25 ms |
5912 KB |
Output is correct |
66 |
Correct |
52 ms |
8276 KB |
Output is correct |
67 |
Correct |
52 ms |
8376 KB |
Output is correct |
68 |
Correct |
59 ms |
8236 KB |
Output is correct |
69 |
Correct |
42 ms |
8272 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 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 |
4 ms |
1328 KB |
Output is correct |
7 |
Correct |
102 ms |
22080 KB |
Output is correct |
8 |
Correct |
1 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
4 ms |
1132 KB |
Output is correct |
13 |
Correct |
98 ms |
22096 KB |
Output is correct |
14 |
Correct |
1 ms |
344 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
3 ms |
600 KB |
Output is correct |
17 |
Correct |
65 ms |
8380 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
0 ms |
348 KB |
Output is correct |
20 |
Correct |
26 ms |
5724 KB |
Output is correct |
21 |
Correct |
102 ms |
22096 KB |
Output is correct |
22 |
Correct |
102 ms |
22096 KB |
Output is correct |
23 |
Correct |
106 ms |
22096 KB |
Output is correct |
24 |
Correct |
98 ms |
22096 KB |
Output is correct |
25 |
Correct |
57 ms |
8276 KB |
Output is correct |
26 |
Correct |
47 ms |
8236 KB |
Output is correct |
27 |
Correct |
122 ms |
22068 KB |
Output is correct |
28 |
Correct |
96 ms |
22068 KB |
Output is correct |
29 |
Correct |
0 ms |
348 KB |
Output is correct |
30 |
Correct |
0 ms |
348 KB |
Output is correct |
31 |
Correct |
0 ms |
348 KB |
Output is correct |
32 |
Correct |
0 ms |
348 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 |
348 KB |
Output is correct |
36 |
Correct |
4 ms |
1116 KB |
Output is correct |
37 |
Correct |
95 ms |
22044 KB |
Output is correct |
38 |
Correct |
0 ms |
348 KB |
Output is correct |
39 |
Correct |
0 ms |
348 KB |
Output is correct |
40 |
Correct |
4 ms |
1288 KB |
Output is correct |
41 |
Correct |
100 ms |
22164 KB |
Output is correct |
42 |
Correct |
0 ms |
348 KB |
Output is correct |
43 |
Correct |
0 ms |
348 KB |
Output is correct |
44 |
Correct |
3 ms |
604 KB |
Output is correct |
45 |
Correct |
58 ms |
8244 KB |
Output is correct |
46 |
Correct |
0 ms |
348 KB |
Output is correct |
47 |
Correct |
0 ms |
348 KB |
Output is correct |
48 |
Correct |
0 ms |
344 KB |
Output is correct |
49 |
Correct |
25 ms |
5872 KB |
Output is correct |
50 |
Correct |
100 ms |
22200 KB |
Output is correct |
51 |
Correct |
99 ms |
22352 KB |
Output is correct |
52 |
Correct |
103 ms |
22064 KB |
Output is correct |
53 |
Correct |
43 ms |
8276 KB |
Output is correct |
54 |
Correct |
47 ms |
8280 KB |
Output is correct |
55 |
Correct |
100 ms |
22064 KB |
Output is correct |
56 |
Correct |
104 ms |
22096 KB |
Output is correct |
57 |
Correct |
43 ms |
8228 KB |
Output is correct |
58 |
Correct |
0 ms |
344 KB |
Output is correct |
59 |
Correct |
0 ms |
344 KB |
Output is correct |
60 |
Correct |
0 ms |
348 KB |
Output is correct |
61 |
Correct |
25 ms |
5848 KB |
Output is correct |
62 |
Correct |
104 ms |
22100 KB |
Output is correct |
63 |
Correct |
98 ms |
22096 KB |
Output is correct |
64 |
Correct |
104 ms |
22100 KB |
Output is correct |
65 |
Correct |
0 ms |
348 KB |
Output is correct |
66 |
Correct |
30 ms |
5800 KB |
Output is correct |
67 |
Correct |
114 ms |
22096 KB |
Output is correct |
68 |
Correct |
109 ms |
22100 KB |
Output is correct |
69 |
Correct |
109 ms |
22048 KB |
Output is correct |
70 |
Correct |
0 ms |
348 KB |
Output is correct |
71 |
Correct |
0 ms |
348 KB |
Output is correct |
72 |
Correct |
0 ms |
348 KB |
Output is correct |
73 |
Correct |
24 ms |
5864 KB |
Output is correct |
74 |
Correct |
101 ms |
22068 KB |
Output is correct |
75 |
Correct |
102 ms |
22096 KB |
Output is correct |
76 |
Correct |
100 ms |
22072 KB |
Output is correct |
77 |
Correct |
96 ms |
22164 KB |
Output is correct |
78 |
Correct |
0 ms |
344 KB |
Output is correct |
79 |
Correct |
0 ms |
344 KB |
Output is correct |
80 |
Correct |
3 ms |
600 KB |
Output is correct |
81 |
Correct |
66 ms |
8244 KB |
Output is correct |
82 |
Correct |
0 ms |
348 KB |
Output is correct |
83 |
Correct |
0 ms |
348 KB |
Output is correct |
84 |
Correct |
0 ms |
348 KB |
Output is correct |
85 |
Correct |
25 ms |
5912 KB |
Output is correct |
86 |
Correct |
52 ms |
8276 KB |
Output is correct |
87 |
Correct |
52 ms |
8376 KB |
Output is correct |
88 |
Correct |
59 ms |
8236 KB |
Output is correct |
89 |
Correct |
42 ms |
8272 KB |
Output is correct |
90 |
Correct |
0 ms |
344 KB |
Output is correct |
91 |
Correct |
0 ms |
348 KB |
Output is correct |
92 |
Correct |
2 ms |
604 KB |
Output is correct |
93 |
Correct |
46 ms |
8240 KB |
Output is correct |
94 |
Correct |
0 ms |
348 KB |
Output is correct |
95 |
Correct |
0 ms |
348 KB |
Output is correct |
96 |
Correct |
0 ms |
348 KB |
Output is correct |
97 |
Correct |
11 ms |
2396 KB |
Output is correct |
98 |
Correct |
43 ms |
8244 KB |
Output is correct |
99 |
Correct |
42 ms |
8244 KB |
Output is correct |
100 |
Correct |
41 ms |
8244 KB |
Output is correct |
101 |
Correct |
39 ms |
8256 KB |
Output is correct |
102 |
Correct |
39 ms |
8528 KB |
Output is correct |
103 |
Correct |
39 ms |
8228 KB |
Output is correct |
104 |
Correct |
39 ms |
8276 KB |
Output is correct |
105 |
Correct |
45 ms |
8240 KB |
Output is correct |