oj.uz

Submission #798940

# Submission time Handle Problem Language Result Execution time Memory
798940 2023-07-31T07:47:15 Z QwertyPi Connecting Supertrees (IOI20_supertrees) C++14
100 / 100
 182 ms 24232 KB 
#include "supertrees.h"
#include <bits/stdc++.h>

using namespace std;

struct DSU{
	int dsu[1001];
	void init(int n){
		for(int i = 0; i < n; i++){
			dsu[i] = i;
		}
	}
	int f(int x){
		return x == dsu[x] ? x : dsu[x] = f(dsu[x]);
	}
	void g(int x, int y){
		x = f(x), y = f(y);
		dsu[x] = y;
	}
} dsu0, dsu1;
int construct(std::vector<std::vector<int>> p) {
	int n = p.size();
	dsu0.init(n), dsu1.init(n);
	for(int i = 0; i < n; i++){
		for(int j = 0; j < n; j++){
			if(p[i][j] == 3) return false;
		}
	}
	for(int i = 0; i < n; i++){
		for(int j = 0; j < n; j++){
			if(p[i][j] >= 1) dsu0.g(i, j);
			if(p[i][j] == 1) dsu1.g(i, j);
		}
	}
	std::vector<std::vector<int>> answer;
	for (int i = 0; i < n; i++) {
		std::vector<int> row;
		row.resize(n);
		answer.push_back(row);
	}
	for(int i = 0; i < n; i++){
		for(int j = 0; j < n; j++){
			if(p[i][j] == 0 && dsu0.f(i) == dsu0.f(j)){
				return false;
			}
			if(p[i][j] == 2 && dsu1.f(i) == dsu1.f(j)){
				return false;
			}
		}
	}
	map<int, vector<int>> p1, p2;
	for(int i = 0; i < n; i++){
		p1[dsu1.f(i)].push_back(i);
	}
	for(auto [i, v] : p1){
		for(int j = 1; j < v.size(); j++){
			answer[v[0]][v[j]] = answer[v[j]][v[0]] = 1;
		}
		p2[dsu0.f(v[0])].push_back(v[0]);
	}
	for(auto [i, v] : p2){
		if(v.size() == 1) continue;
		if(v.size() == 2) return false;
		for(int j = 1; j < v.size(); j++){
			answer[v[j - 1]][v[j]] = answer[v[j]][v[j - 1]] = 1;
		}
		answer[v[0]][v[v.size() - 1]] = answer[v[v.size() - 1]][v[0]] = 1;
	}
	build(answer);
	return true;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:55:11: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   55 |  for(auto [i, v] : p1){
      |           ^
supertrees.cpp:56:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   56 |   for(int j = 1; j < v.size(); j++){
      |                  ~~^~~~~~~~~~
supertrees.cpp:61:11: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   61 |  for(auto [i, v] : p2){
      |           ^
supertrees.cpp:64:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   64 |   for(int j = 1; j < v.size(); j++){
      |                  ~~^~~~~~~~~~

Subtask #1
11.0 / 11.0

# 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 Correct 1 ms 300 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 8 ms 1212 KB Output is correct
7 Correct 167 ms 23984 KB Output is correct

Subtask #2
10.0 / 10.0

# 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 Correct 1 ms 300 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 8 ms 1212 KB Output is correct
7 Correct 167 ms 23984 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 300 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 7 ms 1236 KB Output is correct
13 Correct 157 ms 24232 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 304 KB Output is correct
16 Correct 4 ms 852 KB Output is correct
17 Correct 81 ms 14072 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 40 ms 6260 KB Output is correct
21 Correct 159 ms 23988 KB Output is correct
22 Correct 158 ms 24056 KB Output is correct
23 Correct 160 ms 24012 KB Output is correct
24 Correct 161 ms 24188 KB Output is correct
25 Correct 71 ms 14084 KB Output is correct
26 Correct 70 ms 14084 KB Output is correct
27 Correct 160 ms 23924 KB Output is correct
28 Correct 158 ms 24192 KB Output is correct

