Submission #706645

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
706645	2023-03-07 09:06:19	danikoynov	Thousands Islands (IOI22_islands)	C++17	100 / 100	167 ms	29964 KiB

islands

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#include "islands.h"
#include <variant>
#include <vector>
#include <queue>
#include <iostream>
using namespace std;
const int maxn = 1e5 + 10;
int seen[maxn], in_deg[maxn], out_deg[maxn];
int n, m;
vector < int > links[maxn], rev_links[maxn];
vector < pair < int, int > > graph[maxn];
vector < int > path[3], cycle[3];
int dfs(int node, int id, int root)
{
    if (seen[node] != 0)
        return node;
    ///cout << node << " : " << id << " : " << root << endl;
    seen[node] = 1;
    for (pair < int, int > dest : graph[node])
    {
        if (seen[dest.first] >= 0)
        {
            path[id].push_back(dest.second);
            int up = dfs(dest.first, id, root);
            if (id == 0)
            {
                if (up >= 0)
 
 
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Compilation message (stderr)

islands.cpp: In function 'void append_to_end(std::vector<int>&, std::vector<int>&, int)':
islands.cpp:127:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  127 |         for (int i = 0; i < to_add.size(); i ++)
      |                         ~~^~~~~~~~~~~~~~~
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:174:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  174 |         for (int i = idx; i < cycle[0].size(); i ++)
      |                           ~~^~~~~~~~~~~~~~~~~

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