Language: C++


#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#pragma GCC target("avx,avx2,fma")

#include <bits/stdc++.h>
using namespace std;

#define FIO ios::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr);
typedef long long ll;

int32_t main() {
	FIO;
	ll n, m, k, temp;
	cin >> n >> m >> k;
	vector <ll> a(n), b(m);
	for (int i=0;i<n; ++i) {
		if (!i) cin >> a[i];
		else {
			cin >> temp;
			a[i] = a[i-1]+temp;
		}
	}
	for (int i=0;i<m; ++i) {
	   	if (!i) cin >> b[i];
    	else {
    		cin >> temp;
    		b[i] = b[i-1]+temp;
		}
	}
	int ans = 0;
	for (int i=0; i<n; ++i) {
		ll diff = k - a[i];
		if (diff <= 0) 
			break;
		else {
			auto x = lower_bound(b.begin(), b.end(), diff);
			ans = max(ans, i+x-b.begin()+1);
		}
	}
	cout << ans << '\n';
}


Compiler output:
a.cc: In function 'int32_t main()':
a.cc:39:34: error: no matching function for call to 'max(int&, __gnu_cxx::__normal_iterator<long long int*, std::vector<long long int> >::difference_type)'
   39 |                         ans = max(ans, i+x-b.begin()+1);
      |                               ~~~^~~~~~~~~~~~~~~~~~~~~~
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:7:
/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:39:34: note:   deduced conflicting types for parameter 'const _Tp' ('int' and '__gnu_cxx::__normal_iterator<long long int*, std::vector<long long int> >::difference_type' {aka 'long int'})
   39 |                         ans = max(ans, i+x-b.begin()+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:
/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:39:34: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   39 |                         ans = max(ans, i+x-b.begin()+1);
      |                               ~~~^~~~~~~~~~~~~~~~~~~~~~