Language: C++

#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <cmath>
#include <string>
#include <vector>
#include <algorithm>
#include <stack>
#include <queue>
#include <set>
#include <map>
#include <bitset>

using namespace std;

#define gettime printf("\nTime : %0.3lf\n",clock()*1.0/CLOCKS_PER_SEC);
#define PB push_back
#define MP make_pair
#define rep(i,a,b) for(int i=a;i<=b;i++)
#define repp(i,a,b) for(int i=a;i>=b;i--)
#define Set(x,a) memset(x,a,sizeof(x));

#define vs vector<string>
#define vi vector<int>
#define ll long long
#define ff first
#define ss second

struct comp {
       bool operator() (int a,int b) {
            return a>b;
       }
};


int data[2005][2005][2] = {};

int main()
{
//    freopen("input.txt","r",stdin);
    //freopen("output.txt","w",stdout);
    //std::ios::sync_with_stdio(false);
    int n, k, x, y, ans = 0, batas;
    char c[5];
    scanf("%d %d", &n, &k);
    batas = k*2;
    rep (i,1,n) {
        scanf("%d %d %s", &x, &y, &c);
        data[y % batas][x % batas][(c[0] == 'W' ? 0 : 1)]++;
    }
    rep (i,0,batas-1) rep(j,0,batas-1) rep (m,0,1) {
        if (i == 0 && j == 0) continue;
        else if (j == 0) data[i][j][m] += data[i-1][j][m];
        else if (i == 0) data[i][j][m] += data[i][j - 1][m];
        else data[i][j][m] += data[i-1][j][m] + data[i][j-1][m] - data[i-1][j-1][m];
    }

    rep (i,0,k-1) rep(j,0,k-1) rep (m,0,1) {
        int tot = data[batas-1][batas-1][m] - data[batas - 1][j][m] - data[i][batas - 1][m] + 2 * data[i][j][m];
        tot += data[batas - 1][j][1- m] + data[i][batas - 1][1 - m] - 2 * data[i][j][1 - m];
        ans = max(ans, tot)
    }

    printf("%d\n", ans);

