oj.uz

Submission #300321

# Submission time Handle Problem Language Result Execution time Memory
300321 2020-09-17T05:17:25 Z junseo Connecting Supertrees (IOI20_supertrees) C++17
21 / 100
 257 ms 22360 KB 
#include "supertrees.h"
#include <bits/stdc++.h>
#define fi first
#define se second
#define eb emplace_back
#define all(v) (v).begin(), (v).end()
#define rmin(r, x) r = min(r, x)
#define rmax(r, x) r = max(r, x)
#define ends ' '
#define endl '\n'
#define fastio ios_base::sync_with_stdio(0), cin.tie(0)
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

const int maxn = 1e3 + 10;

int n, pa[maxn];
vector<vector<int>> b;

int fnd(int x) { return (pa[x] < 0 ? x : pa[x] = fnd(pa[x])); }
void uni(int a, int b) {
	a = fnd(a), b = fnd(b);
	if(a == b)	return;
	pa[a] = b;
}

int construct(vector<std::vector<int>> p) {
	memset(pa, -1, sizeof(pa));
	n = p.size();
	b.resize(n);
	for(int i = 0; i < n; ++i)	b[i].resize(n);
	for(int i = 0; i < n; ++i) for(int j = i + 1; j < n; ++j) if(p[i][j] && fnd(i) != fnd(j)) {
		uni(i, j);
		b[i][j] = b[j][i] = 1;
	}

	for(int i = 0; i < n; ++i) for(int j = i + 1; j < n; ++j) {
		if(!p[i][j] && fnd(i) == fnd(j))	return 0;
	}
	build(b);
	return 1;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 1 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 11 ms 1152 KB Output is correct
7 Correct 256 ms 22136 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 1 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 11 ms 1152 KB Output is correct
7 Correct 256 ms 22136 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 0 ms 256 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 10 ms 1152 KB Output is correct
13 Correct 246 ms 22360 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 1 ms 288 KB Output is correct
16 Correct 5 ms 768 KB Output is correct
17 Correct 118 ms 12152 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 0 ms 256 KB Output is correct
20 Correct 60 ms 5752 KB Output is correct
21 Correct 243 ms 22136 KB Output is correct
22 Correct 256 ms 22136 KB Output is correct
23 Correct 257 ms 22136 KB Output is correct
24 Correct 239 ms 22136 KB Output is correct
25 Correct 103 ms 12152 KB Output is correct
26 Correct 105 ms 12156 KB Output is correct
27 Correct 257 ms 22136 KB Output is correct
28 Correct 242 ms 22140 KB Output is correct

Subtask #3
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Incorrect 1 ms 256 KB Answer gives possible 1 while actual possible 0
5 Halted 0 ms 0 KB -

Subtask #4
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Incorrect 1 ms 256 KB Too few ways to get from 0 to 1, should be 2 found 1
3 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 1 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 11 ms 1152 KB Output is correct
7 Correct 256 ms 22136 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 0 ms 256 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 10 ms 1152 KB Output is correct
13 Correct 246 ms 22360 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 1 ms 288 KB Output is correct
16 Correct 5 ms 768 KB Output is correct
17 Correct 118 ms 12152 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 0 ms 256 KB Output is correct
20 Correct 60 ms 5752 KB Output is correct
21 Correct 243 ms 22136 KB Output is correct
22 Correct 256 ms 22136 KB Output is correct
23 Correct 257 ms 22136 KB Output is correct
24 Correct 239 ms 22136 KB Output is correct
25 Correct 103 ms 12152 KB Output is correct
26 Correct 105 ms 12156 KB Output is correct
27 Correct 257 ms 22136 KB Output is correct
28 Correct 242 ms 22140 KB Output is correct
29 Correct 1 ms 256 KB Output is correct
30 Correct 1 ms 256 KB Output is correct
31 Correct 1 ms 256 KB Output is correct
32 Incorrect 1 ms 256 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 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 1 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 11 ms 1152 KB Output is correct
7 Correct 256 ms 22136 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 0 ms 256 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 10 ms 1152 KB Output is correct
13 Correct 246 ms 22360 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 1 ms 288 KB Output is correct
16 Correct 5 ms 768 KB Output is correct
17 Correct 118 ms 12152 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 0 ms 256 KB Output is correct
20 Correct 60 ms 5752 KB Output is correct
21 Correct 243 ms 22136 KB Output is correct
22 Correct 256 ms 22136 KB Output is correct
23 Correct 257 ms 22136 KB Output is correct
24 Correct 239 ms 22136 KB Output is correct
25 Correct 103 ms 12152 KB Output is correct
26 Correct 105 ms 12156 KB Output is correct
27 Correct 257 ms 22136 KB Output is correct
28 Correct 242 ms 22140 KB Output is correct
29 Correct 1 ms 256 KB Output is correct
30 Correct 1 ms 256 KB Output is correct
31 Correct 1 ms 256 KB Output is correct
32 Incorrect 1 ms 256 KB Answer gives possible 1 while actual possible 0
33 Halted 0 ms 0 KB -