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Submission #789482

# Submission time Handle Problem Language Result Execution time Memory
789482 2023-07-21T12:40:32 Z RecursiveCo Connecting Supertrees (IOI20_supertrees) C++14
100 / 100
 202 ms 23012 KB 
// CF template, version 3.0

#include <bits/stdc++.h>
#include "supertrees.h"

using namespace std;

#define improvePerformance ios_base::sync_with_stdio(false); cin.tie(0)
#define getTest int t; cin >> t
#define eachTest for (int _var=0;_var<t;_var++)
#define get(name) int (name); cin >> (name)
#define out(o) cout << (o)
#define getList(cnt, name) vector<int> (name); for (int _=0;_<(cnt);_++) { get(a); (name).push_back(a); }
#define sortl(name) sort((name).begin(), (name).end())
#define rev(name) reverse((name).begin(), (name).end())
#define forto(name, var) for (int (var) = 0; (var) < (name); (var)++)
#define decision(b) if (b){out("YES");}else{out("NO");}

//#define int long long

vector<int> parent;
vector<int> cycle;

int find(int v) {
    if (parent[v] == v) return v;
    return parent[v] = find(parent[v]);
}

void unite(int a, int b, bool has, bool matters) {
    a = find(a);
    b = find(b);
    parent[a] = b;
    if (!matters) return;
    if (has || cycle[a] || cycle[b]) cycle[b] = 1;
}

