oj.uz

Submission #300526

# Submission time Handle Problem Language Result Execution time Memory
300526 2020-09-17T08:45:32 Z davitmarg Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 264 ms 26328 KB 
/*
DavitMarg
In a honky-tonk,
Down in Mexico
*/
#include <iostream>
#include <algorithm>
#include <cmath>
#include <vector>
#include <string>
#include <cstring>
#include <map>
#include <unordered_map>
#include <set>
#include <unordered_set>
#include <queue>
#include <iomanip>
#include <bitset>
#include <stack>
#include <cassert>
#include <iterator>
#include <fstream>
#define mod 1000000007ll
#define LL long long
#define LD long double
#define MP make_pair
#define PB push_back
#define all(v) v.begin(), v.end()
#define fastIO ios::sync_with_stdio(false); cin.tie(0)
using namespace std;
const int N = 1005;

#ifndef death
#include "supertrees.h"
#endif

#ifdef death

void build(vector<vector<int>> b)
{
    for (int i = 0; i < b.size(); i++)
    {
        for (int j = 0; j < b.size(); j++)
            cout << b[i][j] << " ";
        cout << endl;
    }
}

#endif

int parent[N];

void init(int n)
{
    for (int i = 0; i < n; i++)
        parent[i] = i;
}

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

void dsu(int a, int b)
{
    a = par(a);
    b = par(b);
    if (a == b)
        return;
    parent[b] = a;
}

int n,z;
vector<vector<int>> ans,p;

void add(int a, int b)
{
    ans[a][b] = ans[b][a] = 1;
}

void solve(vector<int> v)
{
    init(v.size());
    for (int i = 0; i < v.size(); i++)
        for (int j = i + 1; j < v.size(); j++)
            if (p[v[i]][v[j]] == 1)
                dsu(i, j);

    for (int i = 0; i < v.size(); i++)
        for (int j = i + 1; j < v.size(); j++)
            if (p[v[i]][v[j]] == 2 && par(i) == par(j))
            {
                z = 1;
                return;
            }
    map<int, vector<int>> VS;
    vector<int> V;
    for (int i = 0; i < v.size(); i++)
        VS[v[par(i)]].PB(v[i]);

    for (auto it = VS.begin(); it != VS.end(); ++it)
    {
        for (int i = 0; i < it->second.size() - 1; i++)
            add(it->second[i], it->second[i + 1]);
        V.push_back(it->first);
    }

    if (V.size() > 2)
    {
        for (int i = 0; i < V.size(); i++)
            add(V[i], V[(i + 1) % V.size()]);
    }
    else if (V.size() == 2)
    {
        z = 1;

    }
       
}

int construct(vector<vector<int>> P)
{
    p = P;
    n = p.size();
    ans.resize(n, vector<int>(n,0));
    init(n);
    for (int i = 0; i < n; i++)
        for (int j = i + 1; j < n; j++)
            if (p[i][j])
            {
                dsu(i, j);
                if (p[i][j] == 3)
                    return 0;
            }

    map<int, vector<int>> vs;
    for (int i = 0; i < n; i++)
    {
        for (int j = i + 1; j < n; j++)
            if (p[i][j] == 0 && par(i) == par(j))
                return 0;
        vs[par(i)].push_back(i);
    }

    for (auto it = vs.begin(); it != vs.end(); ++it)
        solve(it->second);
    if (z)
        return 0;
    build(ans);
    return 1;
}

