Submission #832889

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
832889	2023-08-21 16:18:28	Username4132	Thousands Islands (IOI22_islands)	C++17	17.50 / 100	1087 ms	8696 KiB

islands

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#include "islands.h"
#include <variant>
#include<iostream>
#include <vector>
using namespace std;
using pii = pair<int, int>;
#define forn(i, n) for(int i=0; i<(int)n; ++i)
#define PB push_back
const int MAXN = 100010;
int n, m;
bool marked[MAXN], inst[MAXN], vis[MAXN];
vector<int> g[MAXN];
vector<int> st;
bool dfs1(int v){
  vis[v]=inst[v]=true;
  st.PB(v);
  bool ret=false;
  for(int to:g[v]) if(!marked[to] && !vis[to]){
    ret|=dfs1(to);
  }
  else if(inst[to]){
    ret=true;
  }
  st.pop_back();
  inst[v]=false;
  return ret;
}
 
 
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• Subtask 1: 0 / 5
• Subtask 2: 1.75 / 5
• Subtask 3: 7.35 / 21
• Subtask 4: 8.399999999999999 / 24
• Subtask 5: 0 / 45