oj.uz

Submission #740061

# Submission time Handle Problem Language Result Execution time Memory
740061 2023-05-12T04:01:53 Z abczz Connecting Supertrees (IOI20_supertrees) C++17
40 / 100
 242 ms 26224 KB 
#include "supertrees.h"
#include <iostream>
#include <vector>
#include <array>
#define ll int

using namespace std;

vector <ll> X[1000];
vector <ll> Z, Y, W;
vector<array<ll, 2>> V[3];
vector<vector<int>> F;
vector <int> tmp;
bool B[1000], D[1000], E[1000];
ll n, a, b, z, P[1000], G[1000];
ll dsu(ll u) {
	if (P[u] == u) return u;
	else return P[u] = dsu(P[u]);
}
int construct(std::vector<std::vector<int>> p) {
	n = p.size();
	for (int i=0; i<n; ++i) P[i] = i;
	for (int i=0; i<n; ++i) {
		F.push_back(tmp);
		for (int j=0; j<n; ++j) {
			F[i].push_back(0);
			if (p[i][j] == 3) return 0;
			if (p[i][j]) {
				a = dsu(i), b = dsu(j);
				if (a != b) P[a] = b;
			}
      if (j > i) V[p[i][j]].push_back({i, j});
		}
	}
	for (auto [u, v] : V[0]) {
		a = dsu(u), b = dsu(v);
		if (a == b) return 0;
	}
  for (int i=0; i<n; ++i) {
    a = dsu(i);
    G[i] = a;
  }
	for (int i=0; i<n; ++i) P[i] = i;
	for (auto [u, v] : V[1]) {
		a = dsu(u), b = dsu(v);
		if (a != b) {
			P[a] = b;
			B[u] = B[v] = true;
			F[u][v] = F[v][u] = 1;
		}
	}
  for (auto [u, v] : V[2]) {
    E[u] = E[v] = 1;
    a = dsu(u), b = dsu(v);
    if (B[u]) X[u].push_back(v);
    if (B[v]) X[v].push_back(u);
    if (a == b) return 0;
  }
  for (int i=0; i<n; ++i) {
    if (B[i] && X[i].size() == 1) return 0;
  }
	for (int i=0; i<n; ++i) {
    if (B[i] && X[i].size()) {
      /*cout << i << " " << X[i].size() << endl;
      for (auto u : X[i]) {
        cout << u << " ";
      }
      cout << endl;*/
      D[i] = true;
      a = dsu(i), b = dsu(X[i][0]);
      if (a != b) {
        P[a] = b;
        F[i][X[i][0]] = F[X[i][0]][i] = 1;
      }
      z = -1;
      for (int j=0; j+1<X[i].size(); ++j) {
        a = dsu(X[i][j]), b = dsu(X[i][j+1]);
        D[X[i][j]] = true;
        if (a != b) {
          z = X[i][j+1];
          P[a] = b;
          F[X[i][j]][X[i][j+1]] = F[X[i][j+1]][X[i][j]] = 1;
        }
      }
      D[X[i].back()] = true;
      if (z != -1) F[i][z] = F[z][i] = 1;
    }
  }
  for (int i=0; i<n; ++i) {
    if (!B[i] && !D[i] && E[i]) {
      Z.push_back(i);
    }
  }
  while (Z.size()) {
    Y.clear();
    W.clear();
    if (Z.size() <= 2) return 0;
    Y.push_back(Z[0]);
    for (int i=1; i<Z.size(); ++i) {
      if (G[Z[0]] == G[Z[i]]) Y.push_back(Z[i]);
      else W.push_back(Z[i]);
    }
    if (Y.size() <= 2) return 0;
    for (int i=0; i+1<Y.size(); ++i) {
      F[Y[i]][Y[i+1]] = F[Y[i+1]][Y[i]] = 1;
    }
    F[Y[0]][Y.back()] = F[Y.back()][Y[0]] = 1;
    swap(Z, W);
  }
	build(F);
	return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:76:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   76 |       for (int j=0; j+1<X[i].size(); ++j) {
      |                     ~~~^~~~~~~~~~~~
supertrees.cpp:99:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   99 |     for (int i=1; i<Z.size(); ++i) {
      |                   ~^~~~~~~~~
supertrees.cpp:104:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  104 |     for (int i=0; i+1<Y.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 0 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 8 ms 1400 KB Output is correct
7 Correct 194 ms 26196 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 0 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 8 ms 1400 KB Output is correct
7 Correct 194 ms 26196 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 9 ms 1416 KB Output is correct
13 Correct 242 ms 26136 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 4 ms 980 KB Output is correct
17 Correct 99 ms 16132 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 48 ms 6784 KB Output is correct
21 Correct 207 ms 26096 KB Output is correct
22 Correct 194 ms 26076 KB Output is correct
23 Correct 215 ms 26128 KB Output is correct
24 Correct 236 ms 26084 KB Output is correct
25 Correct 85 ms 16236 KB Output is correct
26 Correct 86 ms 16128 KB Output is correct
27 Correct 196 ms 26076 KB Output is correct
28 Correct 201 ms 26136 KB Output is correct

Subtask #3
19.0 / 19.0

# 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 1 ms 212 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 8 ms 1356 KB Output is correct
9 Correct 187 ms 26104 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 9 ms 1356 KB Output is correct
13 Correct 184 ms 26060 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 4 ms 980 KB Output is correct
17 Correct 97 ms 16096 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 48 ms 6720 KB Output is correct
22 Correct 190 ms 26092 KB Output is correct
23 Correct 209 ms 26140 KB Output is correct
24 Correct 215 ms 26036 KB Output is correct
25 Correct 92 ms 16128 KB Output is correct
26 Correct 94 ms 16232 KB Output is correct
27 Correct 187 ms 26060 KB Output is correct
28 Correct 198 ms 26120 KB Output is correct
29 Correct 105 ms 16212 KB Output is correct