#ifdef death
int main()
{
    fastIO;
    vector<vector<int>> P;

    int nn;
    cin >> nn;
    for (int i = 0; i < nn; i++)
    {
        P.push_back(vector<int>());
        for (int j = 0; j < nn; j++)
        {
            int x;
            cin >> x;
            P[i].push_back(x);
        }
    }

    cout << construct(P) << endl;
    return 0;
}
#endif
/*

4
1 1 0 0 
1 1 0 0 
0 0 1 1 
0 0 1 1 

*/

Compilation message

supertrees.cpp: In function 'void solve(std::vector<int>)':
supertrees.cpp:86:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   86 |     for (int i = 0; i < v.size(); i++)
      |                     ~~^~~~~~~~~~
supertrees.cpp:87:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   87 |         for (int j = i + 1; j < v.size(); j++)
      |                             ~~^~~~~~~~~~
supertrees.cpp:91:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   91 |     for (int i = 0; i < v.size(); i++)
      |                     ~~^~~~~~~~~~
supertrees.cpp:92:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   92 |         for (int j = i + 1; j < v.size(); j++)
      |                             ~~^~~~~~~~~~
supertrees.cpp:100:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  100 |     for (int i = 0; i < v.size(); i++)
      |                     ~~^~~~~~~~~~
supertrees.cpp:105:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  105 |         for (int i = 0; i < it->second.size() - 1; i++)
      |                         ~~^~~~~~~~~~~~~~~~~~~~~~~
supertrees.cpp:112:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  112 |         for (int i = 0; i < V.size(); i++)
      |                         ~~^~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 1 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 11 ms 1408 KB Output is correct
7 Correct 263 ms 26076 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 1 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 11 ms 1408 KB Output is correct
7 Correct 263 ms 26076 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 256 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 11 ms 1408 KB Output is correct
13 Correct 246 ms 26180 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 1 ms 256 KB Output is correct
16 Correct 5 ms 1056 KB Output is correct
17 Correct 120 ms 16152 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 60 ms 6776 KB Output is correct
21 Correct 264 ms 26104 KB Output is correct
22 Correct 254 ms 26328 KB Output is correct
23 Correct 256 ms 26104 KB Output is correct
24 Correct 251 ms 26232 KB Output is correct
25 Correct 105 ms 16120 KB Output is correct
26 Correct 102 ms 16120 KB Output is correct
27 Correct 257 ms 26104 KB Output is correct
28 Correct 247 ms 26136 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 1 ms 256 KB Output is correct
7 Correct 1 ms 256 KB Output is correct
8 Correct 10 ms 1408 KB Output is correct
9 Correct 239 ms 26104 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 11 ms 1408 KB Output is correct
13 Correct 261 ms 26232 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 1 ms 256 KB Output is correct
16 Correct 5 ms 896 KB Output is correct
17 Correct 115 ms 16248 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 1 ms 256 KB Output is correct
21 Correct 60 ms 6776 KB Output is correct
22 Correct 244 ms 26104 KB Output is correct
23 Correct 239 ms 26104 KB Output is correct
24 Correct 259 ms 26104 KB Output is correct
25 Correct 106 ms 16248 KB Output is correct
26 Correct 107 ms 16120 KB Output is correct
27 Correct 239 ms 26232 KB Output is correct
28 Correct 264 ms 26104 KB Output is correct
29 Correct 105 ms 16248 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 63 ms 6776 KB Output is correct
