oj.uz

Submission #1020505

# Submission time Handle Problem Language Result Execution time Memory
1020505 2024-07-12T06:12:19 Z HappyCapybara Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 231 ms 24420 KB 
#include "supertrees.h"
#include<bits/stdc++.h>
using namespace std;

vector<int> par;

int parent(int a){
	if (par[a] == a) return par[a];
	else return par[a] = parent(par[a]);
}

void merge(int a, int b){
	a = parent(a);
	b = parent(b);
	if (a == b) return;
	par[b] = a;
}

int construct(vector<vector<int>> p){
	int n = p.size();
	par.resize(n);
	for (int i=0; i<n; i++) par[i] = i;
	vector<vector<int>> answer(n, vector<int>(n, 0));
	for (int i=0; i<n; i++) {
		for (int j=0; j<n; j++){
			if (i == j) continue;
			if (p[i][j] == 0) continue;
			if (p[i][j] == 3) return 0;
			merge(i, j);
		}
	}
	for (int i=0; i<n; i++){
		for (int j=0; j<n; j++){
			if (p[i][j] == 0 && parent(i) == parent(j)) return 0;
		}
	}
	unordered_map<int,vector<int>> m;
	for (int i=0; i<n; i++) m[parent(i)].push_back(i);
	for (int i=0; i<n; i++) par[i] = i;
	for (int i=0; i<n; i++){
		if (m[i].size() == 0) continue;
		for (int x : m[i]){
			for (int y : m[i]){
				if (p[x][y] == 1) merge(x, y);
			}
		}
		for (int x : m[i]){
			for (int y : m[i]){
				if (p[x][y] == 2 && parent(x) == parent(y)) return 0;
			}
		}
		unordered_set<int> seen;
		vector<int> ofs;
		for (int x : m[i]){
			if (seen.find(parent(x)) == seen.end()){
				seen.insert(parent(x));
				ofs.push_back(parent(x));
			}
			if (parent(x) != x){
				answer[x][parent(x)] = 1;
				answer[parent(x)][x] = 1;
			}
		}
		if (ofs.size() == 1) continue;
		if (ofs.size() == 2) return 0;
		for (int j=0; j<ofs.size(); j++){
			answer[ofs[j]][ofs[(j+1)%ofs.size()]] = 1;
			answer[ofs[(j+1)%ofs.size()]][ofs[j]] = 1;
		}
	}
	build(answer);
	return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:66:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   66 |   for (int j=0; j<ofs.size(); j++){
      |                 ~^~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 600 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 6 ms 1372 KB Output is correct
7 Correct 139 ms 24196 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 600 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 6 ms 1372 KB Output is correct
7 Correct 139 ms 24196 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 436 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 7 ms 1372 KB Output is correct
13 Correct 129 ms 24148 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 77 ms 14084 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 32 ms 6224 KB Output is correct
21 Correct 158 ms 24148 KB Output is correct
22 Correct 162 ms 24184 KB Output is correct
23 Correct 132 ms 24144 KB Output is correct
24 Correct 126 ms 24144 KB Output is correct
25 Correct 56 ms 14164 KB Output is correct
26 Correct 53 ms 14164 KB Output is correct
27 Correct 142 ms 24144 KB Output is correct
28 Correct 231 ms 24144 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 432 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 6 ms 1376 KB Output is correct
9 Correct 128 ms 24148 KB Output is correct
10 Correct 1 ms 436 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 6 ms 1380 KB Output is correct
13 Correct 148 ms 24052 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 832 KB Output is correct
17 Correct 67 ms 14200 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 31 ms 6228 KB Output is correct
22 Correct 160 ms 24196 KB Output is correct
23 Correct 125 ms 24148 KB Output is correct
24 Correct 162 ms 24420 KB Output is correct
25 Correct 54 ms 14164 KB Output is correct
26 Correct 63 ms 14160 KB Output is correct
27 Correct 123 ms 24144 KB Output is correct
28 Correct 136 ms 24184 KB Output is correct
29 Correct 54 ms 14088 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 31 ms 6236 KB Output is correct
5 Correct 122 ms 24180 KB Output is correct
6 Correct 119 ms 24148 KB Output is correct
7 Correct 130 ms 24144 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 30 ms 6236 KB Output is correct
10 Correct 134 ms 24188 KB Output is correct
11 Correct 121 ms 24144 KB Output is correct
12 Correct 129 ms 24144 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 412 KB Output is correct
16 Correct 30 ms 6340 KB Output is correct
17 Correct 139 ms 24144 KB Output is correct
18 Correct 123 ms 24180 KB Output is correct
19 Correct 121 ms 24056 KB Output is correct
20 Correct 127 ms 24148 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 600 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 6 ms 1372 KB Output is correct
7 Correct 139 ms 24196 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 436 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 7 ms 1372 KB Output is correct
13 Correct 129 ms 24148 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 77 ms 14084 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 32 ms 6224 KB Output is correct
21 Correct 158 ms 24148 KB Output is correct
22 Correct 162 ms 24184 KB Output is correct
23 Correct 132 ms 24144 KB Output is correct
24 Correct 126 ms 24144 KB Output is correct
25 Correct 56 ms 14164 KB Output is correct
26 Correct 53 ms 14164 KB Output is correct
27 Correct 142 ms 24144 KB Output is correct
