oj.uz

Submission #314555

# Submission time Handle Problem Language Result Execution time Memory
314555 2020-10-20T09:57:46 Z kostia244 Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 266 ms 22520 KB 
#include "supertrees.h"
#include <bits/stdc++.h>
using namespace std;
const int maxn = 1<<12;
int n;
vector<vector<int>> res;
struct dsu {
	vector<int> c[maxn];
	int p[maxn];
	dsu(int n = 0) {
		for(int i = 0; i < n; i++) {
			p[i] = i;
			c[i].push_back(i);
		}
	}
	int par(int a) {
		if(p[a] == a) return a;
		return a = par(p[a]);
	}
	void unite(int i, int j) {
		i = par(i), j = par(j);
		if(i == j) return;
		if(c[i].size() < c[j].size()) swap(i, j);
		for(auto x : c[j]) c[i].push_back(x);
		p[j] = i;
	}
};
int construct(std::vector<std::vector<int>> p) {
	for(auto i : p) for(auto j : i) if(j == 3) return 0;
	n = p.size();
	res.resize(n, vector<int>(n, 0));
	dsu c1(n), c2(n);
	for(int i = 0; i < n; i++)
		for(int j = 0; j < n; j++)
			if(p[i][j] == 1) c1.unite(i, j);
	for(int i = 0; i< n; i++)
		for(int j = 0; j < n; j++) {
			int x = c1.par(i), y = c1.par(j);
			if(p[i][j] != p[x][y]) return 0;
		}
	for(int i = 0; i < n; i++) if(c1.par(i) == i)
		for(int j = 0; j < n; j++) if(c1.par(j) == j) {
			if(p[i][j] == 2) {
				c2.unite(i, j);
			}
		}
	for(int i = 0; i < n; i++) {
		if(c1.par(i) == i) {
			int lst = -1;
			for(auto x : c1.c[i]) {
				if(lst != -1) res[lst][x] = 1;
				lst = x;
			}
		}
		if(c2.par(i) == i) {
			if(c2.c[i].size() == 1) continue;
			if(c2.c[i].size() == 2) return 0;
			for(auto x : c2.c[i])
			for(auto y : c2.c[i])
			if(p[x][y] != 2 && x != y) return 0;
			int lst = -1;
			c2.c[i].push_back(c2.c[i][0]);
			for(auto x : c2.c[i]) {
				if(lst != -1) res[lst][x] = 1;
				lst = x;
			}
		}
	}
	for(int i = 0; i < n; i++)
		for(int j = 0; j < n; j++) if(res[i][j] == 1) res[j][i] = 1;
	build(res);
	return 1;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 512 KB Output is correct
2 Correct 1 ms 512 KB Output is correct
3 Correct 1 ms 512 KB Output is correct
4 Correct 1 ms 512 KB Output is correct
5 Correct 1 ms 512 KB Output is correct
6 Correct 11 ms 1408 KB Output is correct
7 Correct 255 ms 22392 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 512 KB Output is correct
2 Correct 1 ms 512 KB Output is correct
3 Correct 1 ms 512 KB Output is correct
4 Correct 1 ms 512 KB Output is correct
5 Correct 1 ms 512 KB Output is correct
6 Correct 11 ms 1408 KB Output is correct
7 Correct 255 ms 22392 KB Output is correct
8 Correct 1 ms 512 KB Output is correct
9 Correct 1 ms 512 KB Output is correct
10 Correct 1 ms 512 KB Output is correct
11 Correct 1 ms 512 KB Output is correct
12 Correct 10 ms 1408 KB Output is correct
13 Correct 245 ms 22392 KB Output is correct
14 Correct 1 ms 512 KB Output is correct
15 Correct 1 ms 544 KB Output is correct
16 Correct 6 ms 1024 KB Output is correct
17 Correct 120 ms 12408 KB Output is correct
18 Correct 1 ms 640 KB Output is correct
19 Correct 1 ms 512 KB Output is correct
20 Correct 62 ms 6008 KB Output is correct
21 Correct 252 ms 22392 KB Output is correct
22 Correct 245 ms 22520 KB Output is correct
23 Correct 255 ms 22396 KB Output is correct
24 Correct 246 ms 22392 KB Output is correct
25 Correct 107 ms 12408 KB Output is correct
