Language: C++

#include<iostream>
#include<stdio.h>
#include<vector>
#include<algorithm>
#include<set>
#include<string>
#include<map>
#include<string.h>
#include<complex>
#include<math.h>
#include<queue>
#include <functional>
#include<time.h>
#include <stack>
#include<iomanip>
using namespace std;
#define rep(i,a,n) for(int i=(a);i<(n);i++)
#define ll long long
#define llint long long int
#define reverse(v)  reverse(v.begin(), v.end());
#define Yes(ans) if(ans)cout<<"Yes"<<endl; else cout<<"No"<<endl;
#define YES(ans) if(ans)cout<<"YES"<<endl; else cout<<"NO"<<endl;
#define hei(a) vector<a>
#define whei(a) vector<vector<a>>
#define UF  UnionFind 
#define Pint pair<int,int>
#define Pll pair<llint,llint>
#define keta(a)  fixed << setprecision(a)
constexpr auto mod = 1000000007;
//辞書順はnext_permutation( begin( v ), end( v ) );やで！
const ll INF = (1LL << 63);


int main() {
	int h, w, m;
	cin >> h >> w >> m;
	map<Pint, int> s;
	hei(llint) c(h,0), d(w,0);

	rep(i, 0, m) {
		int x, y;
		cin >> x >> y;
		x--;
		y--;
		c[x]++;
		d[y]++;
		s[Pint(x, y)] = 1;
	}
	llint C = 0;
	rep(i, 0, h)C = max(C, c[i]);
	hei(llint) cc,dd;
	rep(i, 0, h)if (c[i] == C)cc.push_back(i);
	llint D = 0;
	rep(i, 0, w)D = max(D, d[i]);
	rep(i, 0, w)if (D == d[i])dd.push_back(i);
	llint ans = 0;
	rep(i, 0, cc.size()) {
		rep(j, 0, dd.size()) {
			ans = max(ans, c[cc[i]] + d[dd[j]] - s.count(Pint(cc[i], dd[j])));
		}
	}
	cout << ans << endl;

	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:59:34: error: no matching function for call to 'max(long long int&, long long unsigned int)'
   59 |                         ans = max(ans, c[cc[i]] + d[dd[j]] - s.count(Pint(cc[i], dd[j])));
      |                               ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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:59:34: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'long long unsigned int')
   59 |                         ans = max(ans, c[cc[i]] + d[dd[j]] - s.count(Pint(cc[i], dd[j])));
      |                               ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/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:4:
/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:59:34: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   59 |                         ans = max(ans, c[cc[i]] + d[dd[j]] - s.count(Pint(cc[i], dd[j])));
      |                               ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~