Submission #1058508

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1058508	2024-08-14 10:23:51	mychecksedad	Thousands Islands (IOI22_islands)	C++17	30.75 / 100	77 ms	25036 KiB

islands

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#include "islands.h"
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define en cout << '\n'
#define all(x) x.begin(),x.end()
#define pii pair<int,int>
#define vi vector<int>
#define ff first
#define ss second
const int N = 1e5+10;
int n, m;
vector<pair<int, int>> g[N];
vector<int> euler, cyc;
vector<bool> good, in_euler(N);
bool is_cyc = 0;
map<pii, vi> A;
vector<int> S;
bool second_case = 0;
bool dfs(int v, int par, vector<bool> &vis){
  vis[v] = 1;
  euler.pb(v);
  in_euler[v] = 1;
  // cout << v << ' ';
  for(auto U: g[v]){
    int u = U.ss;
    if(vis[u] && u != par && in_euler[u]){
      // cout << v << ' ' << u << endl;
      euler.pb(u);
 
 
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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:91:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   91 |     for(int i = 0; i + 1 < euler.size(); ++i){
      |                    ~~~~~~^~~~~~~~~~~~~~
islands.cpp:99:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   99 |     for(int i = 0; i + 1 < euler.size(); ++i){
      |                    ~~~~~~^~~~~~~~~~~~~~
islands.cpp:106:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  106 |   for(int i = 0; i + 1 < euler.size(); ++i){
      |                  ~~~~~~^~~~~~~~~~~~~~
islands.cpp:120:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  120 |   for(int i = 0; i + 2 < cyc.size(); ++i){
      |                  ~~~~~~^~~~~~~~~~~~
islands.cpp:146:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  146 |   for(int i = 0; i + 1 < euler.size(); ++i){
      |                  ~~~~~~^~~~~~~~~~~~~~

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