Language: C++

#include <iostream>
#include <algorithm>
#include <vector>
#include <cmath>
#include <string>
#include <queue>
using namespace std;

#define ll long long
#define rep(i, n) for(int i = 0; i < n; i++)

int main() {
    ll n, m, k;
    cin >> n >> m >> k;
    vector<ll> a(n);
    vector<ll> b(m);
    rep(i, n) cin >> a[i];
    rep(i, m) cin >> b[i];
    ll time = 0;
    ll an = 0, bn = 0;
    ll ans = 0;
    ll tmp = 0;
    while(1) {
        if(time > k) break;
        if(an < n && bn < m) {
            if(a[an] < b[bn]) {
                time += a[an];
                if(tmp != 0) bn -= tmp;
                an++;
                tmp = 0;
            }
            else if(a[an] > b[bn]) {
                time += b[bn];
                if(tmp != 0) an -= tmp;
                bn++;
                tmp = 0;
            }
            else  {
                time += a[an];
                an++;
                bn++;
                tmp++;
            }
            //ans++;
        }
        else if(an >= n && bn < m) {
            time += b[bn];
            if(tmp != 0) an -= tmp;
            bn++;
            tmp = 0;
        }
        else if(an < n && bn >= m) {
            time += a[an];
            if(tmp != 0) bn -= tmp;
            an++;
            tmp = 0;
        }
        else if(an >= n && bn >= m) {
            time = k+1;
        }
        ans++;
        //cout << time << endl;
        //cout << an << " " << bn << endl;
    }
    cout << max(ans-1, 0) << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:65:16: error: no matching function for call to 'max(long long int, int)'
   65 |     cout << max(ans-1, 0) << endl;
      |             ~~~^~~~~~~~~~
In file included from /usr/include/c++/14/string:51,
                 from /usr/include/c++/14/bits/locale_classes.h:40,
                 from /usr/include/c++/14/bits/ios_base.h:41,
                 from /usr/include/c++/14/ios:44,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 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:65:16: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
   65 |     cout << max(ans-1, 0) << endl;
      |             ~~~^~~~~~~~~~
/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,
                 from a.cc:2:
/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:65:16: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   65 |     cout << max(ans-1, 0) << endl;
      |             ~~~^~~~~~~~~~