Submission #1037699

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1037699	2024-07-29 06:59:46	thinknoexit	Thousands Islands (IOI22_islands)	C++17	0 / 100	21 ms	8540 KiB

islands

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#include "islands.h"
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const int N = 1010;
vector<int> adj[N];
vector<int> cycle, path;
bool c[N], reach[N], vis[N];
int boat[N][N], bp, ava, n;
void dfs_sz(int v) {
    reach[v] = 1;
    for (auto& x : adj[v]) {
        if (!reach[x]) dfs_sz(x);
    }
}
bool dfs(int v, int p = -1) {
    if (vis[v]) {
        bp = v, ava = 1;
        return true;
    }
    vis[v] = 1;
    for (auto& x : adj[v]) {
        if (x == p) continue;
        if (dfs(x, v)) {
            if (ava) cycle.push_back(v), c[v] = 1;
            if (v == bp) ava = 0;
            return true;
        }
    }
    return false;
 
 
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• Subtask 5: 0 / 45