oj.uz

Submission #302541

# Submission time Handle Problem Language Result Execution time Memory
302541 2020-09-18T18:44:10 Z junseo Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 257 ms 22392 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];
bool chk[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);
		if(*max_element(all(p[i])) == 3)	return 0;
 	}

	for(int i = 0; i < n; ++i) for(int j = i + 1; j < n; ++j) if(p[i][j] == 1 && fnd(i) != fnd(j)) {
		uni(i, j);
		b[i][j] = b[j][i] = 1;
	}
 
	for(int i = 0; i < n; ++i) if(!chk[i] && i == fnd(i)) {
		vector<int> v;
		for(int j = i + 1; j < n; ++j) if(p[i][j] == 2)	v.eb(fnd(j));
		sort(all(v));
		v.erase(unique(all(v)), v.end());
 
		if(v.empty())		continue;
		if(v.size() == 1)	return 0;
 
		chk[i] = true;
		int prev = i;
		for(auto& j : v) {
			chk[j] = true;
			uni(prev, j);
			b[prev][j] = b[j][prev] = 1;
			prev = j;
		}
		b[prev][i] = b[i][prev] = 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;
		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 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 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 1280 KB Output is correct
7 Correct 252 ms 22136 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 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 1280 KB Output is correct
7 Correct 252 ms 22136 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 1 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 238 ms 22136 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 6 ms 768 KB Output is correct
17 Correct 116 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 5756 KB Output is correct
21 Correct 238 ms 22136 KB Output is correct
22 Correct 232 ms 22136 KB Output is correct
23 Correct 253 ms 22232 KB Output is correct
24 Correct 236 ms 22136 KB Output is correct
25 Correct 100 ms 12280 KB Output is correct
26 Correct 95 ms 12152 KB Output is correct
27 Correct 257 ms 22392 KB Output is correct
28 Correct 236 ms 22268 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 288 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 1 ms 256 KB Output is correct
7 Correct 1 ms 256 KB Output is correct
8 Correct 10 ms 1152 KB Output is correct
9 Correct 236 ms 22140 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 11 ms 1152 KB Output is correct
13 Correct 245 ms 22140 KB Output is correct
14 Correct 0 ms 256 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 5 ms 768 KB Output is correct
17 Correct 110 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 1 ms 384 KB Output is correct
21 Correct 59 ms 5752 KB Output is correct
22 Correct 236 ms 22136 KB Output is correct
23 Correct 233 ms 22136 KB Output is correct
24 Correct 253 ms 22136 KB Output is correct
25 Correct 96 ms 12152 KB Output is correct
26 Correct 97 ms 12152 KB Output is correct
27 Correct 236 ms 22136 KB Output is correct
28 Correct 250 ms 22136 KB Output is correct
29 Correct 94 ms 12152 KB Output is correct

