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Submission #939765

# Submission time Handle Problem Language Result Execution time Memory
939765 2024-03-06T17:45:59 Z Trisanu_Das Thousands Islands (IOI22_islands) C++17
35 / 100
 163 ms 38196 KB 
#include "islands.h"
 
#include <bits/stdc++.h>
 
using namespace std;
 
using idata = vector<int>;
using igrid = vector<idata>;
using graph = vector<vector<pair<pair<int, bool>, int>>>;
using bdata = vector<bool>;
using bgrid = vector<bdata>;
 
graph roads;
 
bgrid visited;
bgrid visiting;
bdata used;
idata path;
 
bool dfs (int node, int type, int last) {
  if (visited[node][type] && !visiting[node][type]) return false;
  if (visiting[node][type]) {
    if (type == 1) return true;
    type ++;
    if (visited[node][type]) return false;
  }
 
  visiting[node][type] = true;
  visited [node][type] = true;
 
  for (const auto &road : roads[node]) {
    int id   = road.first.first;
    int next = road.second;
    if (used[id] != road.first.second || last == id) continue ;
 
    used[id] = !road.first.second;
    if (dfs(next, type, id))
      return true;
    used[id] = road.first.second;
  }
 
  visiting[node][type] = false;
  return false;
}
 
std::variant<bool, idata> find_journey(
    int N, int M, idata U, idata V) {
  roads.resize(N);
  visited.resize(N, bdata(2)); visiting.resize(N, bdata(2));
  used.resize(M);
  bool st3 = M % 2 == 0;
  for (int i = 0; i < M; i ++) {
    roads[U[i]].push_back({ {i, false}, V[i] });
    roads[V[i]].push_back({ {i, true }, U[i] });
  }
  
  if (!dfs(0, 0, -1)) return false;
 
  return true;
}

Compilation message

islands.cpp: In function 'std::variant<bool, std::vector<int, std::allocator<int> > > find_journey(int, int, idata, idata)':
islands.cpp:51:8: warning: unused variable 'st3' [-Wunused-variable]
   51 |   bool st3 = M % 2 == 0;
      |        ^~~

Subtask #1
1.75 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Partially correct 0 ms 348 KB Output is partially correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Partially correct 1 ms 588 KB Output is partially correct
7 Partially correct 31 ms 9780 KB Output is partially correct

Subtask #2
1.75 / 5.0

# Verdict Execution time Memory Grader output
1 Partially correct 1 ms 348 KB Output is partially correct
2 Correct 1 ms 348 KB Output is correct
3 Partially correct 1 ms 348 KB Output is partially correct
4 Partially correct 1 ms 348 KB Output is partially correct
5 Partially correct 1 ms 348 KB Output is partially correct
6 Partially correct 28 ms 9300 KB Output is partially correct

Subtask #3
7.35 / 21.0

# Verdict Execution time Memory Grader output
1 Partially correct 1 ms 604 KB Output is partially correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 376 KB Output is correct
4 Partially correct 0 ms 348 KB Output is partially correct
5 Correct 1 ms 604 KB Output is correct
6 Partially correct 1 ms 348 KB Output is partially correct
7 Correct 1 ms 440 KB Output is correct
8 Partially correct 1 ms 348 KB Output is partially correct
9 Partially correct 0 ms 348 KB Output is partially correct
10 Partially correct 1 ms 604 KB Output is partially correct
11 Partially correct 0 ms 348 KB Output is partially correct
12 Partially correct 1 ms 604 KB Output is partially correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Partially correct 0 ms 436 KB Output is partially correct
16 Correct 1 ms 344 KB Output is correct
17 Partially correct 20 ms 6228 KB Output is partially correct
18 Partially correct 14 ms 5724 KB Output is partially correct
19 Correct 0 ms 348 KB Output is correct
20 Partially correct 0 ms 348 KB Output is partially correct
21 Partially correct 1 ms 348 KB Output is partially correct
22 Partially correct 1 ms 436 KB Output is partially correct
23 Partially correct 29 ms 9488 KB Output is partially correct

