Language: C++

#include <bits/stdc++.h>

using namespace std;
typedef long long ll ;
ll arr[5001] , score [5001] , vis[5001];
ll n  , k ;
const ll OO =-1e18;
ll mx;
ll cycleLen(ll idx)
{
    if(vis[idx])
        return 0;
    vis[idx]++;
    ll cnt=cycleLen(arr[idx])+1;
    return cnt;
}
ll cycleVal( ll idx , ll num , ll scsofar , ll MX)
{
    if(vis[idx])
        return 0;
    vis[idx]++;
    scsofar+=score[arr[idx]];
    num++;
    if(num<=MX)mx=max(mx , scsofar);
    ll ans=cycleVal(arr[idx] , num , scsofar , MX)+score[arr[idx]];
    return ans;
}
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    ll n, k ;
    cin >> n >>k ;
    for(int i = 1 ; i <=n ;i++)
    {
        cin >> arr[i];
    }
    for(int i = 1 ; i <=n ;i++)
    {
        cin >> score[i];
    }
    ll ans=OO , len , cyc;
    pair<int,int>p;
    for(int i = 1 ; i <=n ; i++)
    {
        memset(vis , 0 , sizeof vis);
        mx=OO;
        len=cycleLen(i);
        memset(vis , 0 , sizeof vis);
        cyc=cycleVal(i , 0 , 0 , k%len );
        ll x= k/len ;
        ans=max(ans , cyc*(x)+mx);
        memset(vis , 0 , sizeof vis);
        mx=OO;
        cyc=cycleVal(i , 0 , 0 , min(k,len) );
        ans=max(ans , cyc*max(x-1 , 0)+mx);
        ans=max(ans , mx);
    }
    cout << ans ;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:56:30: error: no matching function for call to 'max(ll, int)'
   56 |         ans=max(ans , cyc*max(x-1 , 0)+mx);
      |                           ~~~^~~~~~~~~
In file included from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h:257:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)'
  257 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:257:5: note:   template argument deduction/substitution failed:
a.cc:56:30: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
   56 |         ans=max(ans , cyc*max(x-1 , 0)+mx);
      |                           ~~~^~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)'
  303 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note:   candidate expects 3 arguments, 2 provided
In file included from /usr/include/c++/14/algorithm:61:
/usr/include/c++/14/bits/stl_algo.h:5706:5: note: candidate: 'template<class _Tp> constexpr _Tp std::max(initializer_list<_Tp>)'
 5706 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5706:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5716:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::max(initializer_list<_Tp>, _Compare)'
 5716 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5716:5: note:   template argument deduction/substitution failed:
a.cc:56:30: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   56 |         ans=max(ans , cyc*max(x-1 , 0)+mx);
      |                           ~~~^~~~~~~~~