26 Correct 104 ms 12408 KB Output is correct
27 Correct 255 ms 22392 KB Output is correct
28 Correct 244 ms 22416 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 512 KB Output is correct
2 Correct 1 ms 512 KB Output is correct
3 Correct 1 ms 512 KB Output is correct
4 Correct 1 ms 512 KB Output is correct
5 Correct 1 ms 512 KB Output is correct
6 Correct 1 ms 512 KB Output is correct
7 Correct 1 ms 512 KB Output is correct
8 Correct 10 ms 1408 KB Output is correct
9 Correct 242 ms 22396 KB Output is correct
10 Correct 1 ms 512 KB Output is correct
11 Correct 1 ms 512 KB Output is correct
12 Correct 11 ms 1408 KB Output is correct
13 Correct 261 ms 22392 KB Output is correct
14 Correct 1 ms 512 KB Output is correct
15 Correct 1 ms 512 KB Output is correct
16 Correct 6 ms 1024 KB Output is correct
17 Correct 125 ms 12408 KB Output is correct
18 Correct 1 ms 512 KB Output is correct
19 Correct 0 ms 512 KB Output is correct
20 Correct 1 ms 512 KB Output is correct
21 Correct 61 ms 6008 KB Output is correct
22 Correct 244 ms 22392 KB Output is correct
23 Correct 244 ms 22520 KB Output is correct
24 Correct 266 ms 22360 KB Output is correct
25 Correct 109 ms 12408 KB Output is correct
26 Correct 112 ms 12408 KB Output is correct
27 Correct 241 ms 22396 KB Output is correct
28 Correct 260 ms 22392 KB Output is correct
29 Correct 109 ms 12408 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 512 KB Output is correct
2 Correct 1 ms 512 KB Output is correct
3 Correct 1 ms 512 KB Output is correct
4 Correct 61 ms 6008 KB Output is correct
5 Correct 249 ms 22392 KB Output is correct
6 Correct 243 ms 22340 KB Output is correct
7 Correct 254 ms 22392 KB Output is correct
8 Correct 1 ms 512 KB Output is correct
9 Correct 61 ms 5996 KB Output is correct
10 Correct 258 ms 22392 KB Output is correct
11 Correct 244 ms 22520 KB Output is correct
12 Correct 258 ms 22392 KB Output is correct
13 Correct 1 ms 512 KB Output is correct
14 Correct 1 ms 512 KB Output is correct
15 Correct 1 ms 512 KB Output is correct
16 Correct 61 ms 6008 KB Output is correct
17 Correct 248 ms 22392 KB Output is correct
18 Correct 247 ms 22392 KB Output is correct
19 Correct 247 ms 22360 KB Output is correct
20 Correct 244 ms 22392 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 512 KB Output is correct
2 Correct 1 ms 512 KB Output is correct
3 Correct 1 ms 512 KB Output is correct
4 Correct 1 ms 512 KB Output is correct
5 Correct 1 ms 512 KB Output is correct
6 Correct 11 ms 1408 KB Output is correct
7 Correct 255 ms 22392 KB Output is correct
8 Correct 1 ms 512 KB Output is correct
9 Correct 1 ms 512 KB Output is correct
10 Correct 1 ms 512 KB Output is correct
11 Correct 1 ms 512 KB Output is correct
12 Correct 10 ms 1408 KB Output is correct
13 Correct 245 ms 22392 KB Output is correct
14 Correct 1 ms 512 KB Output is correct
15 Correct 1 ms 544 KB Output is correct
16 Correct 6 ms 1024 KB Output is correct
17 Correct 120 ms 12408 KB Output is correct
18 Correct 1 ms 640 KB Output is correct
19 Correct 1 ms 512 KB Output is correct
20 Correct 62 ms 6008 KB Output is correct
21 Correct 252 ms 22392 KB Output is correct
22 Correct 245 ms 22520 KB Output is correct
23 Correct 255 ms 22396 KB Output is correct
