Language: C++

    #include <bits/stdc++.h>
    #include <chrono>

    using namespace std;
    using namespace std::chrono; 

    typedef long long int ll;

    #define MOD (ll)(1e9+7)
    #define endl "\n"
    #define pb push_back
    #define TEST_CASES  ll t;cin>>t;while(t--)
    #define forn(i,a,n) for (int i = a; i < n; ++i)
    #define f first
    #define s second
    #define all(x) x.begin(), x.end()

    void __print(int x) {cerr << x;}
    void __print(long x) {cerr << x;}
    void __print(long long x) {cerr << x;}
    void __print(unsigned x) {cerr << x;}
    void __print(unsigned long x) {cerr << x;}
    void __print(unsigned long long x) {cerr << x;}
    void __print(float x) {cerr << x;}
    void __print(double x) {cerr << x;}
    void __print(long double x) {cerr << x;}
    void __print(char x) {cerr << '\'' << x << '\'';}
    void __print(const char *x) {cerr << '\"' << x << '\"';}
    void __print(const string &x) {cerr << '\"' << x << '\"';}
    void __print(bool x) {cerr << (x ? "true" : "false");}

    template<typename T, typename V>
    void __print(const pair<T, V> &x) {cerr << '{'; __print(x.first); cerr << ','; __print(x.second); cerr << '}';}
    template<typename T>
    void __print(const T &x) {int f = 0; cerr << '{'; for (auto &i: x) cerr << (f++ ? "," : ""), __print(i); cerr << "}";}
    void _print() {cerr << "]\n";}
    template <typename T, typename... V>
    void _print(T t, V... v) {__print(t); if (sizeof...(v)) cerr << ", "; _print(v...);}
    #ifndef ONLINE_JUDGE
    #define debug(x...) cerr << "[" << #x << "] = ["; _print(x)
    #else
    #define debug(x...)
    #endif

    ll powD(ll x,ll y){
      ll res = 1;
      while(y > 0){
        if(y & 1)
          res = (res*x)%MOD;
        x = (x*x)%MOD;
        y = y>>1;
      }
      return res;
    }
    /*CHECK FOR CORNER CASES FOR GOD'S SAKE*/
    int main()
    {
      //freopen("dislodging_logs_validation_input.txt", "r", stdin);
      //freopen("output.txt", "w", stdout);
      ios_base::sync_with_stdio(false);
      cin.tie(NULL);
      int h,w,m;
      cin>>h>>w>>m;
      vector<int> x(h,0),y(w,0);
      map<pair<int,int>,bool> targets;
      vector<pair<int,int>> t;
      forn(i,0,m){
          int u,v;
          cin>>u>>v;
          u--;v--;
          targets[{u,v}] = 1;
          x[u]++;
          y[v]++;
          t.push_back({u,v});
      }
      int maxx = *max_element(all(x));
      int maxy = *max_element(all(y));
      vector<int> xcandi,ycandi;
      forn(i,0,h){
        if(maxx == x[i])
          xcandi.push_back(i);
      }
      forn(j,0,w){
        if(maxy == y[j])
          ycandi.push_back(j);
      }
      ll a = xcandi.size();
      ll b = ycandi.size();
      if(a*b > m){
        cout<<maxy+maxx<<endl;
      }
      else{
        bool flag = 0;
        for(auto i : xcandi){
          for(auto j : ycandi){
            if(!targets[{i,j}])
              flag = 1;
          }
        }
        if(flag)
          cout<<maxx+max<<endl;
        else
          cout<<maxx+maxy-1<<endl;
      }
  } 



     
    


Compiler output:
a.cc: In function 'int main()':
a.cc:101:21: error: invalid operands of types 'int' and '<unresolved overloaded function type>' to binary 'operator+'
  101 |           cout<<maxx+max<<endl;
      |                 ~~~~^~~~