Submission #1182331

#	Time	Username	Problem	Language	Result	Execution time	Memory
1182331		PagodePaiva	Thousands Islands (IOI22_islands)	C++20	1.75 / 100	20 ms	7492 KiB

islands

#include "islands.h"
#include<bits/stdc++.h>
#include <variant>
#include <vector>

using namespace std;

const int N = 100010;
vector <pair <int, int>> g[N];

std::variant<bool, std::vector<int>> find_journey(int N, int M, std::vector<int> U, std::vector<int> V) {
    if(N == 2) return false;
    int a[2], b[2], c[2];
    for(int i = 0;i < M;i++){
        if(U[i] == 0 and V[i] == 1) a[0] = i;
        if(U[i] == 1 and V[i] == 0) a[1] = i;
        if(U[i] == 0 and V[i] == 2) b[0] = i;
        if(U[i] == 2 and V[i] == 0) b[1] = i;
        if(U[i] == 1 and V[i] == 2) c[0] = i;
        if(U[i] == 2 and V[i] == 1) c[1] = i;
        g[U[i]].push_back({V[i], i});
    }
    vector <int> ans = {a[0], b[0], c[0], c[1], b[1], a[1], c[0], b[0], a[0], a[1], b[1], c[1]};
    return ans;
}

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