5 Correct 242 ms 26232 KB Output is correct
6 Correct 243 ms 26104 KB Output is correct
7 Correct 257 ms 26232 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 64 ms 6776 KB Output is correct
10 Correct 245 ms 26104 KB Output is correct
11 Correct 239 ms 26104 KB Output is correct
12 Correct 259 ms 26104 KB Output is correct
13 Correct 1 ms 256 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 1 ms 256 KB Output is correct
16 Correct 60 ms 6992 KB Output is correct
17 Correct 243 ms 26104 KB Output is correct
18 Correct 252 ms 26108 KB Output is correct
19 Correct 249 ms 26148 KB Output is correct
20 Correct 244 ms 26104 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 1 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 11 ms 1408 KB Output is correct
7 Correct 263 ms 26076 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 256 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 11 ms 1408 KB Output is correct
13 Correct 246 ms 26180 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 1 ms 256 KB Output is correct
16 Correct 5 ms 1056 KB Output is correct
17 Correct 120 ms 16152 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 60 ms 6776 KB Output is correct
21 Correct 264 ms 26104 KB Output is correct
22 Correct 254 ms 26328 KB Output is correct
23 Correct 256 ms 26104 KB Output is correct
24 Correct 251 ms 26232 KB Output is correct
25 Correct 105 ms 16120 KB Output is correct
26 Correct 102 ms 16120 KB Output is correct
27 Correct 257 ms 26104 KB Output is correct
28 Correct 247 ms 26136 KB Output is correct
29 Correct 1 ms 256 KB Output is correct
30 Correct 1 ms 256 KB Output is correct
31 Correct 1 ms 256 KB Output is correct
32 Correct 1 ms 384 KB Output is correct
33 Correct 1 ms 256 KB Output is correct
34 Correct 1 ms 256 KB Output is correct
35 Correct 1 ms 256 KB Output is correct
36 Correct 10 ms 1408 KB Output is correct
37 Correct 239 ms 26104 KB Output is correct
38 Correct 1 ms 384 KB Output is correct
39 Correct 1 ms 256 KB Output is correct
40 Correct 11 ms 1408 KB Output is correct
41 Correct 261 ms 26232 KB Output is correct
42 Correct 1 ms 256 KB Output is correct
43 Correct 1 ms 256 KB Output is correct
44 Correct 5 ms 896 KB Output is correct
45 Correct 115 ms 16248 KB Output is correct
46 Correct 1 ms 256 KB Output is correct
47 Correct 1 ms 384 KB Output is correct
48 Correct 1 ms 256 KB Output is correct
49 Correct 60 ms 6776 KB Output is correct
50 Correct 244 ms 26104 KB Output is correct
51 Correct 239 ms 26104 KB Output is correct
52 Correct 259 ms 26104 KB Output is correct
53 Correct 106 ms 16248 KB Output is correct
54 Correct 107 ms 16120 KB Output is correct
55 Correct 239 ms 26232 KB Output is correct
56 Correct 264 ms 26104 KB Output is correct
57 Correct 105 ms 16248 KB Output is correct
58 Correct 1 ms 256 KB Output is correct
59 Correct 1 ms 256 KB Output is correct
60 Correct 5 ms 1152 KB Output is correct
61 Correct 116 ms 16120 KB Output is correct
62 Correct 1 ms 256 KB Output is correct
63 Correct 1 ms 256 KB Output is correct
64 Correct 1 ms 256 KB Output is correct
65 Correct 60 ms 6776 KB Output is correct
66 Correct 103 ms 16120 KB Output is correct
67 Correct 105 ms 16120 KB Output is correct
68 Correct 109 ms 16120 KB Output is correct
69 Correct 103 ms 16248 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 1 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 11 ms 1408 KB Output is correct
7 Correct 263 ms 26076 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 256 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 11 ms 1408 KB Output is correct
13 Correct 246 ms 26180 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 1 ms 256 KB Output is correct
16 Correct 5 ms 1056 KB Output is correct
