Submission #629581

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
629581	2022-08-14 16:35:09	abeker	Thousands Islands (IOI22_islands)	C++17	100 / 100	328 ms	33776 KiB

islands

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
#include <bits/stdc++.h>
#include "islands.h"
using namespace std;
typedef pair <vector <int>, vector <int>> pvv;
vector <int> min_rot(vector <int> v) {
  rotate(v.begin(), min_element(v.begin(), v.end()), v.end());
  return v;
}
variant <bool, vector <int>> find_journey(int N, int M, vector <int> u, vector <int> v) {
  queue <int> sinks;
  vector <set <int>> in(N), out(N);
  for (int i = 0; i < M; i++) {
    out[u[i]].insert(i);
    in[v[i]].insert(i);
  }
  auto refresh = [&](int x) {
    if (out[x].empty())
      sinks.push(x);
  };
  for (int i = 0; i < N; i++)
    refresh(i);
  int curr = 0;
  vector <int> sofar;
  while (1) {
    auto remove = [&](int x) {
      for (auto it : in[x]) {
        out[u[it]].erase(it);
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Compilation message (stderr)

islands.cpp: In lambda function:
islands.cpp:58:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   58 |         for (int i = 0; i < path.size(); i++) {
      |                         ~~^~~~~~~~~~~~~
islands.cpp:64:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   64 |         for (int i = 0; i < path.size(); i++)
      |                         ~~^~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 21 / 21
• Subtask 4: 24 / 24
• Subtask 5: 45 / 45