Language: C++

#include <bits/stdc++.h>

using namespace std;

#define int int64_t

typedef pair<int, int> ii;
const int infinity = 1e18;

int number;
ii segment[100001];
int f[401][401];

int32_t main()
{
	ios::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);

	cin >> number;
	for (int i = 1; i <= number; i++)
		cin >> segment[i].first >> segment[i].second;
	for (int i = 0; i <= 400; i++)
		for (int j = 0; j <= 400; j++)
			f[i][j] = infinity;
	for (int j = 1; j <= 400; j++)	
	{
		int l = segment[1].first, r = segment[1].second;
		f[1][j] = ((l <= j && j <= r) ? 0 : (j < l) ? l - j : j - r);
	}
	for (int i = 2; i <= number; i++)
		for (int j = 1; j <= 400; j++)
		{
			int l = segment[i].first, r = segment[i].second;
			int cost = ((l <= j && j <= r) ? 0 : (j < l) ? l - j : j - r);
			int segment_length = r - l + 1;
			for (int k = max(1LL, l - segment_length); k <= r; k++)
				f[i][j] = min(f[i][j], f[i - 1][k] + cost);
		}

	int answer = infinity;
	for (int i = 1; i <= 400; i++)
		answer = min(answer, f[number][i]);
	cout << answer;
}

Compiler output:
a.cc: In function 'int32_t main()':
a.cc:37:41: error: no matching function for call to 'max(long long int, int64_t)'
   37 |                         for (int k = max(1LL, l - segment_length); k <= r; k++)
      |                                      ~~~^~~~~~~~~~~~~~~~~~~~~~~~~
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:37:41: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int64_t' {aka 'long int'})
   37 |                         for (int k = max(1LL, l - segment_length); k <= r; k++)
      |                                      ~~~^~~~~~~~~~~~~~~~~~~~~~~~~
/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:37:41: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   37 |                         for (int k = max(1LL, l - segment_length); k <= r; k++)
      |                                      ~~~^~~~~~~~~~~~~~~~~~~~~~~~~