oj.uz

Submission #1065230

# Submission time Handle Problem Language Result Execution time Memory
1065230 2024-08-19T03:57:00 Z KaleemRazaSyed Toy Train (IOI17_train) C++17
100 / 100
 486 ms 1884 KB 
#include<bits/stdc++.h>
 
using namespace std;

const int N = 5000 + 10;
vector<int> G[N], I[N], w, dead, T, A;
int n;

vector<int> Reach(vector<int> &T, int P)
{
  vector<int> reach(n), cnt(n);

  for(int i = 0; i < n; i ++)
    for(int u : G[i])
      cnt[i] += !dead[u];
  
  queue<int> Q;
  for(int i = 0; i < n; i ++)
    if(!dead[i] && T[i])
      Q.push(i), reach[i] = 1;

  while(Q.size())
    {
      int u = Q.front();
      Q.pop();
      for(int v : I[u])
	{
	  if(dead[v]) continue;

	  cnt[v]--;
	  
	  if(A[v] ^ P)
	    {
	      if(!reach[v])
		reach[v] = 1, Q.push(v);
	    }
	  else
	    {   
	      if(cnt[v] == 0 && !reach[v])
		Q.push(v), reach[v] = 1;
	    }
	}
    }
  // cerr << "Reachability computed\n";
  return reach;
}

void buchi()
{
  while(true)
    {
      vector<int> T2 = Reach(T, 0);
      for(int &i : T2) i ^= 1;

      int cnt = 0;
      for(int i = 0; i < n; i ++)
	if(!dead[i])
	  cnt += T2[i];
      
      if(cnt == 0)
	{
	  for(int i = 0; i < n; i ++)
	    w[i] = !dead[i];
	  return;
	}
      
      vector<int> attr2 = Reach(T2, 1);
      
      for(int i = 0; i < n; i ++)
	dead[i] |= attr2[i];
    }
}

vector<int> who_wins(vector<int> a, vector<int> r, vector<int> u, vector<int> v)
{
  A = a;
  n = a.size();
  dead = w = vector<int> (n);
  T = r;
  
  for(int i = 0; i < u.size(); i ++)
    {
      G[u[i]].push_back(v[i]);
      I[v[i]].push_back(u[i]);
    }
  
  buchi();
  return w;
}

Compilation message

train.cpp: In function 'std::vector<int> who_wins(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
train.cpp:81:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   81 |   for(int i = 0; i < u.size(); i ++)
      |                  ~~^~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 1116 KB Output is correct
2 Correct 4 ms 1116 KB Output is correct
3 Correct 4 ms 1112 KB Output is correct
4 Correct 3 ms 1116 KB Output is correct
5 Correct 5 ms 1276 KB Output is correct
6 Correct 3 ms 1116 KB Output is correct
7 Correct 3 ms 1116 KB Output is correct
8 Correct 4 ms 1116 KB Output is correct
9 Correct 3 ms 1116 KB Output is correct
10 Correct 3 ms 1116 KB Output is correct
11 Correct 3 ms 1368 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 604 KB Output is correct
2 Correct 0 ms 604 KB Output is correct
3 Correct 1 ms 604 KB Output is correct
4 Correct 0 ms 604 KB Output is correct
5 Correct 0 ms 604 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 0 ms 628 KB Output is correct
8 Correct 0 ms 604 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 0 ms 604 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 0 ms 604 KB Output is correct
13 Correct 0 ms 604 KB Output is correct
14 Correct 0 ms 604 KB Output is correct
15 Correct 0 ms 600 KB Output is correct
16 Correct 0 ms 604 KB Output is correct
17 Correct 0 ms 600 KB Output is correct
18 Correct 0 ms 600 KB Output is correct
19 Correct 0 ms 604 KB Output is correct
20 Correct 0 ms 604 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 81 ms 1664 KB Output is correct
2 Correct 151 ms 1624 KB Output is correct
3 Correct 215 ms 1624 KB Output is correct
4 Correct 5 ms 1628 KB Output is correct
5 Correct 6 ms 1840 KB Output is correct
6 Correct 6 ms 1628 KB Output is correct
7 Correct 5 ms 1628 KB Output is correct
8 Correct 5 ms 1840 KB Output is correct
9 Correct 5 ms 1624 KB Output is correct
10 Correct 5 ms 1628 KB Output is correct
11 Correct 5 ms 1628 KB Output is correct
12 Correct 5 ms 1536 KB Output is correct
13 Correct 6 ms 1588 KB Output is correct
14 Correct 5 ms 1628 KB Output is correct
15 Correct 5 ms 1776 KB Output is correct
16 Correct 6 ms 1628 KB Output is correct
17 Correct 5 ms 1840 KB Output is correct
18 Correct 238 ms 1460 KB Output is correct

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 1368 KB Output is correct
2 Correct 5 ms 1368 KB Output is correct
3 Correct 5 ms 1628 KB Output is correct
4 Correct 5 ms 1592 KB Output is correct
5 Correct 5 ms 1628 KB Output is correct
6 Correct 5 ms 1372 KB Output is correct
7 Correct 5 ms 1372 KB Output is correct
8 Correct 5 ms 1624 KB Output is correct
9 Correct 5 ms 1368 KB Output is correct
10 Correct 5 ms 1624 KB Output is correct
11 Correct 5 ms 1476 KB Output is correct
12 Correct 5 ms 1628 KB Output is correct
13 Correct 6 ms 1624 KB Output is correct
14 Correct 5 ms 1372 KB Output is correct

