Submission #1247529

#	Time	Username	Problem	Language	Result	Execution time	Memory
1247529		m5588ohammed	Thousands Islands (IOI22_islands)	C++20	1.75 / 100	19 ms	8892 KiB

islands

#include "islands.h"
#include <bits/stdc++.h>
using namespace std;
int n,m;
vector <int> v[200001];
std::variant<bool, std::vector<int>> find_journey(int N, int M, std::vector<int> U, std::vector<int> V) {
	n=N,m=M;
	if(n==2){
		vector <int> a,b;
		for(int i=0;i<m;i++){
			if(U[i]==0) a.push_back(i);
			else b.push_back(i);
		}
		if(a.size()>=2&&b.size()>=2) return vector <int> ({a[0],b[0],a[1],b[1],b[0],a[0],b[1],a[1]});
		else return false;
	}
}

Compilation message (stderr)

islands.cpp: In function 'std::variant<bool, std::vector<int, std::allocator<int> > > find_journey(int, int, std::vector<int>, std::vector<int>)':
islands.cpp:17:1: warning: control reaches end of non-void function [-Wreturn-type]
   17 | }
      | ^

• Subtask 1: 0 / 5
• Subtask 2: 1.75 / 5
• Subtask 3: 0 / 21
• Subtask 4: 0 / 24
• Subtask 5: 0 / 45