oj.uz

Submission #789419

# Submission time Handle Problem Language Result Execution time Memory
789419 2023-07-21T11:19:04 Z RecursiveCo Connecting Supertrees (IOI20_supertrees) C++14
56 / 100
 163 ms 22076 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) {
    a = find(a);
    b = find(b);
    parent[a] = b;
    if (has || cycle[a] || cycle[b]) cycle[b] = 1;
}

int construct(vector<vector<int>> p) {
    // 96 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] == 2);
        }
    }
    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;
            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); // same tree
                }
            }
            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);
                }
            }
            bool can = true;
            for (vector<int> tree: trees) {
                for (int a: tree) {
                    for (int b: tree) {
                        if (p[a][b] == 2) {
                            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;
            }
        }
    }
    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:39:5: note: in expansion of macro 'forto'
   39 |     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:40:5: note: in expansion of macro 'forto'
   40 |     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:41:9: note: in expansion of macro 'forto'
   41 |         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:45:5: note: in expansion of macro 'forto'
   45 |     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:46:9: note: in expansion of macro 'forto'
   46 |         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:51:5: note: in expansion of macro 'forto'
   51 |     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:54:13: note: in expansion of macro 'forto'
   54 |             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:64:13: note: in expansion of macro 'forto'
   64 |             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:71:13: note: in expansion of macro 'forto'
   71 |             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:72:13: note: in expansion of macro 'forto'
   72 |             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:73:17: note: in expansion of macro 'forto'
   73 |                 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:105:17: note: in expansion of macro 'forto'
  105 |                 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:112:13: note: in expansion of macro 'forto'
  112 |             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:112:13: note: in expansion of macro 'forto'
  112 |             forto(trees.size(), i) {
      |             ^~~~~

Subtask #1
11.0 / 11.0

# 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 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 7 ms 1108 KB Output is correct
7 Correct 158 ms 22016 KB Output is correct

Subtask #2
10.0 / 10.0

# 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 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 7 ms 1108 KB Output is correct
7 Correct 158 ms 22016 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 7 ms 1108 KB Output is correct
13 Correct 158 ms 22004 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 3 ms 588 KB Output is correct
17 Correct 72 ms 8076 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 40 ms 5708 KB Output is correct
21 Correct 161 ms 22024 KB Output is correct
22 Correct 158 ms 22032 KB Output is correct
23 Correct 161 ms 21964 KB Output is correct
24 Correct 158 ms 22032 KB Output is correct
25 Correct 72 ms 8200 KB Output is correct
26 Correct 62 ms 8196 KB Output is correct
27 Correct 162 ms 22024 KB Output is correct
28 Correct 157 ms 22076 KB Output is correct

Subtask #3
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Incorrect 0 ms 212 KB Answer gives possible 1 while actual possible 0
5 Halted 0 ms 0 KB -

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 43 ms 5708 KB Output is correct
5 Correct 158 ms 21968 KB Output is correct
6 Correct 158 ms 21968 KB Output is correct
7 Correct 162 ms 22004 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 40 ms 5784 KB Output is correct
10 Correct 160 ms 21972 KB Output is correct
11 Correct 160 ms 22032 KB Output is correct
12 Correct 163 ms 22028 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 40 ms 5684 KB Output is correct
17 Correct 161 ms 22020 KB Output is correct
18 Correct 159 ms 21964 KB Output is correct
19 Correct 159 ms 22028 KB Output is correct
20 Correct 158 ms 22000 KB Output is correct

Subtask #5
0 / 21.0

# 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 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 7 ms 1108 KB Output is correct
7 Correct 158 ms 22016 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 7 ms 1108 KB Output is correct
13 Correct 158 ms 22004 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 3 ms 588 KB Output is correct
17 Correct 72 ms 8076 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 40 ms 5708 KB Output is correct
21 Correct 161 ms 22024 KB Output is correct
22 Correct 158 ms 22032 KB Output is correct
23 Correct 161 ms 21964 KB Output is correct
24 Correct 158 ms 22032 KB Output is correct
25 Correct 72 ms 8200 KB Output is correct
26 Correct 62 ms 8196 KB Output is correct
27 Correct 162 ms 22024 KB Output is correct
28 Correct 157 ms 22076 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Incorrect 0 ms 212 KB Answer gives possible 1 while actual possible 0
33 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# 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 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 7 ms 1108 KB Output is correct
7 Correct 158 ms 22016 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 7 ms 1108 KB Output is correct
13 Correct 158 ms 22004 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 3 ms 588 KB Output is correct
17 Correct 72 ms 8076 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 40 ms 5708 KB Output is correct
21 Correct 161 ms 22024 KB Output is correct
22 Correct 158 ms 22032 KB Output is correct
23 Correct 161 ms 21964 KB Output is correct
24 Correct 158 ms 22032 KB Output is correct
25 Correct 72 ms 8200 KB Output is correct
26 Correct 62 ms 8196 KB Output is correct
27 Correct 162 ms 22024 KB Output is correct
28 Correct 157 ms 22076 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Incorrect 0 ms 212 KB Answer gives possible 1 while actual possible 0
33 Halted 0 ms 0 KB -