#include <bits/stdc++.h> using namespace std; typedef long long ll; typedef pair<ll, ll> pll; const ll LOG = 31; const ll MOD = 1000000007; const ll inf = 1e17; const ll B = 2305843009213693951; #define db(x) cerr << #x << " = " << x << " | " #define dbg(x) cerr << #x << " = " << x << "\n" #define Algerian ios::sync_with_stdio(0); #define OI cin.tie(NULL); int main() { Algerian OI ll n, k; cin >> n >> k; vector<ll> a(n), p(n); vector<vector<ll>> ch(n); for (ll i = 0; i < n; i++) cin >> a[i]; for (ll i = 0; i < n; i++) { cin >> p[i]; if (p[i] != -1) ch[p[i]].push_back(i); } vector<ll> freq(k); ll res = 0; for (ll i = 0; i < n; i++) { res = max(res, ++freq[a[i]]); } cout << res << " 0\n"; return 0; } S

Main.cpp:44:1: error: 'S' does not name a type
   44 | S
      | ^