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Submission #293085

# Submission time Handle Problem Language Result Execution time Memory
293085 2020-09-07T16:05:17 Z Kastanda Simurgh (IOI17_simurgh) C++11
30 / 100
 3000 ms 7928 KB 
// M
#include<bits/stdc++.h>
#include "simurgh.h"
using namespace std;
const int N = 505, MXM = N * N / 2;
int n, m, A[MXM], B[MXM];
bool Del[MXM], Sure[MXM];
int P[N], M[N], MR[N], PE[N];
vector < int > Tre, Cyc;
vector < pair < int , int > > Adj[N];
void DFS(int v, int p, int pe)
{
        M[v] = 1;
        P[v] = p;
        PE[v] = pe;
        /*for (auto e : Adj[v])
        {
                int u = e.first;
                int id = e.second;
                if (id == pe || Del[id])
                        continue;
                if (Sure[id] && !M[u])
                        DFS(u, v, id);
        }*/
        for (auto e : Adj[v])
        {
                int u = e.first;
                int id = e.second;
                if (id == pe || Del[id])
                        continue;
                //if (Sure[id])
                        //continue;
                if (!M[u])
                        DFS(u, v, id);
                else if (M[u] == 1 && !Cyc.size())
                {
                        int nw = v;
                        while (nw != u)
                        {
                                if (!Sure[PE[nw]])
                                        Cyc.push_back(PE[nw]);
                                else
                                        Tre.push_back(PE[nw]);
                                MR[nw] = 1;
                                nw = P[nw];
                        }
                        if (!Sure[id])
                                Cyc.push_back(id);
                        else
                                Tre.push_back(id);
                }
        }
        if (pe != -1 && !MR[v])
                Tre.push_back(pe);
        M[v] = 2;
}

vector < int > find_roads(int _n, vector < int > _u, vector < int > _v)
{
        n = _n;
        m = (int)_u.size();
        for (int i = 0; i < m; i ++)
                A[i] = _u[i], B[i] = _v[i];

        for (int i = 0; i < m; i ++)
        {
                Adj[A[i]].push_back({B[i], i});
                Adj[B[i]].push_back({A[i], i});
        }
        assert(m <= 3e4);

        while (true)
        {
                Tre.clear();
                Cyc.clear();
                memset(M, 0, sizeof(M));
                memset(MR, 0, sizeof(MR));
                DFS(0, -1, -1);
                if (!Cyc.size())
                        break;
                vector < int > Val(n + 1, -1);
                int mx = -1, mn = n;
                for (int i = 0; i < (int)Cyc.size(); i ++)
                {
                        vector < int > tmp = Tre;
                        for (int j = 0; j < (int)Cyc.size(); j ++)
                                if (i != j)
                                        tmp.push_back(Cyc[j]);
                        assert(tmp.size() == n - 1);
                        Val[i] = count_common_roads(tmp);

                        /*printf("Asking :: %d || ", Val[i]);
                        for (int j : tmp)
                                printf("%d ", j);
                        printf("\n");*/

                        mn = min(mn, Val[i]);
                        mx = max(mx, Val[i]);
                }
                for (int i = 0; i < (int)Cyc.size(); i ++)
                        if (Val[i] == mx)
                                Del[Cyc[i]] = 1;
                if (mn < mx)
                {
                        for (int i = 0; i < (int)Cyc.size(); i ++)
                                if (Val[i] == mn)
                                        Sure[Cyc[i]] = 1;
                }
        }
        vector < int > vec;
        for (int i = 0; i < m; i ++)
                if (Del[i] == 0)
                        vec.push_back(i);
        assert(vec.size() == n - 1);
        return vec;
}

Compilation message

In file included from /usr/include/c++/9/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:33,
                 from simurgh.cpp:2:
simurgh.cpp: In function 'std::vector<int> find_roads(int, std::vector<int>, std::vector<int>)':
simurgh.cpp:89:43: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   89 |                         assert(tmp.size() == n - 1);
      |                                ~~~~~~~~~~~^~~~~~~~
simurgh.cpp:114:27: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  114 |         assert(vec.size() == n - 1);
      |                ~~~~~~~~~~~^~~~~~~~

