#include <iostream>
#include <vector>
using namespace std;
// Globális változók a memória miatt (gyorsabb)
vector<int> t;
vector<int> eredmeny;
vector<int> path;
vector<int> path_idx;
int main()
{
ios::sync_with_stdio(0);
cin.tie(0);
int n;
cin >> n;
t.resize(n);
for(int i = 0; i < n; i++)
{
cin >> t[i];
t[i]--;
}
eredmeny.assign(n, 0);
path_idx.assign(n, -1);
path.reserve(n);
int leghosszabb_ut = 0;
int legjobb_kezdes = 0;
for(int i = 0; i < n; i++)
{
if (eredmeny[i] != 0) continue;
int jelenlegi = i;
path.clear();
while (true)
{
if (eredmeny[jelenlegi] != 0)
{
int hossz = eredmeny[jelenlegi];
for (int j = path.size() - 1; j >= 0; j--)
{
hossz++;
eredmeny[path[j]] = hossz;
path_idx[path[j]] = -1;
}
break;
}
if (path_idx[jelenlegi] != -1)
{
int kor_start = path_idx[jelenlegi];
int kor_merete = path.size() - kor_start;
for (int j = kor_start; j < path.size(); j++)
{
eredmeny[path[j]] = kor_merete;
path_idx[path[j]] = -1;
}
int aktualis_hossz = kor_merete;
for (int j = kor_start - 1; j >= 0; j--)
{
aktualis_hossz++;
eredmeny[path[j]] = aktualis_hossz;
path_idx[path[j]] = -1;
}
break;
}
path_idx[jelenlegi] = path.size();
path.push_back(jelenlegi);
jelenlegi = t[jelenlegi];
}
}
for(int i = 0; i < n; i++)
{
if (eredmeny[i] > leghosszabb_ut)
{
leghosszabb_ut = eredmeny[i];
legjobb_kezdes = i + 1;
}
}
cout << legjobb_kezdes << " " << leghosszabb_ut;
return 0;
}
| Subtask | Sum | Test | Verdict | Time | Memory | ||
|---|---|---|---|---|---|---|---|
| subtask1 | 0/0 | ||||||
| 1 | Accepted | 1ms | 316 KiB | ||||
| subtask2 | 20/20 | ||||||
| 2 | Accepted | 2ms | 316 KiB | ||||
| 3 | Accepted | 1ms | 316 KiB | ||||
| 4 | Accepted | 2ms | 316 KiB | ||||
| 5 | Accepted | 2ms | 316 KiB | ||||
| 6 | Accepted | 1ms | 316 KiB | ||||
| 7 | Accepted | 1ms | 316 KiB | ||||
| 8 | Accepted | 1ms | 316 KiB | ||||
| 9 | Accepted | 2ms | 316 KiB | ||||
| 10 | Accepted | 1ms | 316 KiB | ||||
| 11 | Accepted | 1ms | 512 KiB | ||||
| 12 | Accepted | 2ms | 508 KiB | ||||
| subtask3 | 18/18 | ||||||
| 13 | Accepted | 35ms | 2612 KiB | ||||
| 14 | Accepted | 34ms | 2760 KiB | ||||
| 15 | Accepted | 37ms | 2612 KiB | ||||
| 16 | Accepted | 35ms | 2804 KiB | ||||
| 17 | Accepted | 35ms | 2888 KiB | ||||
| 18 | Accepted | 37ms | 2864 KiB | ||||
| 19 | Accepted | 35ms | 2868 KiB | ||||
| 20 | Accepted | 35ms | 2868 KiB | ||||
| 21 | Accepted | 35ms | 3276 KiB | ||||
| 22 | Accepted | 37ms | 3460 KiB | ||||
| subtask4 | 42/42 | ||||||
| 23 | Accepted | 1ms | 500 KiB | ||||
| 24 | Accepted | 2ms | 316 KiB | ||||
| 25 | Accepted | 1ms | 316 KiB | ||||
| 26 | Accepted | 2ms | 316 KiB | ||||
| 27 | Accepted | 2ms | 316 KiB | ||||
| 28 | Accepted | 1ms | 316 KiB | ||||
| 29 | Accepted | 1ms | 316 KiB | ||||
| 30 | Accepted | 1ms | 316 KiB | ||||
| 31 | Accepted | 2ms | 316 KiB | ||||
| 32 | Accepted | 1ms | 316 KiB | ||||
| 33 | Accepted | 1ms | 512 KiB | ||||
| 34 | Accepted | 2ms | 508 KiB | ||||
| 35 | Accepted | 35ms | 2612 KiB | ||||
| 36 | Accepted | 34ms | 2760 KiB | ||||
| 37 | Accepted | 37ms | 2612 KiB | ||||
| 38 | Accepted | 35ms | 2804 KiB | ||||
| 39 | Accepted | 35ms | 2888 KiB | ||||
| 40 | Accepted | 37ms | 2864 KiB | ||||
| 41 | Accepted | 35ms | 2868 KiB | ||||
| 42 | Accepted | 35ms | 2868 KiB | ||||
| 43 | Accepted | 35ms | 3276 KiB | ||||
| 44 | Accepted | 37ms | 3460 KiB | ||||
| 45 | Accepted | 35ms | 2612 KiB | ||||
| 46 | Accepted | 34ms | 2632 KiB | ||||
| 47 | Accepted | 34ms | 2616 KiB | ||||
| 48 | Accepted | 34ms | 2756 KiB | ||||
| 49 | Accepted | 35ms | 2612 KiB | ||||
| 50 | Accepted | 35ms | 2992 KiB | ||||
| 51 | Accepted | 35ms | 2868 KiB | ||||
| 52 | Accepted | 34ms | 2852 KiB | ||||
| 53 | Accepted | 35ms | 2868 KiB | ||||
| 54 | Accepted | 34ms | 3112 KiB | ||||