oj.uz

Submission #731997

# Submission time Handle Problem Language Result Execution time Memory
731997 2023-04-28T08:19:21 Z vjudge1 Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 203 ms 24148 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 340 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 11 ms 1292 KB Output is correct
7 Correct 195 ms 24076 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 340 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 11 ms 1292 KB Output is correct
7 Correct 195 ms 24076 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 324 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 8 ms 1236 KB Output is correct
13 Correct 181 ms 24004 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 4 ms 852 KB Output is correct
17 Correct 76 ms 14108 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 42 ms 6240 KB Output is correct
21 Correct 173 ms 24012 KB Output is correct
22 Correct 176 ms 24036 KB Output is correct
23 Correct 194 ms 24148 KB Output is correct
24 Correct 173 ms 24112 KB Output is correct
25 Correct 81 ms 14108 KB Output is correct
26 Correct 72 ms 14096 KB Output is correct
27 Correct 189 ms 24056 KB Output is correct
28 Correct 185 ms 24076 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 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 324 KB Output is correct
7 Correct 1 ms 328 KB Output is correct
8 Correct 8 ms 1236 KB Output is correct
9 Correct 170 ms 24120 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 324 KB Output is correct
12 Correct 9 ms 1332 KB Output is correct
13 Correct 193 ms 24088 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 4 ms 852 KB Output is correct
17 Correct 82 ms 14284 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 46 ms 6288 KB Output is correct
22 Correct 173 ms 24068 KB Output is correct
23 Correct 183 ms 24020 KB Output is correct
24 Correct 189 ms 24012 KB Output is correct
25 Correct 93 ms 14156 KB Output is correct
26 Correct 84 ms 14092 KB Output is correct
27 Correct 181 ms 24020 KB Output is correct
28 Correct 200 ms 24012 KB Output is correct
29 Correct 77 ms 14104 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 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 44 ms 6240 KB Output is correct
5 Correct 168 ms 23968 KB Output is correct
6 Correct 191 ms 24080 KB Output is correct
7 Correct 195 ms 24012 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 49 ms 6276 KB Output is correct
10 Correct 177 ms 24064 KB Output is correct
11 Correct 181 ms 23968 KB Output is correct
12 Correct 203 ms 24096 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 43 ms 6248 KB Output is correct
17 Correct 179 ms 24028 KB Output is correct
18 Correct 202 ms 24016 KB Output is correct
19 Correct 177 ms 24012 KB Output is correct
20 Correct 179 ms 24092 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 340 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 11 ms 1292 KB Output is correct
7 Correct 195 ms 24076 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 324 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 8 ms 1236 KB Output is correct
13 Correct 181 ms 24004 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 4 ms 852 KB Output is correct
17 Correct 76 ms 14108 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 42 ms 6240 KB Output is correct
21 Correct 173 ms 24012 KB Output is correct
22 Correct 176 ms 24036 KB Output is correct
23 Correct 194 ms 24148 KB Output is correct
24 Correct 173 ms 24112 KB Output is correct
25 Correct 81 ms 14108 KB Output is correct
26 Correct 72 ms 14096 KB Output is correct
27 Correct 189 ms 24056 KB Output is correct
28 Correct 185 ms 24076 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 324 KB Output is correct
35 Correct 1 ms 328 KB Output is correct
36 Correct 8 ms 1236 KB Output is correct
37 Correct 170 ms 24120 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 324 KB Output is correct
40 Correct 9 ms 1332 KB Output is correct
41 Correct 193 ms 24088 KB Output is correct
42 Correct 1 ms 340 KB Output is correct
43 Correct 1 ms 340 KB Output is correct
44 Correct 4 ms 852 KB Output is correct
45 Correct 82 ms 14284 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 46 ms 6288 KB Output is correct
50 Correct 173 ms 24068 KB Output is correct
51 Correct 183 ms 24020 KB Output is correct
52 Correct 189 ms 24012 KB Output is correct
