oj.uz

Submission #823113

# Submission time Handle Problem Language Result Execution time Memory
823113 2023-08-12T08:12:36 Z Sohsoh84 Connecting Supertrees (IOI20_supertrees) C++17
19 / 100
 178 ms 23700 KB 
#include "supertrees.h"
#include <bits/stdc++.h>

using namespace std;

const int MAXN = 1e5 + 10;

#define sep		' '
#define debug(x)	cerr << #x << ": " << x << endl;

int f[MAXN], sz[MAXN], L[MAXN], f2[MAXN];

vector<vector<int>> answer;

inline void add(int i, int j) {
	answer[i][j] = answer[j][i] = 1;
}

int construct(vector<vector<int>> p) {
	int n = p.size();
	for (int i = 0; i < n; i++) {
		vector<int> row;
		row.resize(n, 0);
		answer.push_back(row);
	}

	vector<int> roots;
	for (int i = 0; i < n; i++) {
		f[i] = i;
		int lst = i;
		for (int j = 0; j < i; j++)
			if (p[i][j] == 1)
				lst = j;

		if (lst != i) add(lst, i), f[i] = f[lst];
		else roots.push_back(i);
	}

	int m = roots.size();
	for (int i = 0; i < m; i++) {
		f2[i] = i;	

		int lst = i;
		for (int j = 0; j < i; j++)
			if (p[roots[i]][roots[j]] == 2)
				lst = j;

		if (lst != i) {
			add(roots[i], roots[lst]);
			f2[i] = f2[lst];
			L[f2[i]] = i;
		} else L[i] = i;

		sz[f2[i]]++;
	}

	for (int i = 0; i < m; i++) {
		if (L[i] && L[i] != i) {
			add(roots[i], roots[L[i]]);
		}

		if (sz[i] == 2) return 0;
	}

	for (int i = 0; i < n; i++) {
		for (int j = i + 1; j < n; j++) {
			if (f[i] == f[j] && p[i][j] != 1) return 0;
			if (f2[f[i]] == f2[f[j]] && p[i][j] != 2) return 0;
			if (f2[f[i]] != f2[f[j]] && p[i][j] != 0) return 0;
		}
	}

	build(answer);
	return 1;
}

Subtask #1
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Incorrect 0 ms 212 KB Answer gives possible 0 while actual possible 1
3 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Incorrect 0 ms 212 KB Answer gives possible 0 while actual possible 1
3 Halted 0 ms 0 KB -

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 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 7 ms 1216 KB Output is correct
9 Correct 159 ms 23548 KB Output is correct
10 Correct 0 ms 300 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 7 ms 1188 KB Output is correct
13 Correct 165 ms 23700 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 5 ms 804 KB Output is correct
17 Correct 70 ms 13708 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 38 ms 6220 KB Output is correct
22 Correct 155 ms 23552 KB Output is correct
23 Correct 178 ms 23564 KB Output is correct
24 Correct 157 ms 23632 KB Output is correct
25 Correct 67 ms 13604 KB Output is correct
26 Correct 66 ms 13616 KB Output is correct
27 Correct 154 ms 23524 KB Output is correct
28 Correct 177 ms 23628 KB Output is correct
29 Correct 69 ms 13716 KB Output is correct

Subtask #4
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Incorrect 0 ms 212 KB Answer gives possible 0 while actual possible 1
4 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 Incorrect 0 ms 212 KB Answer gives possible 0 while actual possible 1
3 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 Incorrect 0 ms 212 KB Answer gives possible 0 while actual possible 1
3 Halted 0 ms 0 KB -