Language: C++

/*
                                                                                                     
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                                          `-+o+/:---:/+o/.                                          
                                            `.:+oooo+/-.`                                           
                                               ``````                                               
*/


#include <iostream>
#include <vector>
#include <algorithm>
#include <cmath>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <map>
#include <set>
#include <queue>
#include <ostream>
#include <istream>
#include <typeinfo>
#include <iomanip>
#include <cstdio>
#include <cstdlib>
#include <cassert>
#include <limits>
#include <fstream>
#include <array>
#include <list>
#include <bitset>
#include <functional>

#define mt make_tuple
#define x first
#define y second
#define pb push_back
#define ppb pop_back
#define pf push_front
#define ppf pop_front
#define mp make_pair
#define umap unordered_map
#define uset unordered_set
#define rt return 0;
#define elif else if
#define len(v) ((int)v.size())


using namespace std;

char string_in_buffer[(int)260];


void fast_scan(int &x) { scanf("%d", &x); }
void fast_scan(long long &x) { scanf("%lld", &x); }
void fast_scan(unsigned long long &x) { scanf("%llu", &x); }
void fast_scan(double &x) { scanf("%lf", &x); }
void fast_scan(long double &x) { scanf("%Lf", &x); }
void fast_scan(char &x) { 
	scanf("%c", &x); 
	if (x == '\n') {
		fast_scan(x);
	}
}
void fast_scan(string &x) {
	scanf("%s", string_in_buffer);
	x = string(string_in_buffer);
}

template<class TFirst, class TSecond>
void fast_scan(pair<TFirst, TSecond> &p) {
	fast_scan(p.first);
	fast_scan(p.second);
}

template <class T>
void fast_scan(vector<T> &v) {
	for (auto &x : v) fast_scan(x);
}

void fast_print(const int &x) { printf("%d", x); }
void fast_print(const long long &x) { printf("%lld", x); }
void fast_print(const unsigned long long &x) { printf("%llu", x); }
void fast_print(const double &x) { printf("%.15lf", x); }
void fast_print(const long double &x) { printf("%.15Lf", x); }
void fast_print(const char &x) { printf("%c", x); };
void fast_print(const string &x) { printf("%s", x.c_str());}

template<class TFirst, class TSecond>
void fast_print(const pair<TFirst, TSecond> &p) {
	fast_print(p.first);
	fast_print(' ');
	fast_print(p.second);
}

template <class T>
void fast_print(const vector<T> &v) {
	if (v.empty()) return;
	fast_print(v[0]);
	for (int i = 1; i < v.size(); i++) {
		fast_print(" ");
		fast_print(v[i]);
	}
}

template <class T>
void fast_print(const vector<vector<T>> &v) {
	if (v.empty()) return;
	fast_print(v[0]);
	for (int i = 1; i < v.size(); i++) {
		fast_print("\n");
		fast_print(v[i]);
	}
}



using namespace std;


namespace smart_io {
	string print_start = "";
	string sep = " ";
	bool first_print = false;

	void precall_print() {
		fast_print(print_start);
		print_start = "\n";
		first_print = true;
	}
} //namespace smart_io


template <class T>
ostream &operator,(ostream &os, const T &object) {
	if (!smart_io::first_print) {
		fast_print(smart_io::sep);
	} else {
		smart_io::first_print = false;
	}
	fast_print(object);
	return os;
}

template <class T>
istream &operator,(istream &is, T &object) {
	fast_scan(object);
	return is;
}

#define int long long

namespace typedefs {
	typedef long long ll;
	typedef unsigned long long ull;
	typedef pair<int, int> pii;
	typedef long double ld;
}

namespace numbers_operation {
	template<class T>
	T floor_mod(T a, T b) {
		if (a % b == 0) return 0;
		if (a >= 0 && b >= 0) return a % b;
		if (a <= 0 && b <= 0) return a % b;
		return abs(b) - (abs(a) % abs(b));
	}
}

using namespace numbers_operation;
using namespace typedefs;

#define print    \
smart_io::precall_print(); \
cout,

#define scan cin,

struct SUS {
	map<int, int> up;

	void add_vertex(int v) {
		up[v] = v;
	}

	int get_root(int v) {
		if (up[v] == v) return v;
		return up[v] = get_root(up[v]);
	}

	void merge(int a, int b) {
		a = get_root(a);
		b = get_root(b);
	}
};

enum EventType {
	QUERY, TURN
};

struct Event {
	int time;
	int dis;
	int id;
	EventType type;

	Event() {}
	Event(int _time) {
		time = _time;
		type = TURN;
	}

	Event(int _time, int _dis, int _id) {
		time = _time;
		dis = _dis;
		type = QUERY;
		id = _id;
	}
};


signed main(signed argc, char *argv[]) {
	int x;
	int k;
	scan x, k;

	vector<int> ch(k);
	scan ch;

	int q;
	scan q;

	vector<pii> qs(q);
	scan qs;

	vector<Event> events;

	for (int i = 0; i < k; i++) {
		events.emplace_back(ch[i]);
	}

	for (int i = 0; i < q; i++) {
		events.emplace_back(qs[i].first, qs[i].second, i);
	}

	sort(events.begin(), events.end(), [](Event a, Event b){
		return a.time < b.time;
	});

	int cur = 0;
	bool upa = true;
	int left = 0;
	int right = x;
	int delta = 0;
	bool rez_fa = false;
	int sub = 0;

	vector<int> rez(q);

	for (Event e : events) {
		int spend = e.time - cur;
		cur = e.time;
		int d = upa ? -spend : spend;
		sub += d;
		sub = min(sub, x);
		sub = max(sub, 0);
		delta += d;
		if (delta < 0) {
			left = max(left, abs(delta));
		} else {
			right = min(right, x - delta);
		}


		if (left > right) {
			rez_fa = true;
			if (delta < 0) {
				sub = 0;
			} else {
				sub = x;
			}
		}

		if (e.type == QUERY) {
			if (rez_fa) {
				rez[e.id] = sub;
			} else {
				if (e.dis < left) {
					rez[e.id] = left + delta;
				} else if (e.dis > right) {
					rez[e.id] = right + delta;
				} else {
					rez[e.id] = e.dis + delta;
				}
			}
		} else {
			upa = !upa;
		}
	}
	
	for (int x : rez) {
		print x;
	}
}

Compiler output:
a.cc: In function 'int main(int, char**)':
a.cc:314:26: error: no matching function for call to 'max(long long int&, int)'
  314 |                 sub = max(sub, 0);
      |                       ~~~^~~~~~~~
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:58:
/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:314:26: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
  314 |                 sub = max(sub, 0);
      |                       ~~~^~~~~~~~
/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:60:
/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:314:26: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
  314 |                 sub = max(sub, 0);
      |                       ~~~^~~~~~~~