int construct(vector<vector<int>> p) {
    // 100 points
    int n = p.size();
    forto(n, i) parent.push_back(i), cycle.push_back(0);
    forto(n, i) {
        forto(n, j) {
            if (p[i][j]) unite(i, j, p[i][j] > 1, true);
        }
    }
    forto(n, i) {
        forto(n, j) {
            if (!p[i][j] && find(i) == find(j)) return 0;
        }
    }
    vector<pair<int, vector<int>>> comps;
    forto(n, i) {
        if (i == find(i)) {
            vector<int> cur;
            forto(n, j) {
                if (find(j) == i) cur.push_back(j);
            }
            comps.push_back({cycle[i], cur});
        }
    }
    vector<vector<int>> B(n, vector<int>(n, 0));
    for (auto comp: comps) {
        int len = comp.second.size();
        if (!comp.first) {
            forto(len - 1, i) {
                int a = comp.second[i];
                int b = comp.second[i + 1];
                B[a][b] = 1;
                B[b][a] = 1;
            }
        } else {
            forto(n, i) parent[i] = i;
            bool three = false;
            forto(len, i) {
                forto(len, j) {
                    int a = comp.second[i];
                    int b = comp.second[j];
                    if (p[a][b] == 1) unite(a, b, false, false); // same tree
                    if (p[a][b] == 3) three = true;
                }
            }
            for (int a: comp.second) {
                for (int b: comp.second) {
                    if (three && p[a][b] == 2) return 0;
                }
            }
            vector<vector<int>> trees;
            for (int num: comp.second) {
                if (find(num) == num) {
                    vector<int> cur;
                    for (int el: comp.second) {
                        if (find(el) == num) cur.push_back(el);
                    }
                    trees.push_back(cur);
                }
            }
            if (trees.size() == 1) return 0;
            if (trees.size() == 2) return 0;
            if (three) return 0;
            bool can = true;
            for (vector<int> tree: trees) {
                for (int a: tree) {
                    for (int b: tree) {
                        if (p[a][b] > 1) {
                            can = false;
                            break;
                        }
                    }
                    if (!can) break;
                }
                if (!can) break;
            }
            if (!can) return 0;
            for (vector<int> tree: trees) {
                int treelen = tree.size();
                forto(treelen - 1, i) {
                    int a = tree[i];
                    int b = tree[i + 1];
                    B[a][b] = 1;
                    B[b][a] = 1;
                }
            }
            forto(trees.size(), i) {
                int a = trees[i][0];
                int b = trees[(i + 1) % trees.size()][0];
                B[a][b] = 1;
                B[b][a] = 1;
            }
            if (three) {
                int a = trees[0][0];
                int b = trees[2][0];
                B[a][b] = 1;
                B[b][a] = 1;
            }
        }
    }
    build(B);
    return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:16:35: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   16 | #define forto(name, var) for (int (var) = 0; (var) < (name); (var)++)
      |                                   ^
supertrees.cpp:40:5: note: in expansion of macro 'forto'
   40 |     forto(n, i) parent.push_back(i), cycle.push_back(0);
      |     ^~~~~
supertrees.cpp:16:35: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   16 | #define forto(name, var) for (int (var) = 0; (var) < (name); (var)++)
      |                                   ^
supertrees.cpp:41:5: note: in expansion of macro 'forto'
   41 |     forto(n, i) {
      |     ^~~~~
supertrees.cpp:16:35: warning: unnecessary parentheses in declaration of 'j' [-Wparentheses]
   16 | #define forto(name, var) for (int (var) = 0; (var) < (name); (var)++)
      |                                   ^
supertrees.cpp:42:9: note: in expansion of macro 'forto'
   42 |         forto(n, j) {
      |         ^~~~~
supertrees.cpp:16:35: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   16 | #define forto(name, var) for (int (var) = 0; (var) < (name); (var)++)
      |                                   ^
supertrees.cpp:46:5: note: in expansion of macro 'forto'
   46 |     forto(n, i) {
      |     ^~~~~
supertrees.cpp:16:35: warning: unnecessary parentheses in declaration of 'j' [-Wparentheses]
   16 | #define forto(name, var) for (int (var) = 0; (var) < (name); (var)++)
      |                                   ^
supertrees.cpp:47:9: note: in expansion of macro 'forto'
   47 |         forto(n, j) {
      |         ^~~~~
supertrees.cpp:16:35: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   16 | #define forto(name, var) for (int (var) = 0; (var) < (name); (var)++)
      |                                   ^
supertrees.cpp:52:5: note: in expansion of macro 'forto'
   52 |     forto(n, i) {
      |     ^~~~~
supertrees.cpp:16:35: warning: unnecessary parentheses in declaration of 'j' [-Wparentheses]
   16 | #define forto(name, var) for (int (var) = 0; (var) < (name); (var)++)
      |                                   ^
supertrees.cpp:55:13: note: in expansion of macro 'forto'
   55 |             forto(n, j) {
      |             ^~~~~
supertrees.cpp:16:35: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   16 | #define forto(name, var) for (int (var) = 0; (var) < (name); (var)++)
      |                                   ^
supertrees.cpp:65:13: note: in expansion of macro 'forto'
   65 |             forto(len - 1, i) {
      |             ^~~~~
supertrees.cpp:16:35: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   16 | #define forto(name, var) for (int (var) = 0; (var) < (name); (var)++)
      |                                   ^
supertrees.cpp:72:13: note: in expansion of macro 'forto'
   72 |             forto(n, i) parent[i] = i;
      |             ^~~~~
supertrees.cpp:16:35: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   16 | #define forto(name, var) for (int (var) = 0; (var) < (name); (var)++)
      |                                   ^
supertrees.cpp:74:13: note: in expansion of macro 'forto'
   74 |             forto(len, i) {
      |             ^~~~~
supertrees.cpp:16:35: warning: unnecessary parentheses in declaration of 'j' [-Wparentheses]
   16 | #define forto(name, var) for (int (var) = 0; (var) < (name); (var)++)
      |                                   ^
supertrees.cpp:75:17: note: in expansion of macro 'forto'
   75 |                 forto(len, j) {
      |                 ^~~~~
supertrees.cpp:16:35: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   16 | #define forto(name, var) for (int (var) = 0; (var) < (name); (var)++)
      |                                   ^
supertrees.cpp:116:17: note: in expansion of macro 'forto'
  116 |                 forto(treelen - 1, i) {
      |                 ^~~~~
supertrees.cpp:16:35: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   16 | #define forto(name, var) for (int (var) = 0; (var) < (name); (var)++)
      |                                   ^
supertrees.cpp:123:13: note: in expansion of macro 'forto'
  123 |             forto(trees.size(), i) {
      |             ^~~~~
supertrees.cpp:16:52: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 | #define forto(name, var) for (int (var) = 0; (var) < (name); (var)++)
      |                                              ~~~~~~^~~~~~~~
supertrees.cpp:123:13: note: in expansion of macro 'forto'
  123 |             forto(trees.size(), i) {
      |             ^~~~~