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB correct
2 Correct 0 ms 384 KB correct
3 Correct 0 ms 384 KB correct
4 Correct 0 ms 384 KB correct
5 Correct 1 ms 384 KB correct
6 Correct 1 ms 384 KB correct
7 Correct 0 ms 384 KB correct
8 Correct 0 ms 384 KB correct
9 Correct 0 ms 384 KB correct
10 Correct 1 ms 384 KB correct
11 Correct 1 ms 384 KB correct
12 Correct 0 ms 384 KB correct
13 Correct 0 ms 384 KB correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB correct
2 Correct 0 ms 384 KB correct
3 Correct 0 ms 384 KB correct
4 Correct 0 ms 384 KB correct
5 Correct 1 ms 384 KB correct
6 Correct 1 ms 384 KB correct
7 Correct 0 ms 384 KB correct
8 Correct 0 ms 384 KB correct
9 Correct 0 ms 384 KB correct
10 Correct 1 ms 384 KB correct
11 Correct 1 ms 384 KB correct
12 Correct 0 ms 384 KB correct
13 Correct 0 ms 384 KB correct
14 Correct 7 ms 384 KB correct
15 Correct 12 ms 384 KB correct
16 Correct 8 ms 384 KB correct
17 Correct 5 ms 384 KB correct
18 Correct 2 ms 384 KB correct
19 Correct 6 ms 384 KB correct
20 Correct 5 ms 384 KB correct
21 Correct 4 ms 384 KB correct
22 Correct 4 ms 384 KB correct
23 Correct 4 ms 384 KB correct
24 Correct 4 ms 384 KB correct
25 Correct 1 ms 384 KB correct
26 Correct 4 ms 384 KB correct
27 Correct 4 ms 384 KB correct
28 Correct 2 ms 384 KB correct
29 Correct 1 ms 384 KB correct
30 Correct 4 ms 384 KB correct
31 Correct 4 ms 384 KB correct
32 Correct 4 ms 384 KB correct
33 Correct 3 ms 384 KB correct

Subtask #3
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB correct
2 Correct 0 ms 384 KB correct
3 Correct 0 ms 384 KB correct
4 Correct 0 ms 384 KB correct
5 Correct 1 ms 384 KB correct
6 Correct 1 ms 384 KB correct
7 Correct 0 ms 384 KB correct
8 Correct 0 ms 384 KB correct
9 Correct 0 ms 384 KB correct
10 Correct 1 ms 384 KB correct
11 Correct 1 ms 384 KB correct
12 Correct 0 ms 384 KB correct
13 Correct 0 ms 384 KB correct
14 Correct 7 ms 384 KB correct
15 Correct 12 ms 384 KB correct
16 Correct 8 ms 384 KB correct
17 Correct 5 ms 384 KB correct
18 Correct 2 ms 384 KB correct
19 Correct 6 ms 384 KB correct
20 Correct 5 ms 384 KB correct
21 Correct 4 ms 384 KB correct
22 Correct 4 ms 384 KB correct
23 Correct 4 ms 384 KB correct
24 Correct 4 ms 384 KB correct
25 Correct 1 ms 384 KB correct
26 Correct 4 ms 384 KB correct
27 Correct 4 ms 384 KB correct
28 Correct 2 ms 384 KB correct
29 Correct 1 ms 384 KB correct
30 Correct 4 ms 384 KB correct
31 Correct 4 ms 384 KB correct
32 Correct 4 ms 384 KB correct
33 Correct 3 ms 384 KB correct
34 Correct 1191 ms 1672 KB correct
35 Correct 980 ms 1656 KB correct
36 Correct 520 ms 1416 KB correct
37 Correct 12 ms 384 KB correct
38 Correct 1216 ms 1660 KB correct
39 Correct 1002 ms 1564 KB correct
40 Correct 629 ms 1656 KB correct
41 Execution timed out 3068 ms 1916 KB Time limit exceeded
42 Halted 0 ms 0 KB -

Subtask #4
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB correct
2 Correct 0 ms 384 KB correct
3 Runtime error 28 ms 7928 KB Execution killed with signal 11
4 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB correct
2 Correct 0 ms 384 KB correct
3 Correct 0 ms 384 KB correct
4 Correct 0 ms 384 KB correct
5 Correct 1 ms 384 KB correct
6 Correct 1 ms 384 KB correct
7 Correct 0 ms 384 KB correct
8 Correct 0 ms 384 KB correct
9 Correct 0 ms 384 KB correct
10 Correct 1 ms 384 KB correct
11 Correct 1 ms 384 KB correct
12 Correct 0 ms 384 KB correct
13 Correct 0 ms 384 KB correct
14 Correct 7 ms 384 KB correct
15 Correct 12 ms 384 KB correct
16 Correct 8 ms 384 KB correct
17 Correct 5 ms 384 KB correct
18 Correct 2 ms 384 KB correct
19 Correct 6 ms 384 KB correct
20 Correct 5 ms 384 KB correct
21 Correct 4 ms 384 KB correct
22 Correct 4 ms 384 KB correct
23 Correct 4 ms 384 KB correct
24 Correct 4 ms 384 KB correct
25 Correct 1 ms 384 KB correct
26 Correct 4 ms 384 KB correct
27 Correct 4 ms 384 KB correct
28 Correct 2 ms 384 KB correct
29 Correct 1 ms 384 KB correct
30 Correct 4 ms 384 KB correct
31 Correct 4 ms 384 KB correct
32 Correct 4 ms 384 KB correct
33 Correct 3 ms 384 KB correct
34 Correct 1191 ms 1672 KB correct
35 Correct 980 ms 1656 KB correct
36 Correct 520 ms 1416 KB correct
37 Correct 12 ms 384 KB correct
38 Correct 1216 ms 1660 KB correct
39 Correct 1002 ms 1564 KB correct
40 Correct 629 ms 1656 KB correct
41 Execution timed out 3068 ms 1916 KB Time limit exceeded
42 Halted 0 ms 0 KB -