#include <iostream>
#include <vector>
using namespace std;
int n;
vector <int> v, lat, ut, hossz;
void bejar(int k)
{
int ind=k;
do
{
lat[ind]=1;
ut.push_back(ind);
ind=v[ind];
}
while (lat[ind]==0);
int tmp;
if (lat[ind]==1)
{
tmp=ind;
int nr=0;
do
{
nr++;
tmp=v[tmp];
}
while (tmp!=ind);
do
{
hossz[tmp]=nr;
lat[tmp]=2;
tmp=v[tmp];
}
while(tmp!=ind);
}
tmp=ind;
for(int i=ut.size()-1;i>=0; i--)
{
if (lat[ut[i]]==1)
{
hossz[ut[i]]=hossz[v[ut[i]]]+1;
lat[ut[i]]=2;
}
}
}
int main()
{
cin >> n;
v.resize(n+1);
for (int i=1; i<=n; i++)
{
cin >> v[i];
}
lat.resize(n+1);
hossz.resize(n+1);
fill(lat.begin(), lat.end()-1,0);
fill(hossz.begin(), hossz.end()-1,0);
for (int i=1; i<=n; i++)
{
if (lat[i]==0)
{
bejar(i);
ut.clear();
}
}
int max=0, csp=0;
for (int i=1; i<=n; i++)
{
if (hossz[i] > max)
{
max=hossz[i];
csp=i;
}
}
cout << csp << " " << max;
return 0;
}
| Subtask | Sum | Test | Verdict | Time | Memory | ||
|---|---|---|---|---|---|---|---|
| subtask1 | 0/0 | ||||||
| 1 | Accepted | 1ms | 316 KiB | ||||
| subtask2 | 20/20 | ||||||
| 2 | Accepted | 1ms | 316 KiB | ||||
| 3 | Accepted | 2ms | 500 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 | 1ms | 316 KiB | ||||
| 10 | Accepted | 1ms | 316 KiB | ||||
| 11 | Accepted | 1ms | 316 KiB | ||||
| 12 | Accepted | 1ms | 316 KiB | ||||
| subtask3 | 18/18 | ||||||
| 13 | Accepted | 81ms | 2724 KiB | ||||
| 14 | Accepted | 79ms | 2612 KiB | ||||
| 15 | Accepted | 79ms | 2732 KiB | ||||
| 16 | Accepted | 81ms | 2728 KiB | ||||
| 17 | Accepted | 82ms | 3124 KiB | ||||
| 18 | Accepted | 82ms | 3244 KiB | ||||
| 19 | Accepted | 82ms | 3372 KiB | ||||
| 20 | Accepted | 82ms | 3248 KiB | ||||
| 21 | Accepted | 83ms | 3892 KiB | ||||
| 22 | Accepted | 82ms | 3756 KiB | ||||
| subtask4 | 42/42 | ||||||
| 23 | Accepted | 1ms | 316 KiB | ||||
| 24 | Accepted | 1ms | 316 KiB | ||||
| 25 | Accepted | 2ms | 500 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 | 1ms | 316 KiB | ||||
| 32 | Accepted | 1ms | 316 KiB | ||||
| 33 | Accepted | 1ms | 316 KiB | ||||
| 34 | Accepted | 1ms | 316 KiB | ||||
| 35 | Accepted | 81ms | 2724 KiB | ||||
| 36 | Accepted | 79ms | 2612 KiB | ||||
| 37 | Accepted | 79ms | 2732 KiB | ||||
| 38 | Accepted | 81ms | 2728 KiB | ||||
| 39 | Accepted | 82ms | 3124 KiB | ||||
| 40 | Accepted | 82ms | 3244 KiB | ||||
| 41 | Accepted | 82ms | 3372 KiB | ||||
| 42 | Accepted | 82ms | 3248 KiB | ||||
| 43 | Accepted | 83ms | 3892 KiB | ||||
| 44 | Accepted | 82ms | 3756 KiB | ||||
| 45 | Accepted | 78ms | 2728 KiB | ||||
| 46 | Accepted | 79ms | 2612 KiB | ||||
| 47 | Accepted | 78ms | 2728 KiB | ||||
| 48 | Accepted | 76ms | 2740 KiB | ||||
| 49 | Accepted | 79ms | 2872 KiB | ||||
| 50 | Accepted | 79ms | 2872 KiB | ||||
| 51 | Accepted | 79ms | 2868 KiB | ||||
| 52 | Accepted | 78ms | 2984 KiB | ||||
| 53 | Accepted | 79ms | 3128 KiB | ||||
| 54 | Accepted | 79ms | 3272 KiB | ||||