Subtask #4
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 52 ms 6716 KB Output is correct
5 Correct 207 ms 26208 KB Output is correct
6 Correct 191 ms 26224 KB Output is correct
7 Correct 194 ms 26124 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 49 ms 6808 KB Output is correct
10 Correct 189 ms 26120 KB Output is correct
11 Correct 189 ms 26104 KB Output is correct
12 Correct 193 ms 26136 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Incorrect 51 ms 7232 KB Too many ways to get from 24 to 407, should be 1 found no less than 2
17 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# 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 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 8 ms 1400 KB Output is correct
7 Correct 194 ms 26196 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 9 ms 1416 KB Output is correct
13 Correct 242 ms 26136 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 4 ms 980 KB Output is correct
17 Correct 99 ms 16132 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 48 ms 6784 KB Output is correct
21 Correct 207 ms 26096 KB Output is correct
22 Correct 194 ms 26076 KB Output is correct
23 Correct 215 ms 26128 KB Output is correct
24 Correct 236 ms 26084 KB Output is correct
25 Correct 85 ms 16236 KB Output is correct
26 Correct 86 ms 16128 KB Output is correct
27 Correct 196 ms 26076 KB Output is correct
28 Correct 201 ms 26136 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 1 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 1 ms 212 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 0 ms 340 KB Output is correct
36 Correct 8 ms 1356 KB Output is correct
37 Correct 187 ms 26104 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 1 ms 340 KB Output is correct
40 Correct 9 ms 1356 KB Output is correct
41 Correct 184 ms 26060 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Correct 0 ms 212 KB Output is correct
44 Correct 4 ms 980 KB Output is correct
45 Correct 97 ms 16096 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 1 ms 212 KB Output is correct
48 Correct 1 ms 340 KB Output is correct
49 Correct 48 ms 6720 KB Output is correct
50 Correct 190 ms 26092 KB Output is correct
51 Correct 209 ms 26140 KB Output is correct
52 Correct 215 ms 26036 KB Output is correct
53 Correct 92 ms 16128 KB Output is correct
54 Correct 94 ms 16232 KB Output is correct
55 Correct 187 ms 26060 KB Output is correct
56 Correct 198 ms 26120 KB Output is correct
57 Correct 105 ms 16212 KB Output is correct
58 Correct 0 ms 340 KB Output is correct
59 Correct 1 ms 212 KB Output is correct
60 Correct 4 ms 980 KB Output is correct
61 Correct 96 ms 16236 KB Output is correct
62 Correct 0 ms 212 KB Output is correct
63 Correct 0 ms 212 KB Output is correct
64 Correct 1 ms 212 KB Output is correct
65 Incorrect 49 ms 6716 KB Too many ways to get from 11 to 175, should be 1 found no less than 2
66 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 0 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 8 ms 1400 KB Output is correct
7 Correct 194 ms 26196 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 9 ms 1416 KB Output is correct
13 Correct 242 ms 26136 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 4 ms 980 KB Output is correct
17 Correct 99 ms 16132 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 48 ms 6784 KB Output is correct
21 Correct 207 ms 26096 KB Output is correct
22 Correct 194 ms 26076 KB Output is correct
23 Correct 215 ms 26128 KB Output is correct
24 Correct 236 ms 26084 KB Output is correct
25 Correct 85 ms 16236 KB Output is correct
26 Correct 86 ms 16128 KB Output is correct
27 Correct 196 ms 26076 KB Output is correct
28 Correct 201 ms 26136 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 1 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 1 ms 212 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 0 ms 340 KB Output is correct
36 Correct 8 ms 1356 KB Output is correct
37 Correct 187 ms 26104 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 1 ms 340 KB Output is correct
40 Correct 9 ms 1356 KB Output is correct
41 Correct 184 ms 26060 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Correct 0 ms 212 KB Output is correct
44 Correct 4 ms 980 KB Output is correct
45 Correct 97 ms 16096 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 1 ms 212 KB Output is correct
48 Correct 1 ms 340 KB Output is correct
49 Correct 48 ms 6720 KB Output is correct
50 Correct 190 ms 26092 KB Output is correct
51 Correct 209 ms 26140 KB Output is correct
52 Correct 215 ms 26036 KB Output is correct
53 Correct 92 ms 16128 KB Output is correct
54 Correct 94 ms 16232 KB Output is correct
55 Correct 187 ms 26060 KB Output is correct
56 Correct 198 ms 26120 KB Output is correct
57 Correct 105 ms 16212 KB Output is correct
58 Correct 0 ms 340 KB Output is correct
59 Correct 0 ms 212 KB Output is correct
60 Correct 0 ms 340 KB Output is correct
61 Correct 52 ms 6716 KB Output is correct
62 Correct 207 ms 26208 KB Output is correct
63 Correct 191 ms 26224 KB Output is correct
64 Correct 194 ms 26124 KB Output is correct
65 Correct 0 ms 212 KB Output is correct
66 Correct 49 ms 6808 KB Output is correct
67 Correct 189 ms 26120 KB Output is correct
68 Correct 189 ms 26104 KB Output is correct
69 Correct 193 ms 26136 KB Output is correct
70 Correct 1 ms 212 KB Output is correct
71 Correct 1 ms 340 KB Output is correct
72 Correct 0 ms 212 KB Output is correct
73 Incorrect 51 ms 7232 KB Too many ways to get from 24 to 407, should be 1 found no less than 2
74 Halted 0 ms 0 KB -