oj.uz

Submission #1115704

# Submission time Handle Problem Language Result Execution time Memory
1115704 2024-11-20T20:26:55 Z Pekiban Connecting Supertrees (IOI20_supertrees) C++17
56 / 100
 143 ms 28048 KB 
#include "supertrees.h"
#include <bits/stdc++.h>

using namespace std;
#define pb push_back

const int N = 1001;
struct dsu {
	int p[N], sz[N];
	void init(int n) {
		fill(sz, sz+n, 1);
		iota(p, p+n, 0);
	}
	int get(int u) {
		if (u == p[u])	return u;
		return p[u] = get(p[u]);
	}
	bool unite(int u, int v) {
		u = get(u), v = get(v);
		if (u == v)	return 0;
		if (sz[u] < sz[v])	swap(u, v);
		sz[u] += sz[v];
		p[v] = u;
		return 1;
	}
} D;
bool vis[N];
int n;
vector<int> E;
vector<vector<int>> p;
void dfs(int s) {
	vis[s] = 1;
	E.pb(s);
	for (int i = 0; i < n; ++i) {
		if (p[s][D.get(i)] == 2 && !vis[D.get(i)])	dfs(D.get(i));
	}
}
int construct(vector<vector<int>> P) {
	p = P; n = p.size();
	D.init(n);
	vector<vector<int>> A(n, vector<int>(n, 0));
	for (int i = 0; i < n; ++i) {
		for (int j = 0; j < n; ++j) {
			if (p[i][j] == 1) {
				if (D.unite(i, j))	A[i][j] = A[j][i] = 1;
			}
		}
	}
	for (int i = 0; i < n; ++i) {
		for (int j = 0; j < n; ++j) {
			if (p[i][j] == 3 || p[i][j] != p[D.get(i)][D.get(j)])	return 0;
		}
	}
	for (int i = 0; i < n; ++i) {
		if (!vis[D.get(i)])	{
			dfs(D.get(i));
			for (int i = 0; i < (int)E.size(); ++i) {
				for (int j = 0; j < i; ++j) {
					if (p[E[i]][E[j]] != 2)	return 0;
				}
			}
			if (E.size() == 1) {
				E.clear();
				continue;
			}
			for (int i = 0; i+1 < (int)E.size(); ++i)	A[E[i]][E[i+1]] = A[E[i+1]][E[i]] = 1;
			A[E.back()][E[0]] = A[E[0]][E.back()] = 1;
			E.clear();
		}
	}
	build(A);
	return 1;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 504 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 6 ms 1360 KB Output is correct
7 Correct 124 ms 25996 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 504 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 6 ms 1360 KB Output is correct
7 Correct 124 ms 25996 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 512 KB Output is correct
12 Correct 9 ms 1360 KB Output is correct
13 Correct 122 ms 26148 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 4 ms 860 KB Output is correct
17 Correct 77 ms 16152 KB Output is correct
18 Correct 1 ms 504 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 35 ms 6944 KB Output is correct
21 Correct 138 ms 25928 KB Output is correct
22 Correct 133 ms 26144 KB Output is correct
23 Correct 138 ms 26148 KB Output is correct
24 Correct 129 ms 25928 KB Output is correct
25 Correct 63 ms 16200 KB Output is correct
26 Correct 65 ms 16200 KB Output is correct
27 Correct 143 ms 26148 KB Output is correct
28 Correct 133 ms 25928 KB Output is correct

Subtask #3
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Incorrect 1 ms 348 KB Answer gives possible 1 while actual possible 0
5 Halted 0 ms 0 KB -

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 32 ms 6908 KB Output is correct
5 Correct 129 ms 26384 KB Output is correct
6 Correct 128 ms 25928 KB Output is correct
7 Correct 140 ms 25932 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 35 ms 7408 KB Output is correct
10 Correct 136 ms 27976 KB Output is correct
11 Correct 135 ms 27872 KB Output is correct
12 Correct 143 ms 27976 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 34 ms 7240 KB Output is correct
17 Correct 130 ms 27976 KB Output is correct
18 Correct 141 ms 27976 KB Output is correct
19 Correct 127 ms 28048 KB Output is correct
20 Correct 134 ms 27976 KB Output is correct

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 504 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 6 ms 1360 KB Output is correct
7 Correct 124 ms 25996 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 512 KB Output is correct
12 Correct 9 ms 1360 KB Output is correct
13 Correct 122 ms 26148 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 4 ms 860 KB Output is correct
17 Correct 77 ms 16152 KB Output is correct
18 Correct 1 ms 504 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 35 ms 6944 KB Output is correct
21 Correct 138 ms 25928 KB Output is correct
22 Correct 133 ms 26144 KB Output is correct
23 Correct 138 ms 26148 KB Output is correct
24 Correct 129 ms 25928 KB Output is correct
25 Correct 63 ms 16200 KB Output is correct
26 Correct 65 ms 16200 KB Output is correct
27 Correct 143 ms 26148 KB Output is correct
28 Correct 133 ms 25928 KB Output is correct
29 Correct 1 ms 336 KB Output is correct
30 Correct 1 ms 336 KB Output is correct
31 Correct 1 ms 336 KB Output is correct
32 Incorrect 1 ms 348 KB Answer gives possible 1 while actual possible 0
33 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 504 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 6 ms 1360 KB Output is correct
7 Correct 124 ms 25996 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 512 KB Output is correct
12 Correct 9 ms 1360 KB Output is correct
13 Correct 122 ms 26148 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 4 ms 860 KB Output is correct
17 Correct 77 ms 16152 KB Output is correct
18 Correct 1 ms 504 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 35 ms 6944 KB Output is correct
21 Correct 138 ms 25928 KB Output is correct
22 Correct 133 ms 26144 KB Output is correct
23 Correct 138 ms 26148 KB Output is correct
24 Correct 129 ms 25928 KB Output is correct
25 Correct 63 ms 16200 KB Output is correct
26 Correct 65 ms 16200 KB Output is correct
27 Correct 143 ms 26148 KB Output is correct
28 Correct 133 ms 25928 KB Output is correct
29 Correct 1 ms 336 KB Output is correct
30 Correct 1 ms 336 KB Output is correct
31 Correct 1 ms 336 KB Output is correct
32 Incorrect 1 ms 348 KB Answer gives possible 1 while actual possible 0
33 Halted 0 ms 0 KB -