oj.uz

Submission #731961

# Submission time Handle Problem Language Result Execution time Memory
731961 2023-04-28T07:45:40 Z TheSahib Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 210 ms 24092 KB 
#include "supertrees.h"
#include <bits/stdc++.h>

using namespace std;

const int MAX = 1005;
int par[MAX];

int find_set(int v){
    if(par[v] < 0) return v;
    return par[v] = find_set(par[v]);
}

bool unite(int u, int v){
    u = find_set(u);
    v = find_set(v);
    if(u == v) return false;

    par[u] += par[v];
    par[v] = u;
    return true;
}

vector<int> g[MAX];
bool visited[MAX];
void dfs(int node, vector<int>& v){
    v[node] += 1;
    visited[node] = 1;
    for(int& to:g[node]){
        if(!visited[to]){
            dfs(to, v);
        }
    }
    visited[node] = 0;
}

int construct(vector<vector<int>> p) {
	int n = p.size();
    vector<vector<int>> ans(n, vector<int>(n));

    vector<bool> except(n, 0);
    for (int i = 0; i < n; i++)
    {
        for (int j = i + 1; j < n; j++)
        {
            if(p[i][j] == 1){
                except[i] = 1;
                ans[i][j] = 1;
                ans[j][i] = 1;
                break;
            }
        }
    }
    
    memset(par, -1, sizeof(par));
	for (int i = 0; i < n; i++)
    {
        if(except[i]) continue;
        for (int j = 0; j < n; j++)
        {
            if(except[j]) continue;
            if(p[i][j] == 2){
                unite(i, j);
            }
        }
    }
    vector<int> comps[MAX];
    for (int i = 0; i < n; i++)
    {
        if(except[i]) continue;
        comps[find_set(i)].push_back(i);
    }
    for(auto& v:comps){
        for (int i = 0; i < v.size(); i++)
        {
            if(i != 0){
                ans[v[i]][v[i - 1]] = 1;
            }
            if(i != v.size() - 1){
                ans[v[i]][v[i + 1]] = 1;
            }
        }
        if(v.size() > 2){
            ans[v.front()][v.back()] = 1;
            ans[v.back()][v.front()] = 1;
        }
    }
    for (int i = 0; i < n; i++)
    {
        for (int j = 0; j < n; j++)
        {
            if(ans[i][j]){
                g[i].push_back(j);
            }
        }
    }
    
    for (int i = 0; i < n; i++)
    {
        vector<int> v(n, 0);
        dfs(i, v);
        if(v != p[i]) return 0;
    }
    
