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Submission #819430

# Submission time Handle Problem Language Result Execution time Memory
819430 2023-08-10T10:42:57 Z Abrar_Al_Samit Connecting Supertrees (IOI20_supertrees) C++17
40 / 100
 187 ms 24060 KB 
#include "supertrees.h"
#include <bits/stdc++.h>

using namespace std;


const int nax = 1000;

int par[nax], sz[nax];
vector<int>L[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)) {
		if(sz[i]>1) {

			for(int x=0; x+1<sz[i]; ++x) {
				ans[L[i][x]][L[i][x+1]] = ans[L[i][x+1]][L[i][x]] = 1;
			}
			if(p[i][L[i][1]]==2) {
				if(sz[i]<=2) return 0;
				
				for(int x=0; x<sz[i]; ++x) {
					for(int y=x+1; y<sz[i]; ++y) {
						if(p[L[i][x]][L[i][y]]!=2) {
							return 0;
						}
					}
				}

				ans[L[i][0]][L[i][sz[i]-1]] = ans[L[i][sz[i]-1]][L[i][0]] = 1;
			}
		} 
	}	
	build(ans);
	return 1;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 328 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 7 ms 1188 KB Output is correct
7 Correct 165 ms 22120 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 328 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 7 ms 1188 KB Output is correct
7 Correct 165 ms 22120 KB Output is correct
8 Correct 1 ms 328 KB Output is correct
9 Correct 1 ms 212 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 1232 KB Output is correct
13 Correct 169 ms 22196 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 4 ms 724 KB Output is correct
17 Correct 87 ms 8352 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 324 KB Output is correct
20 Correct 41 ms 5868 KB Output is correct
21 Correct 165 ms 22124 KB Output is correct
22 Correct 169 ms 22144 KB Output is correct
23 Correct 172 ms 22172 KB Output is correct
24 Correct 164 ms 22172 KB Output is correct
25 Correct 66 ms 8344 KB Output is correct
26 Correct 66 ms 8316 KB Output is correct
27 Correct 167 ms 22188 KB Output is correct
28 Correct 187 ms 22220 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 0 ms 324 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 340 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 324 KB Output is correct
8 Correct 7 ms 1264 KB Output is correct
9 Correct 159 ms 24048 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 324 KB Output is correct
12 Correct 7 ms 1240 KB Output is correct
13 Correct 162 ms 24040 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 4 ms 724 KB Output is correct
17 Correct 77 ms 10132 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 324 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 41 ms 6288 KB Output is correct
22 Correct 161 ms 23952 KB Output is correct
23 Correct 171 ms 23948 KB Output is correct
24 Correct 167 ms 23952 KB Output is correct
25 Correct 68 ms 14040 KB Output is correct
26 Correct 74 ms 10124 KB Output is correct
27 Correct 162 ms 24060 KB Output is correct
28 Correct 168 ms 23964 KB Output is correct
29 Correct 70 ms 14148 KB Output is correct