24 Correct 246 ms 22392 KB Output is correct
25 Correct 107 ms 12408 KB Output is correct
26 Correct 104 ms 12408 KB Output is correct
27 Correct 255 ms 22392 KB Output is correct
28 Correct 244 ms 22416 KB Output is correct
29 Correct 1 ms 512 KB Output is correct
30 Correct 1 ms 512 KB Output is correct
31 Correct 1 ms 512 KB Output is correct
32 Correct 1 ms 512 KB Output is correct
33 Correct 1 ms 512 KB Output is correct
34 Correct 1 ms 512 KB Output is correct
35 Correct 1 ms 512 KB Output is correct
36 Correct 10 ms 1408 KB Output is correct
37 Correct 242 ms 22396 KB Output is correct
38 Correct 1 ms 512 KB Output is correct
39 Correct 1 ms 512 KB Output is correct
40 Correct 11 ms 1408 KB Output is correct
41 Correct 261 ms 22392 KB Output is correct
42 Correct 1 ms 512 KB Output is correct
43 Correct 1 ms 512 KB Output is correct
44 Correct 6 ms 1024 KB Output is correct
45 Correct 125 ms 12408 KB Output is correct
46 Correct 1 ms 512 KB Output is correct
47 Correct 0 ms 512 KB Output is correct
48 Correct 1 ms 512 KB Output is correct
49 Correct 61 ms 6008 KB Output is correct
50 Correct 244 ms 22392 KB Output is correct
51 Correct 244 ms 22520 KB Output is correct
52 Correct 266 ms 22360 KB Output is correct
53 Correct 109 ms 12408 KB Output is correct
54 Correct 112 ms 12408 KB Output is correct
55 Correct 241 ms 22396 KB Output is correct
56 Correct 260 ms 22392 KB Output is correct
57 Correct 109 ms 12408 KB Output is correct
58 Correct 0 ms 512 KB Output is correct
59 Correct 1 ms 512 KB Output is correct
60 Correct 6 ms 1024 KB Output is correct
61 Correct 120 ms 12412 KB Output is correct
62 Correct 1 ms 512 KB Output is correct
63 Correct 1 ms 512 KB Output is correct
64 Correct 1 ms 512 KB Output is correct
65 Correct 62 ms 6008 KB Output is correct
66 Correct 106 ms 12408 KB Output is correct
67 Correct 106 ms 12372 KB Output is correct
68 Correct 103 ms 12408 KB Output is correct
69 Correct 108 ms 12408 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 512 KB Output is correct
2 Correct 1 ms 512 KB Output is correct
3 Correct 1 ms 512 KB Output is correct
4 Correct 1 ms 512 KB Output is correct
5 Correct 1 ms 512 KB Output is correct
6 Correct 11 ms 1408 KB Output is correct
7 Correct 255 ms 22392 KB Output is correct
8 Correct 1 ms 512 KB Output is correct
9 Correct 1 ms 512 KB Output is correct
10 Correct 1 ms 512 KB Output is correct
11 Correct 1 ms 512 KB Output is correct
12 Correct 10 ms 1408 KB Output is correct
13 Correct 245 ms 22392 KB Output is correct
14 Correct 1 ms 512 KB Output is correct
15 Correct 1 ms 544 KB Output is correct
16 Correct 6 ms 1024 KB Output is correct
17 Correct 120 ms 12408 KB Output is correct
18 Correct 1 ms 640 KB Output is correct
19 Correct 1 ms 512 KB Output is correct
20 Correct 62 ms 6008 KB Output is correct
21 Correct 252 ms 22392 KB Output is correct
22 Correct 245 ms 22520 KB Output is correct
23 Correct 255 ms 22396 KB Output is correct
24 Correct 246 ms 22392 KB Output is correct
25 Correct 107 ms 12408 KB Output is correct
26 Correct 104 ms 12408 KB Output is correct
27 Correct 255 ms 22392 KB Output is correct
28 Correct 244 ms 22416 KB Output is correct
29 Correct 1 ms 512 KB Output is correct