    
    build(ans);
	return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:74:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   74 |         for (int i = 0; i < v.size(); i++)
      |                         ~~^~~~~~~~~~
supertrees.cpp:79:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   79 |             if(i != v.size() - 1){
      |                ~~^~~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 328 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 328 KB Output is correct
5 Correct 1 ms 328 KB Output is correct
6 Correct 10 ms 1236 KB Output is correct
7 Correct 185 ms 22484 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 328 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 328 KB Output is correct
5 Correct 1 ms 328 KB Output is correct
6 Correct 10 ms 1236 KB Output is correct
7 Correct 185 ms 22484 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 8 ms 1236 KB Output is correct
13 Correct 192 ms 22436 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 6 ms 820 KB Output is correct
17 Correct 82 ms 14112 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 49 ms 6224 KB Output is correct
21 Correct 179 ms 24080 KB Output is correct
22 Correct 175 ms 23968 KB Output is correct
23 Correct 210 ms 24092 KB Output is correct
24 Correct 181 ms 24012 KB Output is correct
25 Correct 72 ms 14156 KB Output is correct
26 Correct 73 ms 14096 KB Output is correct
27 Correct 186 ms 24008 KB Output is correct
28 Correct 172 ms 24012 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 328 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 7 ms 1236 KB Output is correct
9 Correct 178 ms 24068 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 324 KB Output is correct
12 Correct 8 ms 1236 KB Output is correct
13 Correct 184 ms 24092 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 5 ms 852 KB Output is correct
17 Correct 83 ms 14224 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 43 ms 6224 KB Output is correct
22 Correct 174 ms 24076 KB Output is correct
23 Correct 175 ms 24092 KB Output is correct
24 Correct 205 ms 24092 KB Output is correct
25 Correct 74 ms 14100 KB Output is correct
26 Correct 74 ms 14156 KB Output is correct
27 Correct 174 ms 24076 KB Output is correct
28 Correct 190 ms 24016 KB Output is correct
29 Correct 70 ms 14156 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 328 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 44 ms 5932 KB Output is correct
5 Correct 182 ms 22428 KB Output is correct
6 Correct 175 ms 22344 KB Output is correct
7 Correct 186 ms 22352 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 47 ms 5880 KB Output is correct
10 Correct 180 ms 22392 KB Output is correct
11 Correct 174 ms 22356 KB Output is correct
12 Correct 192 ms 22348 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 328 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 50 ms 5892 KB Output is correct
17 Correct 175 ms 22400 KB Output is correct
18 Correct 173 ms 22316 KB Output is correct
19 Correct 175 ms 22348 KB Output is correct
20 Correct 171 ms 22348 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 328 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 328 KB Output is correct
5 Correct 1 ms 328 KB Output is correct
6 Correct 10 ms 1236 KB Output is correct
7 Correct 185 ms 22484 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 8 ms 1236 KB Output is correct
13 Correct 192 ms 22436 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 6 ms 820 KB Output is correct
17 Correct 82 ms 14112 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 49 ms 6224 KB Output is correct
21 Correct 179 ms 24080 KB Output is correct
22 Correct 175 ms 23968 KB Output is correct
23 Correct 210 ms 24092 KB Output is correct
24 Correct 181 ms 24012 KB Output is correct
25 Correct 72 ms 14156 KB Output is correct
26 Correct 73 ms 14096 KB Output is correct
27 Correct 186 ms 24008 KB Output is correct
28 Correct 172 ms 24012 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 0 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 0 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 328 KB Output is correct
35 Correct 0 ms 340 KB Output is correct
36 Correct 7 ms 1236 KB Output is correct
37 Correct 178 ms 24068 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 324 KB Output is correct
40 Correct 8 ms 1236 KB Output is correct
41 Correct 184 ms 24092 KB Output is correct
42 Correct 0 ms 340 KB Output is correct
43 Correct 1 ms 340 KB Output is correct
44 Correct 5 ms 852 KB Output is correct
45 Correct 83 ms 14224 KB Output is correct
46 Correct 1 ms 340 KB Output is correct
47 Correct 1 ms 340 KB Output is correct
48 Correct 1 ms 340 KB Output is correct
49 Correct 43 ms 6224 KB Output is correct
50 Correct 174 ms 24076 KB Output is correct
51 Correct 175 ms 24092 KB Output is correct
