Language: C++

#include<iostream>
#include<algorithm>
#include<string>
#include<cmath>
#include<vector>
using namespace std;

int main() {
	long long n;
	cin >> n;
	long long x[n], y[n], h[n];
	for (int i = 0; i < n; i++) {
		cin >> x[i] >> y[i] >> h[i];
	}
	//ok
	//for (int i = 0; i < n; i++) {if (h[i] != 0) {swap(x[i], x[0]);swap(y[i], y[0]);swap(h[i], h[0]);break;}}
	for (int cx = 0; cx <= 100; cx++) {
		for (int cy = 0; cy <= 100; cy++) {
			long long H = h[0] + abs(x[0] - cx) + abs(y[0] - cy);//仮に決まったもの
			bool flag = true;
			for (int i = 0; i < n; i++) {//矛盾が無いか
				long long p = H - abs(x[i] - cx) - abs(y[i] - cy);
				if (h[i] != max(p, 0))flag = false;
			}
			if (flag) {
				cout << cx << " " << cy << " " << H << endl;
			}
		}
	}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:23:48: error: no matching function for call to 'max(long long int&, int)'
   23 |                                 if (h[i] != max(p, 0))flag = false;
      |                                             ~~~^~~~~~
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:23:48: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
   23 |                                 if (h[i] != max(p, 0))flag = false;
      |                                             ~~~^~~~~~
/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:2:
/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:23:48: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   23 |                                 if (h[i] != max(p, 0))flag = false;
      |                                             ~~~^~~~~~