Language: C++

#include <iostream>
#include <algorithm>
#include <cmath>

constexpr int MAX_N = 100000;

int N;
long long C;
long long x[MAX_N], v[MAX_N];

int main(){

	std::cin >> N >> C;

	for(int i = 0; i < N; ++i){
		std::cin >> x[i] >> v[i];
	}

	long long ans = 0;
	for(int i = 0; i < N; ++i){
		long long tmp, ptmp;
		long long max = 0;
		long long pos = 0;
		for(int j = 0; j < N; ++j){
			int k = (i + j) % N;

			if(j != 0){
				tmp = ptmp + v[k] - std::min(abs(x[k] - pos), C - abs(x[k] - pos));
				pos = x[k];
			}
			else{
				tmp = v[k] - std::min(x[k], C - x[k]);
				pos = x[k];
			}
			max = std::max(max, tmp);
			ptmp = tmp;
		}
		ans = std::max(ans, max);
		max = 0, pos = 0, tmp = 0, ptmp = 0;
		for(int j = 0; j < N; ++j){
			int k = (i - j + N) % N;

			if(j != 0){
				tmp = ptmp + v[k] - std::min(abs(x[k] - pos), C - abs(x[k] - pos));
				pos = x[k];
			}
			else{
				tmp = v[k] - std::min(x[k], C - x[k]);
				pos = x[k];
			}
			max = std::max(max, tmp);
			ptmp = tmp;
		}
		ans = std::max(ans, max);
	}

	std::cout << ans << std::endl;

	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:28:61: error: no matching function for call to 'min(int, long long int)'
   28 |                                 tmp = ptmp + v[k] - std::min(abs(x[k] - pos), C - abs(x[k] - pos));
      |                                                     ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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:233:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::min(const _Tp&, const _Tp&)'
  233 |     min(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:233:5: note:   template argument deduction/substitution failed:
a.cc:28:61: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'long long int')
   28 |                                 tmp = ptmp + v[k] - std::min(abs(x[k] - pos), C - abs(x[k] - pos));
      |                                                     ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::min(const _Tp&, const _Tp&, _Compare)'
  281 |     min(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: 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:5686:5: note: candidate: 'template<class _Tp> constexpr _Tp std::min(initializer_list<_Tp>)'
 5686 |     min(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5686:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5696:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::min(initializer_list<_Tp>, _Compare)'
 5696 |     min(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5696:5: note:   template argument deduction/substitution failed:
a.cc:28:61: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   28 |                                 tmp = ptmp + v[k] - std::min(abs(x[k] - pos), C - abs(x[k] - pos));
      |                                                     ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
a.cc:44:61: error: no matching function for call to 'min(int, long long int)'
   44 |                                 tmp = ptmp + v[k] - std::min(abs(x[k] - pos), C - abs(x[k] - pos));
      |                                                     ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:233:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::min(const _Tp&, const _Tp&)'
  233 |     min(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:233:5: note:   template argument deduction/substitution failed:
a.cc:44:61: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'long long int')
   44 |                                 tmp = ptmp + v[k] - std::min(abs(x[k] - pos), C - abs(x[k] - pos));
      |                                                     ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::min(const _Tp&, const _Tp&, _Compare)'
  281 |     min(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note:   candidate expects 3 arguments, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5686:5: note: candidate: 'template<class _Tp> constexpr _Tp std::min(initializer_list<_Tp>)'
 5686 |     min(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5686:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5696:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::min(initializer_list<_Tp>, _Compare)'
 5696 |     min(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5696:5: note:   template argument deduction/substitution failed:
a.cc:44:61: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   44 |                                 tmp = ptmp + v[k] - std::min(abs(x[k] - pos), C - abs(x[k] - pos));
      |                                                     ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~