Subtask #5
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 1628 KB Output is correct
2 Correct 5 ms 1628 KB Output is correct
3 Correct 5 ms 1636 KB Output is correct
4 Correct 5 ms 1372 KB Output is correct
5 Correct 1 ms 600 KB Output is correct
6 Correct 4 ms 1112 KB Output is correct
7 Correct 3 ms 1116 KB Output is correct
8 Correct 3 ms 1116 KB Output is correct
9 Correct 3 ms 1416 KB Output is correct
10 Correct 1 ms 860 KB Output is correct
11 Correct 3 ms 1116 KB Output is correct

Subtask #6
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 1116 KB Output is correct
2 Correct 4 ms 1116 KB Output is correct
3 Correct 4 ms 1112 KB Output is correct
4 Correct 3 ms 1116 KB Output is correct
5 Correct 5 ms 1276 KB Output is correct
6 Correct 3 ms 1116 KB Output is correct
7 Correct 3 ms 1116 KB Output is correct
8 Correct 4 ms 1116 KB Output is correct
9 Correct 3 ms 1116 KB Output is correct
10 Correct 3 ms 1116 KB Output is correct
11 Correct 3 ms 1368 KB Output is correct
12 Correct 0 ms 604 KB Output is correct
13 Correct 0 ms 604 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 0 ms 604 KB Output is correct
16 Correct 0 ms 604 KB Output is correct
17 Correct 0 ms 604 KB Output is correct
18 Correct 0 ms 628 KB Output is correct
19 Correct 0 ms 604 KB Output is correct
20 Correct 1 ms 604 KB Output is correct
21 Correct 0 ms 604 KB Output is correct
22 Correct 1 ms 604 KB Output is correct
23 Correct 0 ms 604 KB Output is correct
24 Correct 0 ms 604 KB Output is correct
25 Correct 0 ms 604 KB Output is correct
26 Correct 0 ms 600 KB Output is correct
27 Correct 0 ms 604 KB Output is correct
28 Correct 0 ms 600 KB Output is correct
29 Correct 0 ms 600 KB Output is correct
30 Correct 0 ms 604 KB Output is correct
31 Correct 0 ms 604 KB Output is correct
32 Correct 81 ms 1664 KB Output is correct
33 Correct 151 ms 1624 KB Output is correct
34 Correct 215 ms 1624 KB Output is correct
35 Correct 5 ms 1628 KB Output is correct
36 Correct 6 ms 1840 KB Output is correct
37 Correct 6 ms 1628 KB Output is correct
38 Correct 5 ms 1628 KB Output is correct
39 Correct 5 ms 1840 KB Output is correct
40 Correct 5 ms 1624 KB Output is correct
41 Correct 5 ms 1628 KB Output is correct
42 Correct 5 ms 1628 KB Output is correct
43 Correct 5 ms 1536 KB Output is correct
44 Correct 6 ms 1588 KB Output is correct
45 Correct 5 ms 1628 KB Output is correct
46 Correct 5 ms 1776 KB Output is correct
47 Correct 6 ms 1628 KB Output is correct
48 Correct 5 ms 1840 KB Output is correct
49 Correct 238 ms 1460 KB Output is correct
50 Correct 5 ms 1368 KB Output is correct
51 Correct 5 ms 1368 KB Output is correct
52 Correct 5 ms 1628 KB Output is correct
53 Correct 5 ms 1592 KB Output is correct
54 Correct 5 ms 1628 KB Output is correct
55 Correct 5 ms 1372 KB Output is correct
56 Correct 5 ms 1372 KB Output is correct
57 Correct 5 ms 1624 KB Output is correct
58 Correct 5 ms 1368 KB Output is correct
59 Correct 5 ms 1624 KB Output is correct
60 Correct 5 ms 1476 KB Output is correct
61 Correct 5 ms 1628 KB Output is correct
62 Correct 6 ms 1624 KB Output is correct
63 Correct 5 ms 1372 KB Output is correct
64 Correct 6 ms 1628 KB Output is correct
65 Correct 5 ms 1628 KB Output is correct
66 Correct 5 ms 1636 KB Output is correct
67 Correct 5 ms 1372 KB Output is correct
68 Correct 1 ms 600 KB Output is correct
69 Correct 4 ms 1112 KB Output is correct
70 Correct 3 ms 1116 KB Output is correct
71 Correct 3 ms 1116 KB Output is correct
72 Correct 3 ms 1416 KB Output is correct
73 Correct 1 ms 860 KB Output is correct
74 Correct 3 ms 1116 KB Output is correct
75 Correct 108 ms 1628 KB Output is correct
76 Correct 162 ms 1860 KB Output is correct
77 Correct 209 ms 1884 KB Output is correct
78 Correct 206 ms 1852 KB Output is correct
79 Correct 206 ms 1880 KB Output is correct
80 Correct 6 ms 1628 KB Output is correct
81 Correct 5 ms 1848 KB Output is correct
82 Correct 7 ms 1628 KB Output is correct
83 Correct 6 ms 1628 KB Output is correct
84 Correct 6 ms 1628 KB Output is correct
85 Correct 6 ms 1628 KB Output is correct
86 Correct 7 ms 1628 KB Output is correct
87 Correct 6 ms 1588 KB Output is correct
88 Correct 9 ms 1628 KB Output is correct
89 Correct 8 ms 1588 KB Output is correct
90 Correct 12 ms 1628 KB Output is correct
91 Correct 10 ms 1812 KB Output is correct
92 Correct 20 ms 1628 KB Output is correct
93 Correct 19 ms 1628 KB Output is correct
94 Correct 20 ms 1840 KB Output is correct
95 Correct 21 ms 1628 KB Output is correct
96 Correct 60 ms 1628 KB Output is correct
97 Correct 276 ms 1824 KB Output is correct
98 Correct 438 ms 1628 KB Output is correct
99 Correct 486 ms 1628 KB Output is correct
100 Correct 242 ms 1372 KB Output is correct