Subtask #4
8.4 / 24.0

# Verdict Execution time Memory Grader output
1 Partially correct 0 ms 348 KB Output is partially correct
2 Partially correct 1 ms 604 KB Output is partially correct
3 Partially correct 41 ms 9812 KB Output is partially correct
4 Partially correct 33 ms 11024 KB Output is partially correct
5 Partially correct 1 ms 744 KB Output is partially correct
6 Partially correct 1 ms 600 KB Output is partially correct
7 Partially correct 1 ms 348 KB Output is partially correct
8 Partially correct 0 ms 348 KB Output is partially correct
9 Partially correct 0 ms 348 KB Output is partially correct
10 Partially correct 1 ms 604 KB Output is partially correct
11 Correct 1 ms 860 KB Output is correct
12 Partially correct 1 ms 860 KB Output is partially correct
13 Partially correct 2 ms 860 KB Output is partially correct
14 Partially correct 1 ms 856 KB Output is partially correct
15 Partially correct 2 ms 956 KB Output is partially correct
16 Partially correct 1 ms 604 KB Output is partially correct
17 Correct 0 ms 348 KB Output is correct
18 Partially correct 1 ms 604 KB Output is partially correct
19 Partially correct 1 ms 604 KB Output is partially correct
20 Correct 40 ms 11256 KB Output is correct
21 Partially correct 34 ms 11276 KB Output is partially correct
22 Correct 1 ms 604 KB Output is correct
23 Correct 1 ms 604 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Partially correct 1 ms 348 KB Output is partially correct
26 Partially correct 1 ms 604 KB Output is partially correct
27 Partially correct 33 ms 10640 KB Output is partially correct
28 Partially correct 34 ms 10756 KB Output is partially correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 39 ms 11340 KB Output is correct
31 Partially correct 0 ms 348 KB Output is partially correct
32 Partially correct 33 ms 11844 KB Output is partially correct
33 Partially correct 43 ms 9552 KB Output is partially correct
34 Partially correct 23 ms 6060 KB Output is partially correct
35 Partially correct 1 ms 604 KB Output is partially correct
36 Partially correct 28 ms 9932 KB Output is partially correct
37 Partially correct 33 ms 11056 KB Output is partially correct
38 Correct 1 ms 604 KB Output is correct
39 Correct 40 ms 10464 KB Output is correct
40 Partially correct 1 ms 604 KB Output is partially correct
41 Correct 36 ms 11208 KB Output is correct
42 Partially correct 32 ms 10616 KB Output is partially correct
43 Correct 0 ms 344 KB Output is correct
44 Correct 2 ms 792 KB Output is correct
45 Partially correct 1 ms 604 KB Output is partially correct
46 Partially correct 14 ms 5468 KB Output is partially correct