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 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 7 ms 1240 KB Output is correct
7 Correct 187 ms 22880 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 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 7 ms 1240 KB Output is correct
7 Correct 187 ms 22880 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 296 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 1180 KB Output is correct
13 Correct 158 ms 22964 KB Output is correct
14 Correct 0 ms 304 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 3 ms 596 KB Output is correct
17 Correct 73 ms 9088 KB Output is correct
18 Correct 1 ms 300 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 45 ms 6256 KB Output is correct
21 Correct 167 ms 22932 KB Output is correct
22 Correct 160 ms 22936 KB Output is correct
23 Correct 202 ms 22884 KB Output is correct
24 Correct 159 ms 23012 KB Output is correct
25 Correct 68 ms 9064 KB Output is correct
26 Correct 64 ms 9044 KB Output is correct
27 Correct 164 ms 22956 KB Output is correct
28 Correct 159 ms 22952 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 304 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 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 7 ms 1248 KB Output is correct
9 Correct 158 ms 22836 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 8 ms 1260 KB Output is correct
13 Correct 166 ms 22828 KB Output is correct
14 Correct 1 ms 300 KB Output is correct
15 Correct 0 ms 300 KB Output is correct
16 Correct 3 ms 668 KB Output is correct
17 Correct 93 ms 8916 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 41 ms 6264 KB Output is correct
22 Correct 160 ms 22832 KB Output is correct
23 Correct 160 ms 22756 KB Output is correct
24 Correct 164 ms 22812 KB Output is correct
25 Correct 88 ms 12948 KB Output is correct
26 Correct 64 ms 8964 KB Output is correct
27 Correct 160 ms 22788 KB Output is correct
28 Correct 192 ms 22796 KB Output is correct
29 Correct 69 ms 12936 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 40 ms 6152 KB Output is correct
5 Correct 162 ms 22836 KB Output is correct
6 Correct 161 ms 22760 KB Output is correct
7 Correct 163 ms 22772 KB Output is correct
8 Correct 0 ms 300 KB Output is correct
9 Correct 44 ms 6240 KB Output is correct
10 Correct 161 ms 22776 KB Output is correct
11 Correct 167 ms 22768 KB Output is correct
12 Correct 167 ms 22772 KB Output is correct
13 Correct 0 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 45 ms 6260 KB Output is correct
17 Correct 161 ms 22792 KB Output is correct
18 Correct 160 ms 22820 KB Output is correct
19 Correct 161 ms 22800 KB Output is correct
20 Correct 158 ms 22848 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 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 7 ms 1240 KB Output is correct
7 Correct 187 ms 22880 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 296 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 1180 KB Output is correct
13 Correct 158 ms 22964 KB Output is correct
14 Correct 0 ms 304 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 3 ms 596 KB Output is correct
17 Correct 73 ms 9088 KB Output is correct
18 Correct 1 ms 300 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 45 ms 6256 KB Output is correct
21 Correct 167 ms 22932 KB Output is correct
22 Correct 160 ms 22936 KB Output is correct
23 Correct 202 ms 22884 KB Output is correct
24 Correct 159 ms 23012 KB Output is correct
25 Correct 68 ms 9064 KB Output is correct
26 Correct 64 ms 9044 KB Output is correct
27 Correct 164 ms 22956 KB Output is correct
28 Correct 159 ms 22952 KB Output is correct
29 Correct 0 ms 304 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 212 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 7 ms 1248 KB Output is correct
37 Correct 158 ms 22836 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 1 ms 212 KB Output is correct
40 Correct 8 ms 1260 KB Output is correct
41 Correct 166 ms 22828 KB Output is correct
42 Correct 1 ms 300 KB Output is correct
43 Correct 0 ms 300 KB Output is correct
44 Correct 3 ms 668 KB Output is correct
45 Correct 93 ms 8916 KB Output is correct
46 Correct 0 ms 212 KB Output is correct
47 Correct 0 ms 212 KB Output is correct
48 Correct 1 ms 212 KB Output is correct
49 Correct 41 ms 6264 KB Output is correct
50 Correct 160 ms 22832 KB Output is correct
51 Correct 160 ms 22756 KB Output is correct
52 Correct 164 ms 22812 KB Output is correct
53 Correct 88 ms 12948 KB Output is correct
54 Correct 64 ms 8964 KB Output is correct
