oj.uz

답안 #300525

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
300525 2020-09-17T08:43:24 Z davitmarg 슈퍼트리 잇기 (IOI20_supertrees) C++17
56 / 100
 273 ms 26360 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()>1)
        for (int i = 0; i < V.size(); i++)
            add(V[i], V[(i + 1) % V.size()]);
}

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:111:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  111 |         for (int i = 0; i < V.size(); i++)
      |                         ~~^~~~~~~~~~

Subtask #1
11.0 / 11.0

# 결과 실행 시간 메모리 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 254 ms 26104 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 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 254 ms 26104 KB Output is correct
8 Correct 1 ms 256 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 10 ms 1408 KB Output is correct
13 Correct 248 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 114 ms 16120 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 1 ms 256 KB Output is correct
20 Correct 63 ms 6776 KB Output is correct
21 Correct 241 ms 26104 KB Output is correct
22 Correct 238 ms 26104 KB Output is correct
23 Correct 261 ms 26104 KB Output is correct
24 Correct 235 ms 26104 KB Output is correct
25 Correct 102 ms 16120 KB Output is correct
26 Correct 101 ms 16120 KB Output is correct
27 Correct 273 ms 26200 KB Output is correct
28 Correct 250 ms 26104 KB Output is correct

Subtask #3
0 / 19.0

# 결과 실행 시간 메모리 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 Incorrect 1 ms 256 KB Answer gives possible 1 while actual possible 0
5 Halted 0 ms 0 KB -

Subtask #4
35.0 / 35.0

# 결과 실행 시간 메모리 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 61 ms 6776 KB Output is correct
5 Correct 251 ms 26104 KB Output is correct
6 Correct 242 ms 26232 KB Output is correct
7 Correct 262 ms 26360 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 60 ms 6808 KB Output is correct
10 Correct 249 ms 26232 KB Output is correct
11 Correct 243 ms 26232 KB Output is correct
12 Correct 251 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 64 ms 6776 KB Output is correct
17 Correct 244 ms 26104 KB Output is correct
18 Correct 243 ms 26104 KB Output is correct
19 Correct 244 ms 26104 KB Output is correct
20 Correct 246 ms 26232 KB Output is correct

Subtask #5
0 / 21.0

# 결과 실행 시간 메모리 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 254 ms 26104 KB Output is correct
8 Correct 1 ms 256 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 10 ms 1408 KB Output is correct
13 Correct 248 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 114 ms 16120 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 1 ms 256 KB Output is correct
20 Correct 63 ms 6776 KB Output is correct
21 Correct 241 ms 26104 KB Output is correct
22 Correct 238 ms 26104 KB Output is correct
23 Correct 261 ms 26104 KB Output is correct
24 Correct 235 ms 26104 KB Output is correct
25 Correct 102 ms 16120 KB Output is correct
26 Correct 101 ms 16120 KB Output is correct
27 Correct 273 ms 26200 KB Output is correct
28 Correct 250 ms 26104 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 Incorrect 1 ms 256 KB Answer gives possible 1 while actual possible 0
33 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# 결과 실행 시간 메모리 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 254 ms 26104 KB Output is correct
8 Correct 1 ms 256 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 10 ms 1408 KB Output is correct
13 Correct 248 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 114 ms 16120 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 1 ms 256 KB Output is correct
20 Correct 63 ms 6776 KB Output is correct
21 Correct 241 ms 26104 KB Output is correct
22 Correct 238 ms 26104 KB Output is correct
23 Correct 261 ms 26104 KB Output is correct
24 Correct 235 ms 26104 KB Output is correct
25 Correct 102 ms 16120 KB Output is correct
26 Correct 101 ms 16120 KB Output is correct
27 Correct 273 ms 26200 KB Output is correct
28 Correct 250 ms 26104 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 Incorrect 1 ms 256 KB Answer gives possible 1 while actual possible 0
33 Halted 0 ms 0 KB -