Submission #628523

#	Time	Username	Problem	Language	Result	Execution time	Memory
628523		c28dnv9q3	Thousands Islands (IOI22_islands)	C++17	5 / 100	104 ms	12740 KiB

islands

#include "islands.h"

#include <variant>
#include <vector>
#include <map>
using namespace std;

variant<bool, vector<int>> find_journey(
    int N, int M, vector<int> U, vector<int> V) {
  map<pair<int,int>, int> m;
  for (int i = 0; i < M; i++)
    m[{U[i], V[i]}] = i;
  if (N < 3)
    return false;
  int c0 = m[{0,1}];
  int c1 = m[{1,0}];
  int c2 = m[{1,2}];
  int c3 = m[{2,1}];
  int c4 = m[{2,0}];
  int c5 = m[{0,2}];
  return vector<int>{
    c0, c2, c4, c5, c3, c1, c4, c2, c0, c1, c3, c5
  };
}

• Subtask 1: 0 / 5
• Subtask 2: 5 / 5
• Subtask 3: 0 / 21
• Subtask 4: 0 / 24
• Subtask 5: 0 / 45