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Submission #819883

# Submission time Handle Problem Language Result Execution time Memory
819883 2023-08-10T14:54:21 Z Abrar_Al_Samit Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 182 ms 24212 KB 
#include "supertrees.h"
#include <bits/stdc++.h>

using namespace std;


const int nax = 1000;

int par[nax], sz[nax];
vector<int>L[nax];
bool done[nax];

int find(int v) {
	return par[v] = (v == par[v]) ? v : find(par[v]);
}
void unite(int u, int v) {
	u = find(u), v = find(v);
	if(u==v) return;

	if(sz[u] < sz[v]) swap(u, v);

	for(int x : L[v]) {
		L[u].push_back(x);
	}
	sz[u] += sz[v];
	par[v] = u;
}
int construct(vector<vector<int>> p) {
	int n = p.size();

	for(int i=0; i<n; ++i) {
		par[i] = i, sz[i] = 1;
		L[i] = {i};
	}

	for(int i=0; i<n; ++i) {
		for(int j=0; j<n; ++j) if(p[i][j]) {
			unite(i, j);
		}
	}
	for(int i=0; i<n; ++i) {
		for(int j=0; j<n; ++j) if(!p[i][j]) {
			if(find(i) == find(j)) return 0;
		}
	}
	vector<vector<int>>ans(n, vector<int>(n));


	for(int i=0; i<n; ++i) if(i == find(i)) {
		vector<int>heads;
		for(int v : L[i]) if(!done[v]) {
			done[v] = true;

			set<int>curL;
			for(int u=0; u<n; ++u) {
				if(p[u][v]==1 && u!=v) {
					ans[u][v] = ans[v][u] = 1;
					done[u] = true;
					curL.insert(u);
				}
			}

			for(int x : curL) {
				for(int y : curL) {
					if(p[x][y]!=1) return 0;
				}
			}
			curL.insert(v);
			for(int x : L[i]) {
				for(int y : curL) {
					if(!curL.count(x)) {
						if(p[x][y]!=2) return 0;
					}
				}
			}

			heads.push_back(v);
		}

		if(heads.size()==2) return 0;
		if(heads.size()==1) continue;

		for(int i=0; i<heads.size(); ++i) {
			int v = heads[i];
			int u = heads[(i+1)%heads.size()];
			ans[u][v] = ans[v][u] = 1;
		}
	}

