Submission #1037604

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1037604	2024-07-29 05:45:28	12345678	Thousands Islands (IOI22_islands)	C++17	24 / 100	73 ms	4940 KiB

islands

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#include "islands.h"
#include <bits/stdc++.h>
using namespace std;
const int nx=1e3+5;
int ans, vs[nx];
vector<pair<int, int>> d[nx];
vector<int> l, res;
pair<int, int> pa[nx], pa2[nx];
void dfs(int u)
{
    vs[u]=1;
    l.push_back(u);
    for (auto [v, idx]:d[u]) if (!vs[v]) pa[v]={u, idx}, dfs(v);
}
void dfs2(int u, int rt)
{
    vs[u]=1;
    for (auto [v, idx]:d[u]) 
    {
        if (!ans&&v==rt)
        {
            vector<int> tmp, path;
            int cur=rt;
            while (cur!=0) tmp.push_back(pa[cur].second), cur=pa[cur].first;
            reverse(tmp.begin(), tmp.end());
 
 
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• Subtask 1: 0 / 5
• Subtask 2: 0 / 5
• Subtask 3: 0 / 21
• Subtask 4: 24 / 24
• Subtask 5: 0 / 45