53 Correct 93 ms 14156 KB Output is correct
54 Correct 84 ms 14092 KB Output is correct
55 Correct 181 ms 24020 KB Output is correct
56 Correct 200 ms 24012 KB Output is correct
57 Correct 77 ms 14104 KB Output is correct
58 Correct 1 ms 340 KB Output is correct
59 Correct 1 ms 340 KB Output is correct
60 Correct 4 ms 852 KB Output is correct
61 Correct 80 ms 14112 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 44 ms 6220 KB Output is correct
66 Correct 98 ms 14096 KB Output is correct
67 Correct 92 ms 14156 KB Output is correct
68 Correct 81 ms 14140 KB Output is correct
69 Correct 71 ms 14064 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 340 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 11 ms 1292 KB Output is correct
7 Correct 195 ms 24076 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 324 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 8 ms 1236 KB Output is correct
13 Correct 181 ms 24004 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 4 ms 852 KB Output is correct
17 Correct 76 ms 14108 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 42 ms 6240 KB Output is correct
21 Correct 173 ms 24012 KB Output is correct
22 Correct 176 ms 24036 KB Output is correct
23 Correct 194 ms 24148 KB Output is correct
24 Correct 173 ms 24112 KB Output is correct
25 Correct 81 ms 14108 KB Output is correct
26 Correct 72 ms 14096 KB Output is correct
27 Correct 189 ms 24056 KB Output is correct
28 Correct 185 ms 24076 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 324 KB Output is correct
35 Correct 1 ms 328 KB Output is correct
36 Correct 8 ms 1236 KB Output is correct
37 Correct 170 ms 24120 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 324 KB Output is correct
40 Correct 9 ms 1332 KB Output is correct
41 Correct 193 ms 24088 KB Output is correct
42 Correct 1 ms 340 KB Output is correct
43 Correct 1 ms 340 KB Output is correct
44 Correct 4 ms 852 KB Output is correct
45 Correct 82 ms 14284 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 46 ms 6288 KB Output is correct
50 Correct 173 ms 24068 KB Output is correct
51 Correct 183 ms 24020 KB Output is correct
52 Correct 189 ms 24012 KB Output is correct
53 Correct 93 ms 14156 KB Output is correct
54 Correct 84 ms 14092 KB Output is correct
55 Correct 181 ms 24020 KB Output is correct
56 Correct 200 ms 24012 KB Output is correct
57 Correct 77 ms 14104 KB Output is correct
58 Correct 1 ms 328 KB Output is correct
59 Correct 0 ms 340 KB Output is correct
60 Correct 1 ms 340 KB Output is correct
61 Correct 44 ms 6240 KB Output is correct
62 Correct 168 ms 23968 KB Output is correct
63 Correct 191 ms 24080 KB Output is correct
64 Correct 195 ms 24012 KB Output is correct
65 Correct 1 ms 340 KB Output is correct
66 Correct 49 ms 6276 KB Output is correct
67 Correct 177 ms 24064 KB Output is correct
68 Correct 181 ms 23968 KB Output is correct
69 Correct 203 ms 24096 KB Output is correct
70 Correct 1 ms 340 KB Output is correct
71 Correct 1 ms 340 KB Output is correct
72 Correct 1 ms 340 KB Output is correct
73 Correct 43 ms 6248 KB Output is correct
74 Correct 179 ms 24028 KB Output is correct
75 Correct 202 ms 24016 KB Output is correct
76 Correct 177 ms 24012 KB Output is correct
77 Correct 179 ms 24092 KB Output is correct
78 Correct 1 ms 340 KB Output is correct
79 Correct 1 ms 340 KB Output is correct
80 Correct 4 ms 852 KB Output is correct
81 Correct 80 ms 14112 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 44 ms 6220 KB Output is correct
86 Correct 98 ms 14096 KB Output is correct
87 Correct 92 ms 14156 KB Output is correct
88 Correct 81 ms 14140 KB Output is correct
89 Correct 71 ms 14064 KB Output is correct
90 Correct 1 ms 324 KB Output is correct
91 Correct 1 ms 340 KB Output is correct
92 Correct 4 ms 852 KB Output is correct
93 Correct 76 ms 14144 KB Output is correct
94 Correct 1 ms 324 KB Output is correct
95 Correct 1 ms 340 KB Output is correct
96 Correct 1 ms 328 KB Output is correct
97 Correct 18 ms 3736 KB Output is correct
98 Correct 76 ms 14104 KB Output is correct
99 Correct 82 ms 14272 KB Output is correct
100 Correct 85 ms 14100 KB Output is correct
101 Correct 103 ms 14096 KB Output is correct
102 Correct 76 ms 14096 KB Output is correct
103 Correct 87 ms 14220 KB Output is correct
104 Correct 98 ms 14104 KB Output is correct
105 Correct 116 ms 14156 KB Output is correct