	build(ans);
	return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:83:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   83 |   for(int i=0; i<heads.size(); ++i) {
      |                ~^~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 8 ms 1180 KB Output is correct
7 Correct 182 ms 22012 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 8 ms 1180 KB Output is correct
7 Correct 182 ms 22012 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 7 ms 1208 KB Output is correct
13 Correct 157 ms 22048 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 3 ms 724 KB Output is correct
17 Correct 76 ms 10128 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 43 ms 6256 KB Output is correct
21 Correct 163 ms 24060 KB Output is correct
22 Correct 162 ms 24080 KB Output is correct
23 Correct 179 ms 24212 KB Output is correct
24 Correct 159 ms 24036 KB Output is correct
25 Correct 66 ms 10136 KB Output is correct
26 Correct 72 ms 10188 KB Output is correct
27 Correct 173 ms 24076 KB Output is correct
28 Correct 158 ms 24012 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 7 ms 1232 KB Output is correct
9 Correct 160 ms 23952 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 7 ms 1212 KB Output is correct
13 Correct 170 ms 23964 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 3 ms 724 KB Output is correct
17 Correct 75 ms 10124 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 42 ms 6288 KB Output is correct
22 Correct 162 ms 23980 KB Output is correct
23 Correct 164 ms 23968 KB Output is correct
24 Correct 173 ms 24012 KB Output is correct
25 Correct 68 ms 14108 KB Output is correct
26 Correct 65 ms 10176 KB Output is correct
27 Correct 162 ms 23948 KB Output is correct
28 Correct 171 ms 23996 KB Output is correct
29 Correct 70 ms 14092 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 40 ms 5788 KB Output is correct
5 Correct 164 ms 22172 KB Output is correct
6 Correct 160 ms 22092 KB Output is correct
7 Correct 172 ms 22036 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 40 ms 5756 KB Output is correct
10 Correct 161 ms 22060 KB Output is correct
11 Correct 163 ms 22060 KB Output is correct
12 Correct 168 ms 22048 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 40 ms 5800 KB Output is correct
17 Correct 161 ms 22044 KB Output is correct
18 Correct 160 ms 22060 KB Output is correct
19 Correct 158 ms 22060 KB Output is correct
20 Correct 159 ms 22060 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 8 ms 1180 KB Output is correct
7 Correct 182 ms 22012 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 7 ms 1208 KB Output is correct
13 Correct 157 ms 22048 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 3 ms 724 KB Output is correct
17 Correct 76 ms 10128 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 43 ms 6256 KB Output is correct
21 Correct 163 ms 24060 KB Output is correct
22 Correct 162 ms 24080 KB Output is correct
23 Correct 179 ms 24212 KB Output is correct
24 Correct 159 ms 24036 KB Output is correct
25 Correct 66 ms 10136 KB Output is correct
26 Correct 72 ms 10188 KB Output is correct
27 Correct 173 ms 24076 KB Output is correct
28 Correct 158 ms 24012 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 1 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 1 ms 340 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 7 ms 1232 KB Output is correct
37 Correct 160 ms 23952 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 1 ms 212 KB Output is correct
40 Correct 7 ms 1212 KB Output is correct
41 Correct 170 ms 23964 KB Output is correct
42 Correct 0 ms 212 KB Output is correct
43 Correct 0 ms 212 KB Output is correct
44 Correct 3 ms 724 KB Output is correct
45 Correct 75 ms 10124 KB Output is correct
46 Correct 0 ms 332 KB Output is correct
47 Correct 0 ms 212 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 42 ms 6288 KB Output is correct
50 Correct 162 ms 23980 KB Output is correct
51 Correct 164 ms 23968 KB Output is correct
52 Correct 173 ms 24012 KB Output is correct
53 Correct 68 ms 14108 KB Output is correct
54 Correct 65 ms 10176 KB Output is correct
55 Correct 162 ms 23948 KB Output is correct
56 Correct 171 ms 23996 KB Output is correct
57 Correct 70 ms 14092 KB Output is correct
58 Correct 1 ms 340 KB Output is correct
59 Correct 1 ms 212 KB Output is correct
60 Correct 3 ms 696 KB Output is correct
61 Correct 78 ms 10136 KB Output is correct
62 Correct 0 ms 212 KB Output is correct
63 Correct 0 ms 340 KB Output is correct
64 Correct 0 ms 332 KB Output is correct
65 Correct 41 ms 6216 KB Output is correct
66 Correct 66 ms 10184 KB Output is correct
67 Correct 66 ms 10132 KB Output is correct
68 Correct 67 ms 10132 KB Output is correct
69 Correct 68 ms 14100 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 8 ms 1180 KB Output is correct
7 Correct 182 ms 22012 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 7 ms 1208 KB Output is correct
13 Correct 157 ms 22048 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 3 ms 724 KB Output is correct
17 Correct 76 ms 10128 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 43 ms 6256 KB Output is correct
21 Correct 163 ms 24060 KB Output is correct
22 Correct 162 ms 24080 KB Output is correct
23 Correct 179 ms 24212 KB Output is correct
24 Correct 159 ms 24036 KB Output is correct
25 Correct 66 ms 10136 KB Output is correct
26 Correct 72 ms 10188 KB Output is correct
27 Correct 173 ms 24076 KB Output is correct
28 Correct 158 ms 24012 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 1 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 1 ms 340 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 7 ms 1232 KB Output is correct
37 Correct 160 ms 23952 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 1 ms 212 KB Output is correct
40 Correct 7 ms 1212 KB Output is correct
41 Correct 170 ms 23964 KB Output is correct
42 Correct 0 ms 212 KB Output is correct
43 Correct 0 ms 212 KB Output is correct
44 Correct 3 ms 724 KB Output is correct
45 Correct 75 ms 10124 KB Output is correct
46 Correct 0 ms 332 KB Output is correct
47 Correct 0 ms 212 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 42 ms 6288 KB Output is correct
50 Correct 162 ms 23980 KB Output is correct
51 Correct 164 ms 23968 KB Output is correct
52 Correct 173 ms 24012 KB Output is correct
53 Correct 68 ms 14108 KB Output is correct
54 Correct 65 ms 10176 KB Output is correct
55 Correct 162 ms 23948 KB Output is correct
56 Correct 171 ms 23996 KB Output is correct
57 Correct 70 ms 14092 KB Output is correct
58 Correct 0 ms 212 KB Output is correct
59 Correct 0 ms 212 KB Output is correct
60 Correct 0 ms 212 KB Output is correct
61 Correct 40 ms 5788 KB Output is correct
62 Correct 164 ms 22172 KB Output is correct
63 Correct 160 ms 22092 KB Output is correct
64 Correct 172 ms 22036 KB Output is correct
65 Correct 0 ms 212 KB Output is correct
66 Correct 40 ms 5756 KB Output is correct
67 Correct 161 ms 22060 KB Output is correct
68 Correct 163 ms 22060 KB Output is correct
69 Correct 168 ms 22048 KB Output is correct
70 Correct 0 ms 212 KB Output is correct
71 Correct 0 ms 212 KB Output is correct
72 Correct 1 ms 212 KB Output is correct
73 Correct 40 ms 5800 KB Output is correct
74 Correct 161 ms 22044 KB Output is correct
75 Correct 160 ms 22060 KB Output is correct
76 Correct 158 ms 22060 KB Output is correct
77 Correct 159 ms 22060 KB Output is correct
78 Correct 1 ms 340 KB Output is correct
79 Correct 1 ms 212 KB Output is correct
80 Correct 3 ms 696 KB Output is correct
81 Correct 78 ms 10136 KB Output is correct
82 Correct 0 ms 212 KB Output is correct
83 Correct 0 ms 340 KB Output is correct
84 Correct 0 ms 332 KB Output is correct
85 Correct 41 ms 6216 KB Output is correct
86 Correct 66 ms 10184 KB Output is correct
87 Correct 66 ms 10132 KB Output is correct
88 Correct 67 ms 10132 KB Output is correct
89 Correct 68 ms 14100 KB Output is correct
90 Correct 0 ms 212 KB Output is correct
91 Correct 0 ms 212 KB Output is correct
92 Correct 3 ms 724 KB Output is correct
93 Correct 73 ms 10132 KB Output is correct
94 Correct 1 ms 340 KB Output is correct
95 Correct 0 ms 212 KB Output is correct
96 Correct 0 ms 212 KB Output is correct
97 Correct 16 ms 2772 KB Output is correct
98 Correct 66 ms 10140 KB Output is correct
99 Correct 65 ms 10188 KB Output is correct
100 Correct 66 ms 10148 KB Output is correct
101 Correct 70 ms 14112 KB Output is correct
102 Correct 73 ms 14100 KB Output is correct
103 Correct 73 ms 14156 KB Output is correct
104 Correct 73 ms 14180 KB Output is correct
105 Correct 74 ms 10128 KB Output is correct