Subtask #5
15.75 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Partially correct 0 ms 348 KB Output is partially correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Partially correct 1 ms 588 KB Output is partially correct
7 Partially correct 31 ms 9780 KB Output is partially correct
8 Partially correct 1 ms 348 KB Output is partially correct
9 Correct 1 ms 348 KB Output is correct
10 Partially correct 1 ms 348 KB Output is partially correct
11 Partially correct 1 ms 348 KB Output is partially correct
12 Partially correct 1 ms 348 KB Output is partially correct
13 Partially correct 28 ms 9300 KB Output is partially correct
14 Partially correct 1 ms 604 KB Output is partially correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 376 KB Output is correct
17 Partially correct 0 ms 348 KB Output is partially correct
18 Correct 1 ms 604 KB Output is correct
19 Partially correct 1 ms 348 KB Output is partially correct
20 Correct 1 ms 440 KB Output is correct
21 Partially correct 1 ms 348 KB Output is partially correct
22 Partially correct 0 ms 348 KB Output is partially correct
23 Partially correct 1 ms 604 KB Output is partially correct
24 Partially correct 0 ms 348 KB Output is partially correct
25 Partially correct 1 ms 604 KB Output is partially correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Partially correct 0 ms 436 KB Output is partially correct
29 Correct 1 ms 344 KB Output is correct
30 Partially correct 20 ms 6228 KB Output is partially correct
31 Partially correct 14 ms 5724 KB Output is partially correct
32 Correct 0 ms 348 KB Output is correct
33 Partially correct 0 ms 348 KB Output is partially correct
34 Partially correct 1 ms 348 KB Output is partially correct
35 Partially correct 1 ms 436 KB Output is partially correct
36 Partially correct 29 ms 9488 KB Output is partially correct
37 Partially correct 1 ms 348 KB Output is partially correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 1 ms 500 KB Output is correct
40 Correct 1 ms 344 KB Output is correct
41 Correct 16 ms 5268 KB Output is correct
42 Correct 3 ms 860 KB Output is correct
43 Correct 66 ms 19432 KB Output is correct
44 Correct 75 ms 17616 KB Output is correct
45 Partially correct 52 ms 19444 KB Output is partially correct
46 Partially correct 1 ms 348 KB Output is partially correct
47 Partially correct 1 ms 348 KB Output is partially correct
48 Partially correct 0 ms 348 KB Output is partially correct
49 Partially correct 1 ms 600 KB Output is partially correct
50 Partially correct 66 ms 36728 KB Output is partially correct
51 Correct 91 ms 35452 KB Output is correct
52 Correct 163 ms 36612 KB Output is correct
53 Partially correct 126 ms 38196 KB Output is partially correct
54 Correct 115 ms 35076 KB Output is correct
55 Correct 134 ms 36356 KB Output is correct
56 Partially correct 162 ms 35848 KB Output is partially correct
57 Partially correct 52 ms 22908 KB Output is partially correct
58 Partially correct 66 ms 33484 KB Output is partially correct
59 Correct 91 ms 30116 KB Output is correct
60 Correct 95 ms 30372 KB Output is correct
61 Correct 66 ms 30284 KB Output is correct
62 Correct 16 ms 10068 KB Output is correct
63 Correct 61 ms 29568 KB Output is correct
64 Partially correct 29 ms 7004 KB Output is partially correct
65 Partially correct 0 ms 348 KB Output is partially correct
66 Partially correct 1 ms 348 KB Output is partially correct
67 Partially correct 67 ms 30392 KB Output is partially correct
68 Correct 36 ms 11856 KB Output is correct
69 Correct 53 ms 26248 KB Output is correct
70 Partially correct 1 ms 856 KB Output is partially correct
71 Correct 55 ms 18512 KB Output is correct
72 Partially correct 0 ms 344 KB Output is partially correct
73 Correct 81 ms 25204 KB Output is correct
74 Partially correct 83 ms 34896 KB Output is partially correct
75 Partially correct 5 ms 1368 KB Output is partially correct
76 Partially correct 42 ms 18380 KB Output is partially correct
77 Correct 70 ms 32340 KB Output is correct
78 Correct 70 ms 30548 KB Output is correct
79 Partially correct 1 ms 348 KB Output is partially correct
80 Partially correct 102 ms 36676 KB Output is partially correct
81 Partially correct 1 ms 604 KB Output is partially correct
82 Correct 33 ms 9524 KB Output is correct
83 Partially correct 2 ms 600 KB Output is partially correct
84 Partially correct 1 ms 348 KB Output is partially correct
85 Partially correct 37 ms 16208 KB Output is partially correct
86 Partially correct 1 ms 856 KB Output is partially correct
87 Correct 9 ms 13404 KB Output is correct
88 Partially correct 2 ms 1112 KB Output is partially correct
89 Correct 69 ms 30520 KB Output is correct
90 Correct 75 ms 30288 KB Output is correct
91 Partially correct 103 ms 36764 KB Output is partially correct
92 Partially correct 0 ms 348 KB Output is partially correct