17 Correct 120 ms 16152 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 60 ms 6776 KB Output is correct
21 Correct 264 ms 26104 KB Output is correct
22 Correct 254 ms 26328 KB Output is correct
23 Correct 256 ms 26104 KB Output is correct
24 Correct 251 ms 26232 KB Output is correct
25 Correct 105 ms 16120 KB Output is correct
26 Correct 102 ms 16120 KB Output is correct
27 Correct 257 ms 26104 KB Output is correct
28 Correct 247 ms 26136 KB Output is correct
29 Correct 1 ms 256 KB Output is correct
30 Correct 1 ms 256 KB Output is correct
31 Correct 1 ms 256 KB Output is correct
32 Correct 1 ms 384 KB Output is correct
33 Correct 1 ms 256 KB Output is correct
34 Correct 1 ms 256 KB Output is correct
35 Correct 1 ms 256 KB Output is correct
36 Correct 10 ms 1408 KB Output is correct
37 Correct 239 ms 26104 KB Output is correct
38 Correct 1 ms 384 KB Output is correct
39 Correct 1 ms 256 KB Output is correct
40 Correct 11 ms 1408 KB Output is correct
41 Correct 261 ms 26232 KB Output is correct
42 Correct 1 ms 256 KB Output is correct
43 Correct 1 ms 256 KB Output is correct
44 Correct 5 ms 896 KB Output is correct
45 Correct 115 ms 16248 KB Output is correct
46 Correct 1 ms 256 KB Output is correct
47 Correct 1 ms 384 KB Output is correct
48 Correct 1 ms 256 KB Output is correct
49 Correct 60 ms 6776 KB Output is correct
50 Correct 244 ms 26104 KB Output is correct
51 Correct 239 ms 26104 KB Output is correct
52 Correct 259 ms 26104 KB Output is correct
53 Correct 106 ms 16248 KB Output is correct
54 Correct 107 ms 16120 KB Output is correct
55 Correct 239 ms 26232 KB Output is correct
56 Correct 264 ms 26104 KB Output is correct
57 Correct 105 ms 16248 KB Output is correct
58 Correct 1 ms 256 KB Output is correct
59 Correct 1 ms 256 KB Output is correct
60 Correct 1 ms 256 KB Output is correct
61 Correct 63 ms 6776 KB Output is correct
62 Correct 242 ms 26232 KB Output is correct
63 Correct 243 ms 26104 KB Output is correct
64 Correct 257 ms 26232 KB Output is correct
65 Correct 1 ms 256 KB Output is correct
66 Correct 64 ms 6776 KB Output is correct
67 Correct 245 ms 26104 KB Output is correct
68 Correct 239 ms 26104 KB Output is correct
69 Correct 259 ms 26104 KB Output is correct
70 Correct 1 ms 256 KB Output is correct
71 Correct 1 ms 256 KB Output is correct
72 Correct 1 ms 256 KB Output is correct
73 Correct 60 ms 6992 KB Output is correct
74 Correct 243 ms 26104 KB Output is correct
75 Correct 252 ms 26108 KB Output is correct
76 Correct 249 ms 26148 KB Output is correct
77 Correct 244 ms 26104 KB Output is correct
78 Correct 1 ms 256 KB Output is correct
79 Correct 1 ms 256 KB Output is correct
80 Correct 5 ms 1152 KB Output is correct
81 Correct 116 ms 16120 KB Output is correct
82 Correct 1 ms 256 KB Output is correct
83 Correct 1 ms 256 KB Output is correct
84 Correct 1 ms 256 KB Output is correct
85 Correct 60 ms 6776 KB Output is correct
86 Correct 103 ms 16120 KB Output is correct
87 Correct 105 ms 16120 KB Output is correct
88 Correct 109 ms 16120 KB Output is correct
89 Correct 103 ms 16248 KB Output is correct
90 Correct 1 ms 256 KB Output is correct
91 Correct 1 ms 256 KB Output is correct
92 Correct 5 ms 1024 KB Output is correct
93 Correct 119 ms 16120 KB Output is correct
94 Correct 1 ms 256 KB Output is correct
95 Correct 1 ms 384 KB Output is correct
96 Correct 1 ms 256 KB Output is correct
97 Correct 26 ms 4352 KB Output is correct
98 Correct 106 ms 16120 KB Output is correct
99 Correct 105 ms 16120 KB Output is correct
100 Correct 104 ms 16120 KB Output is correct
101 Correct 107 ms 16120 KB Output is correct
102 Correct 115 ms 16120 KB Output is correct
103 Correct 110 ms 16120 KB Output is correct
104 Correct 113 ms 16248 KB Output is correct
105 Correct 110 ms 16120 KB Output is correct