Submission #628315

#	Time	Username	Problem	Language	Result	Execution time	Memory
628315		MarkBcc168	Thousands Islands (IOI22_islands)	C++17	10 / 100	33 ms	6076 KiB

islands

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

std::variant<bool, std::vector<int>> find_journey(
    int n, int m, std::vector<int> u, std::vector<int> v){
    assert(n<=400);
    if(n==2){
        vector<int> a, b;
        for(int i=0;i<m;++i){
            if(u[i]==0) a.push_back(i);
            if(u[i]==1) b.push_back(i);
        }
        if(a.size() < 2 || b.size() < 1) return false;
        else return vector<int>{a[0], b[0], a[1], a[0], b[0], a[1]};
    }
    else{
        int e[n][n];
        for(int i=0; i<m; ++i){
            e[u[i]][v[i]] = i;
        }
        return  vector<int>{e[0][1], e[1][2], e[2][0],
                    e[0][2], e[2][1], e[1][0],
                    e[2][0], e[1][2], e[0][1],
                    e[1][0], e[2][1], e[0][2]};
    }
}

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