55 Correct 160 ms 22788 KB Output is correct
56 Correct 192 ms 22796 KB Output is correct
57 Correct 69 ms 12936 KB Output is correct
58 Correct 1 ms 296 KB Output is correct
59 Correct 1 ms 212 KB Output is correct
60 Correct 4 ms 596 KB Output is correct
61 Correct 74 ms 8908 KB Output is correct
62 Correct 1 ms 212 KB Output is correct
63 Correct 1 ms 212 KB Output is correct
64 Correct 0 ms 212 KB Output is correct
65 Correct 40 ms 6260 KB Output is correct
66 Correct 67 ms 8944 KB Output is correct
67 Correct 66 ms 8860 KB Output is correct
68 Correct 64 ms 8976 KB Output is correct
69 Correct 67 ms 12876 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 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 7 ms 1240 KB Output is correct
7 Correct 187 ms 22880 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 296 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 1180 KB Output is correct
13 Correct 158 ms 22964 KB Output is correct
14 Correct 0 ms 304 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 3 ms 596 KB Output is correct
17 Correct 73 ms 9088 KB Output is correct
18 Correct 1 ms 300 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 45 ms 6256 KB Output is correct
21 Correct 167 ms 22932 KB Output is correct
22 Correct 160 ms 22936 KB Output is correct
23 Correct 202 ms 22884 KB Output is correct
24 Correct 159 ms 23012 KB Output is correct
25 Correct 68 ms 9064 KB Output is correct
26 Correct 64 ms 9044 KB Output is correct
27 Correct 164 ms 22956 KB Output is correct
28 Correct 159 ms 22952 KB Output is correct
29 Correct 0 ms 304 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 212 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 7 ms 1248 KB Output is correct
37 Correct 158 ms 22836 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 1 ms 212 KB Output is correct
40 Correct 8 ms 1260 KB Output is correct
41 Correct 166 ms 22828 KB Output is correct
42 Correct 1 ms 300 KB Output is correct
43 Correct 0 ms 300 KB Output is correct
44 Correct 3 ms 668 KB Output is correct
45 Correct 93 ms 8916 KB Output is correct
46 Correct 0 ms 212 KB Output is correct
47 Correct 0 ms 212 KB Output is correct
48 Correct 1 ms 212 KB Output is correct
49 Correct 41 ms 6264 KB Output is correct
50 Correct 160 ms 22832 KB Output is correct
51 Correct 160 ms 22756 KB Output is correct
52 Correct 164 ms 22812 KB Output is correct
53 Correct 88 ms 12948 KB Output is correct
54 Correct 64 ms 8964 KB Output is correct
55 Correct 160 ms 22788 KB Output is correct
56 Correct 192 ms 22796 KB Output is correct
57 Correct 69 ms 12936 KB Output is correct
58 Correct 0 ms 212 KB Output is correct
59 Correct 1 ms 212 KB Output is correct
60 Correct 0 ms 212 KB Output is correct
61 Correct 40 ms 6152 KB Output is correct
62 Correct 162 ms 22836 KB Output is correct
63 Correct 161 ms 22760 KB Output is correct
64 Correct 163 ms 22772 KB Output is correct
65 Correct 0 ms 300 KB Output is correct
66 Correct 44 ms 6240 KB Output is correct
67 Correct 161 ms 22776 KB Output is correct
68 Correct 167 ms 22768 KB Output is correct
69 Correct 167 ms 22772 KB Output is correct
70 Correct 0 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 45 ms 6260 KB Output is correct
74 Correct 161 ms 22792 KB Output is correct
75 Correct 160 ms 22820 KB Output is correct
76 Correct 161 ms 22800 KB Output is correct
77 Correct 158 ms 22848 KB Output is correct
78 Correct 1 ms 296 KB Output is correct
79 Correct 1 ms 212 KB Output is correct
80 Correct 4 ms 596 KB Output is correct
81 Correct 74 ms 8908 KB Output is correct
82 Correct 1 ms 212 KB Output is correct
83 Correct 1 ms 212 KB Output is correct
84 Correct 0 ms 212 KB Output is correct
85 Correct 40 ms 6260 KB Output is correct
86 Correct 67 ms 8944 KB Output is correct
87 Correct 66 ms 8860 KB Output is correct
88 Correct 64 ms 8976 KB Output is correct
89 Correct 67 ms 12876 KB Output is correct
90 Correct 1 ms 212 KB Output is correct
91 Correct 0 ms 212 KB Output is correct
92 Correct 4 ms 596 KB Output is correct
93 Correct 73 ms 9476 KB Output is correct
94 Correct 1 ms 212 KB Output is correct
95 Correct 0 ms 212 KB Output is correct
96 Correct 0 ms 212 KB Output is correct
97 Correct 16 ms 2772 KB Output is correct
98 Correct 66 ms 9020 KB Output is correct
99 Correct 65 ms 9448 KB Output is correct
100 Correct 64 ms 9064 KB Output is correct
101 Correct 73 ms 13600 KB Output is correct
102 Correct 76 ms 13440 KB Output is correct
103 Correct 88 ms 14068 KB Output is correct
104 Correct 82 ms 14064 KB Output is correct
105 Correct 73 ms 10096 KB Output is correct