Language: C++

#include <iostream>
#include <queue>
#include <vector>
#include <utility>
#include <algorithm>
#include <string>
#include <cmath>
#define faster ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define pii pair<int, int>
#define ppi pair<pair<int, int>, int>
#define mp make_pair
#define show(v) for(int i : v)cout << i << " ";cout << endl;

using namespace std;
typedef long long ll;
int inf = 1e9;
const int N = 2e5 + 5;
ll a[N], b[N];

int main(){
    faster
    ll n, m, k;
    cin >> n >> m >> k;
    for(int i = 0;i < n;i++){
        cin >> a[i];
        if(i > 0)a[i] += a[i - 1];
        //cout << a[i] << " ";
    }
    //cout << endl;
    for(int i = 0;i < m;i++){
        cin >> b[i];
        if(i > 0)b[i] += b[i - 1];
        //cout << b[i] << " ";
    }
    //cout << endl;
    ll ans = 0;
    for(int i = 0;i < n;i++){
        ll x = k - a[i];
        if(x < 0)continue;
      	if(x == 0){
        	ans = max(ans, i + 1);
          	continue;
        }
        auto it = lower_bound(b, b + m, x);
        ll q = i + 1;
        ll w = ll(it - b) + 1;
        if(*it != x)w--;
        ll cnt = q + w;
        ans = max(cnt, ans);
    }
    cout << ans << endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:41:26: error: no matching function for call to 'max(ll&, int)'
   41 |                 ans = max(ans, i + 1);
      |                       ~~~^~~~~~~~~~~~
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:41:26: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
   41 |                 ans = max(ans, i + 1);
      |                       ~~~^~~~~~~~~~~~
/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:5:
/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:41:26: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   41 |                 ans = max(ans, i + 1);
      |                       ~~~^~~~~~~~~~~~