Subtask #3
19.0 / 19.0

# 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 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 304 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 7 ms 1208 KB Output is correct
9 Correct 158 ms 24124 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 7 ms 1212 KB Output is correct
13 Correct 166 ms 24052 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 4 ms 852 KB Output is correct
17 Correct 92 ms 14068 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 39 ms 6256 KB Output is correct
22 Correct 172 ms 24052 KB Output is correct
23 Correct 157 ms 24112 KB Output is correct
24 Correct 162 ms 24052 KB Output is correct
25 Correct 72 ms 14212 KB Output is correct
26 Correct 87 ms 14088 KB Output is correct
27 Correct 161 ms 24120 KB Output is correct
28 Correct 171 ms 24112 KB Output is correct
29 Correct 73 ms 14212 KB Output is correct

Subtask #4
35.0 / 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 Correct 1 ms 212 KB Output is correct
4 Correct 40 ms 6244 KB Output is correct
5 Correct 176 ms 24016 KB Output is correct
6 Correct 182 ms 24056 KB Output is correct
7 Correct 161 ms 23960 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 45 ms 6308 KB Output is correct
10 Correct 161 ms 24124 KB Output is correct
11 Correct 158 ms 24148 KB Output is correct
12 Correct 167 ms 24160 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 40 ms 6220 KB Output is correct
17 Correct 171 ms 24056 KB Output is correct
18 Correct 168 ms 24060 KB Output is correct
19 Correct 162 ms 24072 KB Output is correct
20 Correct 162 ms 24180 KB Output is correct

Subtask #5
21.0 / 21.0

# 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 Correct 1 ms 300 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 8 ms 1212 KB Output is correct
7 Correct 167 ms 23984 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 300 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 7 ms 1236 KB Output is correct
13 Correct 157 ms 24232 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 304 KB Output is correct
16 Correct 4 ms 852 KB Output is correct
17 Correct 81 ms 14072 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 40 ms 6260 KB Output is correct
21 Correct 159 ms 23988 KB Output is correct
22 Correct 158 ms 24056 KB Output is correct
23 Correct 160 ms 24012 KB Output is correct
24 Correct 161 ms 24188 KB Output is correct
25 Correct 71 ms 14084 KB Output is correct
26 Correct 70 ms 14084 KB Output is correct
27 Correct 160 ms 23924 KB Output is correct
28 Correct 158 ms 24192 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 1 ms 212 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Correct 1 ms 304 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 1 ms 212 KB Output is correct
36 Correct 7 ms 1208 KB Output is correct
37 Correct 158 ms 24124 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 1 ms 212 KB Output is correct
40 Correct 7 ms 1212 KB Output is correct
41 Correct 166 ms 24052 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Correct 0 ms 212 KB Output is correct
44 Correct 4 ms 852 KB Output is correct
45 Correct 92 ms 14068 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 1 ms 212 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 39 ms 6256 KB Output is correct
50 Correct 172 ms 24052 KB Output is correct
51 Correct 157 ms 24112 KB Output is correct
52 Correct 162 ms 24052 KB Output is correct
53 Correct 72 ms 14212 KB Output is correct
54 Correct 87 ms 14088 KB Output is correct
55 Correct 161 ms 24120 KB Output is correct
56 Correct 171 ms 24112 KB Output is correct
57 Correct 73 ms 14212 KB Output is correct
58 Correct 1 ms 212 KB Output is correct
59 Correct 0 ms 212 KB Output is correct
60 Correct 4 ms 824 KB Output is correct
61 Correct 85 ms 13984 KB Output is correct
62 Correct 1 ms 300 KB Output is correct
63 Correct 1 ms 212 KB Output is correct
64 Correct 0 ms 212 KB Output is correct
65 Correct 48 ms 6292 KB Output is correct
66 Correct 74 ms 14072 KB Output is correct
67 Correct 69 ms 14084 KB Output is correct
68 Correct 77 ms 14064 KB Output is correct
69 Correct 87 ms 14216 KB Output is correct