28 Correct 231 ms 24144 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 432 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 344 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 6 ms 1376 KB Output is correct
37 Correct 128 ms 24148 KB Output is correct
38 Correct 1 ms 436 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 6 ms 1380 KB Output is correct
41 Correct 148 ms 24052 KB Output is correct
42 Correct 1 ms 348 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 3 ms 832 KB Output is correct
45 Correct 67 ms 14200 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 1 ms 348 KB Output is correct
49 Correct 31 ms 6228 KB Output is correct
50 Correct 160 ms 24196 KB Output is correct
51 Correct 125 ms 24148 KB Output is correct
52 Correct 162 ms 24420 KB Output is correct
53 Correct 54 ms 14164 KB Output is correct
54 Correct 63 ms 14160 KB Output is correct
55 Correct 123 ms 24144 KB Output is correct
56 Correct 136 ms 24184 KB Output is correct
57 Correct 54 ms 14088 KB Output is correct
58 Correct 0 ms 344 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 5 ms 940 KB Output is correct
61 Correct 64 ms 14212 KB Output is correct
62 Correct 1 ms 428 KB Output is correct
63 Correct 0 ms 344 KB Output is correct
64 Correct 0 ms 344 KB Output is correct
65 Correct 31 ms 6204 KB Output is correct
66 Correct 56 ms 14216 KB Output is correct
67 Correct 55 ms 14160 KB Output is correct
68 Correct 71 ms 14160 KB Output is correct
69 Correct 68 ms 14076 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 600 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 6 ms 1372 KB Output is correct
7 Correct 139 ms 24196 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 436 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 7 ms 1372 KB Output is correct
13 Correct 129 ms 24148 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 77 ms 14084 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 32 ms 6224 KB Output is correct
21 Correct 158 ms 24148 KB Output is correct
22 Correct 162 ms 24184 KB Output is correct
23 Correct 132 ms 24144 KB Output is correct
24 Correct 126 ms 24144 KB Output is correct
25 Correct 56 ms 14164 KB Output is correct
26 Correct 53 ms 14164 KB Output is correct
27 Correct 142 ms 24144 KB Output is correct
28 Correct 231 ms 24144 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 432 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 344 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 6 ms 1376 KB Output is correct
37 Correct 128 ms 24148 KB Output is correct
38 Correct 1 ms 436 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 6 ms 1380 KB Output is correct
41 Correct 148 ms 24052 KB Output is correct
42 Correct 1 ms 348 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 3 ms 832 KB Output is correct
45 Correct 67 ms 14200 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 1 ms 348 KB Output is correct
49 Correct 31 ms 6228 KB Output is correct
50 Correct 160 ms 24196 KB Output is correct
51 Correct 125 ms 24148 KB Output is correct
52 Correct 162 ms 24420 KB Output is correct
53 Correct 54 ms 14164 KB Output is correct
54 Correct 63 ms 14160 KB Output is correct
55 Correct 123 ms 24144 KB Output is correct
56 Correct 136 ms 24184 KB Output is correct
57 Correct 54 ms 14088 KB Output is correct
58 Correct 1 ms 344 KB Output is correct
59 Correct 0 ms 344 KB Output is correct
60 Correct 1 ms 348 KB Output is correct
61 Correct 31 ms 6236 KB Output is correct
62 Correct 122 ms 24180 KB Output is correct
63 Correct 119 ms 24148 KB Output is correct
64 Correct 130 ms 24144 KB Output is correct
65 Correct 1 ms 344 KB Output is correct
66 Correct 30 ms 6236 KB Output is correct
67 Correct 134 ms 24188 KB Output is correct
68 Correct 121 ms 24144 KB Output is correct
69 Correct 129 ms 24144 KB Output is correct
70 Correct 0 ms 348 KB Output is correct
71 Correct 0 ms 348 KB Output is correct
72 Correct 1 ms 412 KB Output is correct
73 Correct 30 ms 6340 KB Output is correct
74 Correct 139 ms 24144 KB Output is correct
75 Correct 123 ms 24180 KB Output is correct
76 Correct 121 ms 24056 KB Output is correct
77 Correct 127 ms 24148 KB Output is correct
78 Correct 0 ms 344 KB Output is correct
79 Correct 0 ms 348 KB Output is correct
80 Correct 5 ms 940 KB Output is correct
81 Correct 64 ms 14212 KB Output is correct
82 Correct 1 ms 428 KB Output is correct
83 Correct 0 ms 344 KB Output is correct
84 Correct 0 ms 344 KB Output is correct
85 Correct 31 ms 6204 KB Output is correct
86 Correct 56 ms 14216 KB Output is correct
87 Correct 55 ms 14160 KB Output is correct
88 Correct 71 ms 14160 KB Output is correct
89 Correct 68 ms 14076 KB Output is correct
90 Correct 0 ms 344 KB Output is correct
91 Correct 1 ms 344 KB Output is correct
92 Correct 4 ms 804 KB Output is correct
93 Correct 56 ms 14164 KB Output is correct
94 Correct 0 ms 348 KB Output is correct
95 Correct 0 ms 344 KB Output is correct
96 Correct 1 ms 344 KB Output is correct
97 Correct 17 ms 3676 KB Output is correct
98 Correct 66 ms 14204 KB Output is correct
99 Correct 55 ms 14160 KB Output is correct
100 Correct 57 ms 14088 KB Output is correct
101 Correct 56 ms 14200 KB Output is correct
102 Correct 52 ms 14084 KB Output is correct
103 Correct 60 ms 14168 KB Output is correct
104 Correct 62 ms 14072 KB Output is correct
105 Correct 60 ms 14216 KB Output is correct