| 22292 | 2026-01-14 20:46:01 | helloworld | Hírlánc | cpp17 | Wrong answer 0/80 | 46ms | 9152 KiB |
#include <bits/stdc++.h>
using namespace std;
int N;
int C[200001];
int dp[200001]; // dp[i]: hány tanulót ér el i-ből indulva
int state[200001]; // 0 = nem jártunk itt, 1 = folyamatban, 2 = kész
int dfs(int u) {
state[u] = 1; // most dolgozzuk fel
int v = C[u];
if (state[v] == 0) {
dp[u] = dfs(v) + 1;
}
else if (state[v] == 1) {
// ciklust találtunk
int cur = v;
int len = 1;
while (C[cur] != v) {
cur = C[cur];
len++;
}
// a ciklus minden elemére ugyanaz az érték
cur = v;
dp[cur] = len;
cur = C[cur];
while (cur != v) {
dp[cur] = len;
cur = C[cur];
}
dp[u] = len;
}
else { // state[v] == 2, már kész
dp[u] = dp[v] + 1;
}
state[u] = 2; // kész
return dp[u];
}
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
cin >> N;
for (int i = 1; i <= N; i++) cin >> C[i];
for (int i = 1; i <= N; i++) {
if (state[i] == 0)
dfs(i);
}
int best = 1;
for (int i = 2; i <= N; i++) {
if (dp[i] > dp[best]) best = i;
}
cout << best << " " << dp[best] << "\n";
return 0;
}
| Subtask | Sum | Test | Verdict | Time | Memory | ||
|---|---|---|---|---|---|---|---|
| subtask1 | 0/0 | ||||||
| 1 | Accepted | 1ms | 316 KiB | ||||
| subtask2 | 0/20 | ||||||
| 2 | Wrong answer | 2ms | 316 KiB | ||||
| 3 | Wrong answer | 2ms | 316 KiB | ||||
| 4 | Wrong answer | 2ms | 316 KiB | ||||
| 5 | Wrong answer | 2ms | 316 KiB | ||||
| 6 | Wrong answer | 1ms | 316 KiB | ||||
| 7 | Wrong answer | 1ms | 316 KiB | ||||
| 8 | Wrong answer | 1ms | 472 KiB | ||||
| 9 | Wrong answer | 1ms | 316 KiB | ||||
| 10 | Wrong answer | 1ms | 316 KiB | ||||
| 11 | Wrong answer | 1ms | 316 KiB | ||||
| 12 | Wrong answer | 2ms | 316 KiB | ||||
| subtask3 | 0/18 | ||||||
| 13 | Wrong answer | 32ms | 2768 KiB | ||||
| 14 | Wrong answer | 37ms | 2756 KiB | ||||
| 15 | Wrong answer | 37ms | 2964 KiB | ||||
| 16 | Wrong answer | 37ms | 3204 KiB | ||||
| 17 | Wrong answer | 41ms | 4396 KiB | ||||
| 18 | Wrong answer | 39ms | 4792 KiB | ||||
| 19 | Wrong answer | 41ms | 4928 KiB | ||||
| 20 | Wrong answer | 41ms | 4916 KiB | ||||
| 21 | Wrong answer | 43ms | 7748 KiB | ||||
| 22 | Wrong answer | 46ms | 9152 KiB | ||||
| subtask4 | 0/42 | ||||||
| 23 | Accepted | 1ms | 512 KiB | ||||
| 24 | Wrong answer | 2ms | 316 KiB | ||||
| 25 | Wrong answer | 2ms | 316 KiB | ||||
| 26 | Wrong answer | 2ms | 316 KiB | ||||
| 27 | Wrong answer | 2ms | 316 KiB | ||||
| 28 | Wrong answer | 1ms | 316 KiB | ||||
| 29 | Wrong answer | 1ms | 316 KiB | ||||
| 30 | Wrong answer | 1ms | 472 KiB | ||||
| 31 | Wrong answer | 1ms | 316 KiB | ||||
| 32 | Wrong answer | 1ms | 316 KiB | ||||
| 33 | Wrong answer | 1ms | 316 KiB | ||||
| 34 | Wrong answer | 2ms | 316 KiB | ||||
| 35 | Wrong answer | 32ms | 2768 KiB | ||||
| 36 | Wrong answer | 37ms | 2756 KiB | ||||
| 37 | Wrong answer | 37ms | 2964 KiB | ||||
| 38 | Wrong answer | 37ms | 3204 KiB | ||||
| 39 | Wrong answer | 41ms | 4396 KiB | ||||
| 40 | Wrong answer | 39ms | 4792 KiB | ||||
| 41 | Wrong answer | 41ms | 4928 KiB | ||||
| 42 | Wrong answer | 41ms | 4916 KiB | ||||
| 43 | Wrong answer | 43ms | 7748 KiB | ||||
| 44 | Wrong answer | 46ms | 9152 KiB | ||||
| 45 | Wrong answer | 32ms | 2764 KiB | ||||
| 46 | Wrong answer | 32ms | 2612 KiB | ||||
| 47 | Wrong answer | 32ms | 2612 KiB | ||||
| 48 | Wrong answer | 32ms | 2680 KiB | ||||
| 49 | Wrong answer | 35ms | 3124 KiB | ||||
| 50 | Wrong answer | 34ms | 3644 KiB | ||||
| 51 | Wrong answer | 35ms | 3632 KiB | ||||
| 52 | Wrong answer | 34ms | 3636 KiB | ||||
| 53 | Wrong answer | 35ms | 4148 KiB | ||||
| 54 | Wrong answer | 35ms | 4676 KiB | ||||