Subtask #6
4.0 / 4.0

# 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 Correct 1 ms 300 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 8 ms 1212 KB Output is correct
7 Correct 167 ms 23984 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 300 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 7 ms 1236 KB Output is correct
13 Correct 157 ms 24232 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 304 KB Output is correct
16 Correct 4 ms 852 KB Output is correct
17 Correct 81 ms 14072 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 40 ms 6260 KB Output is correct
21 Correct 159 ms 23988 KB Output is correct
22 Correct 158 ms 24056 KB Output is correct
23 Correct 160 ms 24012 KB Output is correct
24 Correct 161 ms 24188 KB Output is correct
25 Correct 71 ms 14084 KB Output is correct
26 Correct 70 ms 14084 KB Output is correct
27 Correct 160 ms 23924 KB Output is correct
28 Correct 158 ms 24192 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 1 ms 212 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Correct 1 ms 304 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 1 ms 212 KB Output is correct
36 Correct 7 ms 1208 KB Output is correct
37 Correct 158 ms 24124 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 1 ms 212 KB Output is correct
40 Correct 7 ms 1212 KB Output is correct
41 Correct 166 ms 24052 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Correct 0 ms 212 KB Output is correct
44 Correct 4 ms 852 KB Output is correct
45 Correct 92 ms 14068 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 1 ms 212 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 39 ms 6256 KB Output is correct
50 Correct 172 ms 24052 KB Output is correct
51 Correct 157 ms 24112 KB Output is correct
52 Correct 162 ms 24052 KB Output is correct
53 Correct 72 ms 14212 KB Output is correct
54 Correct 87 ms 14088 KB Output is correct
55 Correct 161 ms 24120 KB Output is correct
56 Correct 171 ms 24112 KB Output is correct
57 Correct 73 ms 14212 KB Output is correct
58 Correct 1 ms 212 KB Output is correct
59 Correct 1 ms 212 KB Output is correct
60 Correct 1 ms 212 KB Output is correct
61 Correct 40 ms 6244 KB Output is correct
62 Correct 176 ms 24016 KB Output is correct
63 Correct 182 ms 24056 KB Output is correct
64 Correct 161 ms 23960 KB Output is correct
65 Correct 1 ms 212 KB Output is correct
66 Correct 45 ms 6308 KB Output is correct
67 Correct 161 ms 24124 KB Output is correct
68 Correct 158 ms 24148 KB Output is correct
69 Correct 167 ms 24160 KB Output is correct
70 Correct 1 ms 212 KB Output is correct
71 Correct 1 ms 212 KB Output is correct
72 Correct 1 ms 212 KB Output is correct
73 Correct 40 ms 6220 KB Output is correct
74 Correct 171 ms 24056 KB Output is correct
75 Correct 168 ms 24060 KB Output is correct
76 Correct 162 ms 24072 KB Output is correct
77 Correct 162 ms 24180 KB Output is correct
78 Correct 1 ms 212 KB Output is correct
79 Correct 0 ms 212 KB Output is correct
80 Correct 4 ms 824 KB Output is correct
81 Correct 85 ms 13984 KB Output is correct
82 Correct 1 ms 300 KB Output is correct
83 Correct 1 ms 212 KB Output is correct
84 Correct 0 ms 212 KB Output is correct
85 Correct 48 ms 6292 KB Output is correct
86 Correct 74 ms 14072 KB Output is correct
87 Correct 69 ms 14084 KB Output is correct
88 Correct 77 ms 14064 KB Output is correct
89 Correct 87 ms 14216 KB Output is correct
90 Correct 1 ms 212 KB Output is correct
91 Correct 0 ms 212 KB Output is correct
92 Correct 3 ms 696 KB Output is correct
93 Correct 67 ms 10104 KB Output is correct
94 Correct 0 ms 212 KB Output is correct
95 Correct 1 ms 212 KB Output is correct
96 Correct 1 ms 212 KB Output is correct
97 Correct 16 ms 2772 KB Output is correct
98 Correct 66 ms 10100 KB Output is correct
99 Correct 83 ms 10100 KB Output is correct
100 Correct 67 ms 10064 KB Output is correct
101 Correct 67 ms 10104 KB Output is correct
102 Correct 71 ms 10104 KB Output is correct
103 Correct 81 ms 10112 KB Output is correct
104 Correct 66 ms 10120 KB Output is correct
105 Correct 69 ms 10104 KB Output is correct