Subtask #4
35.0 / 35.0

# 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 61 ms 5852 KB Output is correct
5 Correct 240 ms 22136 KB Output is correct
6 Correct 242 ms 22136 KB Output is correct
7 Correct 251 ms 22136 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 63 ms 5880 KB Output is correct
10 Correct 236 ms 22136 KB Output is correct
11 Correct 241 ms 22264 KB Output is correct
12 Correct 250 ms 22136 KB Output is correct
13 Correct 1 ms 256 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 64 ms 5884 KB Output is correct
17 Correct 237 ms 22136 KB Output is correct
18 Correct 239 ms 22140 KB Output is correct
19 Correct 233 ms 22136 KB Output is correct
20 Correct 241 ms 22140 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 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 1280 KB Output is correct
7 Correct 252 ms 22136 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 1 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 238 ms 22136 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 6 ms 768 KB Output is correct
17 Correct 116 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 5756 KB Output is correct
21 Correct 238 ms 22136 KB Output is correct
22 Correct 232 ms 22136 KB Output is correct
23 Correct 253 ms 22232 KB Output is correct
24 Correct 236 ms 22136 KB Output is correct
25 Correct 100 ms 12280 KB Output is correct
26 Correct 95 ms 12152 KB Output is correct
27 Correct 257 ms 22392 KB Output is correct
28 Correct 236 ms 22268 KB Output is correct
29 Correct 1 ms 288 KB Output is correct
30 Correct 1 ms 256 KB Output is correct
31 Correct 1 ms 256 KB Output is correct
32 Correct 1 ms 256 KB Output is correct
33 Correct 1 ms 256 KB Output is correct
34 Correct 1 ms 256 KB Output is correct
35 Correct 1 ms 256 KB Output is correct
36 Correct 10 ms 1152 KB Output is correct
37 Correct 236 ms 22140 KB Output is correct
38 Correct 1 ms 256 KB Output is correct
39 Correct 1 ms 256 KB Output is correct
40 Correct 11 ms 1152 KB Output is correct
41 Correct 245 ms 22140 KB Output is correct
42 Correct 0 ms 256 KB Output is correct
43 Correct 1 ms 384 KB Output is correct
44 Correct 5 ms 768 KB Output is correct
45 Correct 110 ms 12152 KB Output is correct
46 Correct 1 ms 256 KB Output is correct
47 Correct 0 ms 256 KB Output is correct
48 Correct 1 ms 384 KB Output is correct
49 Correct 59 ms 5752 KB Output is correct
50 Correct 236 ms 22136 KB Output is correct
51 Correct 233 ms 22136 KB Output is correct
52 Correct 253 ms 22136 KB Output is correct
53 Correct 96 ms 12152 KB Output is correct
54 Correct 97 ms 12152 KB Output is correct
55 Correct 236 ms 22136 KB Output is correct
56 Correct 250 ms 22136 KB Output is correct
57 Correct 94 ms 12152 KB Output is correct
58 Correct 1 ms 512 KB Output is correct
59 Correct 1 ms 256 KB Output is correct
60 Correct 5 ms 768 KB Output is correct
61 Correct 115 ms 12152 KB Output is correct
62 Correct 0 ms 256 KB Output is correct
63 Correct 1 ms 256 KB Output is correct
64 Correct 1 ms 256 KB Output is correct
65 Correct 61 ms 5976 KB Output is correct
66 Correct 96 ms 12152 KB Output is correct
67 Correct 102 ms 12152 KB Output is correct
68 Correct 95 ms 12280 KB Output is correct
69 Correct 99 ms 12152 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 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 1280 KB Output is correct
7 Correct 252 ms 22136 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 1 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 238 ms 22136 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 6 ms 768 KB Output is correct
17 Correct 116 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 5756 KB Output is correct
21 Correct 238 ms 22136 KB Output is correct
22 Correct 232 ms 22136 KB Output is correct
23 Correct 253 ms 22232 KB Output is correct
24 Correct 236 ms 22136 KB Output is correct
25 Correct 100 ms 12280 KB Output is correct
26 Correct 95 ms 12152 KB Output is correct
27 Correct 257 ms 22392 KB Output is correct
28 Correct 236 ms 22268 KB Output is correct
29 Correct 1 ms 288 KB Output is correct
30 Correct 1 ms 256 KB Output is correct
31 Correct 1 ms 256 KB Output is correct
32 Correct 1 ms 256 KB Output is correct
33 Correct 1 ms 256 KB Output is correct
34 Correct 1 ms 256 KB Output is correct
35 Correct 1 ms 256 KB Output is correct
36 Correct 10 ms 1152 KB Output is correct
37 Correct 236 ms 22140 KB Output is correct
38 Correct 1 ms 256 KB Output is correct
39 Correct 1 ms 256 KB Output is correct
40 Correct 11 ms 1152 KB Output is correct
41 Correct 245 ms 22140 KB Output is correct
42 Correct 0 ms 256 KB Output is correct
43 Correct 1 ms 384 KB Output is correct
44 Correct 5 ms 768 KB Output is correct
45 Correct 110 ms 12152 KB Output is correct
46 Correct 1 ms 256 KB Output is correct
47 Correct 0 ms 256 KB Output is correct
48 Correct 1 ms 384 KB Output is correct
49 Correct 59 ms 5752 KB Output is correct
50 Correct 236 ms 22136 KB Output is correct
51 Correct 233 ms 22136 KB Output is correct
52 Correct 253 ms 22136 KB Output is correct
53 Correct 96 ms 12152 KB Output is correct
54 Correct 97 ms 12152 KB Output is correct
55 Correct 236 ms 22136 KB Output is correct
56 Correct 250 ms 22136 KB Output is correct
57 Correct 94 ms 12152 KB Output is correct
58 Correct 1 ms 256 KB Output is correct
59 Correct 1 ms 256 KB Output is correct
60 Correct 1 ms 256 KB Output is correct
61 Correct 61 ms 5852 KB Output is correct
62 Correct 240 ms 22136 KB Output is correct
63 Correct 242 ms 22136 KB Output is correct
64 Correct 251 ms 22136 KB Output is correct
65 Correct 1 ms 256 KB Output is correct
66 Correct 63 ms 5880 KB Output is correct
67 Correct 236 ms 22136 KB Output is correct
68 Correct 241 ms 22264 KB Output is correct
69 Correct 250 ms 22136 KB Output is correct
70 Correct 1 ms 256 KB Output is correct
71 Correct 1 ms 256 KB Output is correct
72 Correct 1 ms 384 KB Output is correct
73 Correct 64 ms 5884 KB Output is correct
74 Correct 237 ms 22136 KB Output is correct
75 Correct 239 ms 22140 KB Output is correct
76 Correct 233 ms 22136 KB Output is correct
77 Correct 241 ms 22140 KB Output is correct
78 Correct 1 ms 512 KB Output is correct
79 Correct 1 ms 256 KB Output is correct
80 Correct 5 ms 768 KB Output is correct
81 Correct 115 ms 12152 KB Output is correct
82 Correct 0 ms 256 KB Output is correct
83 Correct 1 ms 256 KB Output is correct
84 Correct 1 ms 256 KB Output is correct
85 Correct 61 ms 5976 KB Output is correct
86 Correct 96 ms 12152 KB Output is correct
87 Correct 102 ms 12152 KB Output is correct
88 Correct 95 ms 12280 KB Output is correct
89 Correct 99 ms 12152 KB Output is correct
90 Correct 1 ms 256 KB Output is correct
91 Correct 1 ms 256 KB Output is correct
92 Correct 5 ms 640 KB Output is correct
93 Correct 102 ms 8404 KB Output is correct
94 Correct 0 ms 256 KB Output is correct
95 Correct 1 ms 256 KB Output is correct
96 Correct 1 ms 256 KB Output is correct
97 Correct 23 ms 2432 KB Output is correct
98 Correct 99 ms 8440 KB Output is correct
99 Correct 95 ms 8824 KB Output is correct
100 Correct 93 ms 8664 KB Output is correct
101 Correct 92 ms 9592 KB Output is correct
102 Correct 100 ms 8184 KB Output is correct
103 Correct 100 ms 8184 KB Output is correct
104 Correct 102 ms 8312 KB Output is correct
105 Correct 104 ms 8284 KB Output is correct