52 Correct 205 ms 24092 KB Output is correct
53 Correct 74 ms 14100 KB Output is correct
54 Correct 74 ms 14156 KB Output is correct
55 Correct 174 ms 24076 KB Output is correct
56 Correct 190 ms 24016 KB Output is correct
57 Correct 70 ms 14156 KB Output is correct
58 Correct 1 ms 340 KB Output is correct
59 Correct 1 ms 328 KB Output is correct
60 Correct 4 ms 852 KB Output is correct
61 Correct 78 ms 14152 KB Output is correct
62 Correct 1 ms 340 KB Output is correct
63 Correct 1 ms 340 KB Output is correct
64 Correct 1 ms 340 KB Output is correct
65 Correct 45 ms 6276 KB Output is correct
66 Correct 71 ms 14092 KB Output is correct
67 Correct 74 ms 14100 KB Output is correct
68 Correct 77 ms 14156 KB Output is correct
69 Correct 72 ms 14096 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 328 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 328 KB Output is correct
5 Correct 1 ms 328 KB Output is correct
6 Correct 10 ms 1236 KB Output is correct
7 Correct 185 ms 22484 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 8 ms 1236 KB Output is correct
13 Correct 192 ms 22436 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 6 ms 820 KB Output is correct
17 Correct 82 ms 14112 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 49 ms 6224 KB Output is correct
21 Correct 179 ms 24080 KB Output is correct
22 Correct 175 ms 23968 KB Output is correct
23 Correct 210 ms 24092 KB Output is correct
24 Correct 181 ms 24012 KB Output is correct
25 Correct 72 ms 14156 KB Output is correct
26 Correct 73 ms 14096 KB Output is correct
27 Correct 186 ms 24008 KB Output is correct
28 Correct 172 ms 24012 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 0 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 0 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 328 KB Output is correct
35 Correct 0 ms 340 KB Output is correct
36 Correct 7 ms 1236 KB Output is correct
37 Correct 178 ms 24068 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 324 KB Output is correct
40 Correct 8 ms 1236 KB Output is correct
41 Correct 184 ms 24092 KB Output is correct
42 Correct 0 ms 340 KB Output is correct
43 Correct 1 ms 340 KB Output is correct
44 Correct 5 ms 852 KB Output is correct
45 Correct 83 ms 14224 KB Output is correct
46 Correct 1 ms 340 KB Output is correct
47 Correct 1 ms 340 KB Output is correct
48 Correct 1 ms 340 KB Output is correct
49 Correct 43 ms 6224 KB Output is correct
50 Correct 174 ms 24076 KB Output is correct
51 Correct 175 ms 24092 KB Output is correct
52 Correct 205 ms 24092 KB Output is correct
53 Correct 74 ms 14100 KB Output is correct
54 Correct 74 ms 14156 KB Output is correct
55 Correct 174 ms 24076 KB Output is correct
56 Correct 190 ms 24016 KB Output is correct
57 Correct 70 ms 14156 KB Output is correct
58 Correct 1 ms 328 KB Output is correct
59 Correct 1 ms 332 KB Output is correct
60 Correct 1 ms 340 KB Output is correct
61 Correct 44 ms 5932 KB Output is correct
62 Correct 182 ms 22428 KB Output is correct
63 Correct 175 ms 22344 KB Output is correct
64 Correct 186 ms 22352 KB Output is correct
65 Correct 1 ms 340 KB Output is correct
66 Correct 47 ms 5880 KB Output is correct
67 Correct 180 ms 22392 KB Output is correct
68 Correct 174 ms 22356 KB Output is correct
69 Correct 192 ms 22348 KB Output is correct
70 Correct 1 ms 340 KB Output is correct
71 Correct 1 ms 328 KB Output is correct
72 Correct 1 ms 340 KB Output is correct
73 Correct 50 ms 5892 KB Output is correct
74 Correct 175 ms 22400 KB Output is correct
75 Correct 173 ms 22316 KB Output is correct
76 Correct 175 ms 22348 KB Output is correct
77 Correct 171 ms 22348 KB Output is correct
78 Correct 1 ms 340 KB Output is correct
79 Correct 1 ms 328 KB Output is correct
80 Correct 4 ms 852 KB Output is correct
81 Correct 78 ms 14152 KB Output is correct
82 Correct 1 ms 340 KB Output is correct
83 Correct 1 ms 340 KB Output is correct
84 Correct 1 ms 340 KB Output is correct
85 Correct 45 ms 6276 KB Output is correct
86 Correct 71 ms 14092 KB Output is correct
87 Correct 74 ms 14100 KB Output is correct
88 Correct 77 ms 14156 KB Output is correct
89 Correct 72 ms 14096 KB Output is correct
90 Correct 1 ms 340 KB Output is correct
91 Correct 1 ms 340 KB Output is correct
92 Correct 4 ms 852 KB Output is correct
93 Correct 72 ms 14096 KB Output is correct
94 Correct 1 ms 340 KB Output is correct
95 Correct 1 ms 340 KB Output is correct
96 Correct 1 ms 328 KB Output is correct
97 Correct 20 ms 3832 KB Output is correct
98 Correct 74 ms 14108 KB Output is correct
99 Correct 73 ms 14232 KB Output is correct
100 Correct 83 ms 14092 KB Output is correct
101 Correct 71 ms 14164 KB Output is correct
102 Correct 78 ms 14096 KB Output is correct
103 Correct 85 ms 14156 KB Output is correct
104 Correct 72 ms 14092 KB Output is correct
105 Correct 79 ms 14160 KB Output is correct