Subtask #4
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 41 ms 5964 KB Output is correct
5 Correct 161 ms 22248 KB Output is correct
6 Correct 167 ms 22156 KB Output is correct
7 Correct 169 ms 22224 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 42 ms 5836 KB Output is correct
10 Correct 169 ms 22132 KB Output is correct
11 Correct 165 ms 22176 KB Output is correct
12 Correct 173 ms 22176 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Incorrect 0 ms 340 KB Answer gives possible 0 while actual possible 1
16 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 328 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 7 ms 1188 KB Output is correct
7 Correct 165 ms 22120 KB Output is correct
8 Correct 1 ms 328 KB Output is correct
9 Correct 1 ms 212 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 1232 KB Output is correct
13 Correct 169 ms 22196 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 4 ms 724 KB Output is correct
17 Correct 87 ms 8352 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 324 KB Output is correct
20 Correct 41 ms 5868 KB Output is correct
21 Correct 165 ms 22124 KB Output is correct
22 Correct 169 ms 22144 KB Output is correct
23 Correct 172 ms 22172 KB Output is correct
24 Correct 164 ms 22172 KB Output is correct
25 Correct 66 ms 8344 KB Output is correct
26 Correct 66 ms 8316 KB Output is correct
27 Correct 167 ms 22188 KB Output is correct
28 Correct 187 ms 22220 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 0 ms 324 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 340 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 0 ms 324 KB Output is correct
36 Correct 7 ms 1264 KB Output is correct
37 Correct 159 ms 24048 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 1 ms 324 KB Output is correct
40 Correct 7 ms 1240 KB Output is correct
41 Correct 162 ms 24040 KB Output is correct
42 Correct 0 ms 212 KB Output is correct
43 Correct 1 ms 212 KB Output is correct
44 Correct 4 ms 724 KB Output is correct
45 Correct 77 ms 10132 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 0 ms 324 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 41 ms 6288 KB Output is correct
50 Correct 161 ms 23952 KB Output is correct
51 Correct 171 ms 23948 KB Output is correct
52 Correct 167 ms 23952 KB Output is correct
53 Correct 68 ms 14040 KB Output is correct
54 Correct 74 ms 10124 KB Output is correct
55 Correct 162 ms 24060 KB Output is correct
56 Correct 168 ms 23964 KB Output is correct
57 Correct 70 ms 14148 KB Output is correct
58 Correct 0 ms 212 KB Output is correct
59 Correct 1 ms 212 KB Output is correct
60 Correct 3 ms 724 KB Output is correct
61 Correct 75 ms 10140 KB Output is correct
62 Correct 0 ms 212 KB Output is correct
63 Correct 1 ms 340 KB Output is correct
64 Correct 1 ms 324 KB Output is correct
65 Incorrect 18 ms 3728 KB Answer gives possible 0 while actual possible 1
66 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 328 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 7 ms 1188 KB Output is correct
7 Correct 165 ms 22120 KB Output is correct
8 Correct 1 ms 328 KB Output is correct
9 Correct 1 ms 212 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 1232 KB Output is correct
13 Correct 169 ms 22196 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 4 ms 724 KB Output is correct
17 Correct 87 ms 8352 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 324 KB Output is correct
20 Correct 41 ms 5868 KB Output is correct
21 Correct 165 ms 22124 KB Output is correct
22 Correct 169 ms 22144 KB Output is correct
23 Correct 172 ms 22172 KB Output is correct
24 Correct 164 ms 22172 KB Output is correct
25 Correct 66 ms 8344 KB Output is correct
26 Correct 66 ms 8316 KB Output is correct
27 Correct 167 ms 22188 KB Output is correct
28 Correct 187 ms 22220 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 0 ms 324 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 340 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 0 ms 324 KB Output is correct
36 Correct 7 ms 1264 KB Output is correct
37 Correct 159 ms 24048 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 1 ms 324 KB Output is correct
40 Correct 7 ms 1240 KB Output is correct
41 Correct 162 ms 24040 KB Output is correct
42 Correct 0 ms 212 KB Output is correct
43 Correct 1 ms 212 KB Output is correct
44 Correct 4 ms 724 KB Output is correct
45 Correct 77 ms 10132 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 0 ms 324 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 41 ms 6288 KB Output is correct
50 Correct 161 ms 23952 KB Output is correct
51 Correct 171 ms 23948 KB Output is correct
52 Correct 167 ms 23952 KB Output is correct
53 Correct 68 ms 14040 KB Output is correct
54 Correct 74 ms 10124 KB Output is correct
55 Correct 162 ms 24060 KB Output is correct
56 Correct 168 ms 23964 KB Output is correct
57 Correct 70 ms 14148 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 41 ms 5964 KB Output is correct
62 Correct 161 ms 22248 KB Output is correct
63 Correct 167 ms 22156 KB Output is correct
64 Correct 169 ms 22224 KB Output is correct
65 Correct 0 ms 212 KB Output is correct
66 Correct 42 ms 5836 KB Output is correct
67 Correct 169 ms 22132 KB Output is correct
68 Correct 165 ms 22176 KB Output is correct
69 Correct 173 ms 22176 KB Output is correct
70 Correct 1 ms 340 KB Output is correct
71 Correct 0 ms 212 KB Output is correct
72 Incorrect 0 ms 340 KB Answer gives possible 0 while actual possible 1
73 Halted 0 ms 0 KB -