30 Correct 1 ms 512 KB Output is correct
31 Correct 1 ms 512 KB Output is correct
32 Correct 1 ms 512 KB Output is correct
33 Correct 1 ms 512 KB Output is correct
34 Correct 1 ms 512 KB Output is correct
35 Correct 1 ms 512 KB Output is correct
36 Correct 10 ms 1408 KB Output is correct
37 Correct 242 ms 22396 KB Output is correct
38 Correct 1 ms 512 KB Output is correct
39 Correct 1 ms 512 KB Output is correct
40 Correct 11 ms 1408 KB Output is correct
41 Correct 261 ms 22392 KB Output is correct
42 Correct 1 ms 512 KB Output is correct
43 Correct 1 ms 512 KB Output is correct
44 Correct 6 ms 1024 KB Output is correct
45 Correct 125 ms 12408 KB Output is correct
46 Correct 1 ms 512 KB Output is correct
47 Correct 0 ms 512 KB Output is correct
48 Correct 1 ms 512 KB Output is correct
49 Correct 61 ms 6008 KB Output is correct
50 Correct 244 ms 22392 KB Output is correct
51 Correct 244 ms 22520 KB Output is correct
52 Correct 266 ms 22360 KB Output is correct
53 Correct 109 ms 12408 KB Output is correct
54 Correct 112 ms 12408 KB Output is correct
55 Correct 241 ms 22396 KB Output is correct
56 Correct 260 ms 22392 KB Output is correct
57 Correct 109 ms 12408 KB Output is correct
58 Correct 1 ms 512 KB Output is correct
59 Correct 1 ms 512 KB Output is correct
60 Correct 1 ms 512 KB Output is correct
61 Correct 61 ms 6008 KB Output is correct
62 Correct 249 ms 22392 KB Output is correct
63 Correct 243 ms 22340 KB Output is correct
64 Correct 254 ms 22392 KB Output is correct
65 Correct 1 ms 512 KB Output is correct
66 Correct 61 ms 5996 KB Output is correct
67 Correct 258 ms 22392 KB Output is correct
68 Correct 244 ms 22520 KB Output is correct
69 Correct 258 ms 22392 KB Output is correct
70 Correct 1 ms 512 KB Output is correct
71 Correct 1 ms 512 KB Output is correct
72 Correct 1 ms 512 KB Output is correct
73 Correct 61 ms 6008 KB Output is correct
74 Correct 248 ms 22392 KB Output is correct
75 Correct 247 ms 22392 KB Output is correct
76 Correct 247 ms 22360 KB Output is correct
77 Correct 244 ms 22392 KB Output is correct
78 Correct 0 ms 512 KB Output is correct
79 Correct 1 ms 512 KB Output is correct
80 Correct 6 ms 1024 KB Output is correct
81 Correct 120 ms 12412 KB Output is correct
82 Correct 1 ms 512 KB Output is correct
83 Correct 1 ms 512 KB Output is correct
84 Correct 1 ms 512 KB Output is correct
85 Correct 62 ms 6008 KB Output is correct
86 Correct 106 ms 12408 KB Output is correct
87 Correct 106 ms 12372 KB Output is correct
88 Correct 103 ms 12408 KB Output is correct
89 Correct 108 ms 12408 KB Output is correct
90 Correct 1 ms 256 KB Output is correct
91 Correct 0 ms 256 KB Output is correct
92 Correct 5 ms 640 KB Output is correct
93 Correct 110 ms 8184 KB Output is correct
94 Correct 0 ms 256 KB Output is correct
95 Correct 0 ms 256 KB Output is correct
96 Correct 0 ms 256 KB Output is correct
97 Correct 25 ms 2296 KB Output is correct
98 Correct 104 ms 8156 KB Output is correct
99 Correct 100 ms 8184 KB Output is correct
100 Correct 103 ms 8184 KB Output is correct
101 Correct 98 ms 8184 KB Output is correct
102 Correct 110 ms 8184 KB Output is correct
103 Correct 111 ms 8184 KB Output is correct
104 Correct 114 ms 8184 KB Output is correct
105 Correct 108 ms 8184 KB Output is correct