Submission #1149588

#	Time	Username	Problem	Language	Result	Execution time	Memory
1149588		byunjaewoo	Thousands Islands (IOI22_islands)	C++20	0 / 100	17 ms	3144 KiB

islands

#include "islands.h"
#include <bits/stdc++.h>
using namespace std;

variant<bool, vector<int>> find_journey(int N, int M, vector<int> U, vector<int> V) {
  int a=-1, b=-1, c=-1, d=-1;
  for(int i=0; i<M; i+=2) {
    if(U[i]==0) {
      if(a<0) a=i, c=i+1;
      else if(b<0) b=i, d=i+1;
    }
    if(V[i]==0) {
      if(a<0) a=i+1, c=i;
      else if(b<0) b=i+1, d=i;
    }
  }
  if(b<0) return false;
  vector<int> ret;
  ret.push_back(a), ret.push_back(c), ret.push_back(b), ret.push_back(d);
  ret.push_back(c), ret.push_back(a), ret.push_back(d), ret.push_back(b);
  return ret;
}

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