    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:50:9: error: reference to 'data' is ambiguous
   50 |         data[y % batas][x % batas][(c[0] == 'W' ? 0 : 1)]++;
      |         ^~~~
In file included from /usr/include/c++/14/string:53,
                 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/range_access.h:344:5: note: candidates are: 'template<class _Tp> constexpr const _Tp* std::data(initializer_list<_Tp>)'
  344 |     data(initializer_list<_Tp> __il) noexcept
      |     ^~~~
/usr/include/c++/14/bits/range_access.h:334:5: note:                 'template<class _Tp, long unsigned int _Nm> constexpr _Tp* std::data(_Tp (&)[_Nm])'
  334 |     data(_Tp (&__array)[_Nm]) noexcept
      |     ^~~~
/usr/include/c++/14/bits/range_access.h:323:5: note:                 'template<class _Container> constexpr decltype (__cont.data()) std::data(const _Container&)'
  323 |     data(const _Container& __cont) noexcept(noexcept(__cont.data()))
      |     ^~~~
/usr/include/c++/14/bits/range_access.h:312:5: note:                 'template<class _Container> constexpr decltype (__cont.data()) std::data(_Container&)'
  312 |     data(_Container& __cont) noexcept(noexcept(__cont.data()))
      |     ^~~~
a.cc:37:5: note:                 'int data [2005][2005][2]'
   37 | int data[2005][2005][2] = {};
      |     ^~~~
a.cc:54:26: error: reference to 'data' is ambiguous
   54 |         else if (j == 0) data[i][j][m] += data[i-1][j][m];
      |                          ^~~~
/usr/include/c++/14/bits/range_access.h:344:5: note: candidates are: 'template<class _Tp> constexpr const _Tp* std::data(initializer_list<_Tp>)'
  344 |     data(initializer_list<_Tp> __il) noexcept
      |     ^~~~
/usr/include/c++/14/bits/range_access.h:334:5: note:                 'template<class _Tp, long unsigned int _Nm> constexpr _Tp* std::data(_Tp (&)[_Nm])'
  334 |     data(_Tp (&__array)[_Nm]) noexcept
      |     ^~~~
/usr/include/c++/14/bits/range_access.h:323:5: note:                 'template<class _Container> constexpr decltype (__cont.data()) std::data(const _Container&)'
  323 |     data(const _Container& __cont) noexcept(noexcept(__cont.data()))
      |     ^~~~
/usr/include/c++/14/bits/range_access.h:312:5: note:                 'template<class _Container> constexpr decltype (__cont.data()) std::data(_Container&)'
  312 |     data(_Container& __cont) noexcept(noexcept(__cont.data()))
      |     ^~~~
a.cc:37:5: note:                 'int data [2005][2005][2]'
   37 | int data[2005][2005][2] = {};
      |     ^~~~
a.cc:54:43: error: reference to 'data' is ambiguous
   54 |         else if (j == 0) data[i][j][m] += data[i-1][j][m];
      |                                           ^~~~
/usr/include/c++/14/bits/range_access.h:344:5: note: candidates are: 'template<class _Tp> constexpr const _Tp* std::data(initializer_list<_Tp>)'
  344 |     data(initializer_list<_Tp> __il) noexcept
      |     ^~~~
/usr/include/c++/14/bits/range_access.h:334:5: note:                 'template<class _Tp, long unsigned int _Nm> constexpr _Tp* std::data(_Tp (&)[_Nm])'
  334 |     data(_Tp (&__array)[_Nm]) noexcept
      |     ^~~~
/usr/include/c++/14/bits/range_access.h:323:5: note:                 'template<class _Container> constexpr decltype (__cont.data()) std::data(const _Container&)'
  323 |     data(const _Container& __cont) noexcept(noexcept(__cont.data()))
      |     ^~~~
/usr/include/c++/14/bits/range_access.h:312:5: note:                 'template<class _Container> constexpr decltype (__cont.data()) std::data(_Container&)'
  312 |     data(_Container& __cont) noexcept(noexcept(__cont.data()))
      |     ^~~~
a.cc:37:5: note:                 'int data [2005][2005][2]'
   37 | int data[2005][2005][2] = {};
      |     ^~~~
a.cc:55:26: error: reference to 'data' is ambiguous
   55 |         else if (i == 0) data[i][j][m] += data[i][j - 1][m];
      |                          ^~~~
/usr/include/c++/14/bits/range_access.h:344:5: note: candidates are: 'template<class _Tp> constexpr const _Tp* std::data(initializer_list<_Tp>)'
  344 |     data(initializer_list<_Tp> __il) noexcept
      |     ^~~~
/usr/include/c++/14/bits/range_access.h:334:5: note:                 'template<class _Tp, long unsigned int _Nm> constexpr _Tp* std::data(_Tp (&)[_Nm])'
  334 |     data(_Tp (&__array)[_Nm]) noexcept
      |     ^~~~
/usr/include/c++/14/bits/range_access.h:323:5: note:                 'template<class _Container> constexpr decltype (__cont.data()) std::data(const _Container&)'
  323 |     data(const _Container& __cont) noexcept(noexcept(__cont.data()))
      |     ^~~~
/usr/include/c++/14/bits/range_access.h:312:5: note:                 'template<class _Container> constexpr decltype (__cont.data()) std::data(_Container&)'
  312 |     data(_Container& __cont) noexcept(noexcept(__cont.data()))
      |     ^~~~
a.cc:37:5: note:                 'int data [2005][2005][2]'
   37 | int data[2005][2005][2] = {};
      |     ^~~~
a.cc:55:43: error: reference to 'data' is ambiguous
   55 |         else if (i == 0) data[i][j][m] += data[i][j - 1][m];
      |                                           ^~~~
/usr/include/c++/14/bits/range_access.h:344:5: note: candidates are: 'template<class _Tp> constexpr const _Tp* std::data(initializer_list<_Tp>)'
  344 |     data(initializer_list<_Tp> __il) noexcept
      |     ^~~~
/usr/include/c++/14/bits/range_access.h:334:5: note:                 'template<class _Tp, long unsigned int _Nm> constexpr _Tp* std::data(_Tp (&)[_Nm])'
  334 |     data(_Tp (&__array)[_Nm]) noexcept
      |     ^~~~
/usr/include/c++/14/bits/range_access.h:323:5: note:                 'template<class _Container> constexpr decltype (__cont.data()) std::data(const _Container&)'
  323 |     data(const _Container& __cont) noexcept(noexcept(__cont.data()))
      |     ^~~~
/usr/include/c++/14/bits/range_access.h:312:5: note:                 'template<class _Container> constexpr decltype (__cont.data()) std::data(_Container&)'
  312 |     data(_Container& __cont) noexcept(noexcept(__cont.data()))
      |     ^~~~
a.cc:37:5: note:                 'int data [2005][2005][2]'
   37 | int data[2005][2005][2] = {};
      |     ^~~~
a.cc:56:14: error: reference to 'data' is ambiguous
   56 |         else data[i][j][m] += data[i-1][j][m] + data[i][j-1][m] - data[i-1][j-1][m];
      |              ^~~~
/usr/include/c++/14/bits/range_access.h:344:5: note: candidates are: 'template<class _Tp> constexpr const _Tp* std::data(initializer_list<_Tp>)'
  344 |     data(initializer_list<_Tp> __il) noexcept
      |     ^~~~
/usr/include/c++/14/bits/range_access.h:334:5: note:                 'template<class _Tp, long unsigned int _Nm> constexpr _Tp* std::data(_Tp (&)[_Nm])'
  334 |     data(_Tp (&__array)[_Nm]) noexcept
      |     ^~~~
/usr/include/c++/14/bits/range_access.h:323:5: note:                 'template<class _Container> constexpr decltype (__cont.data()) std::data(const _Container&)'
  323 |     data(const _Container& __cont) noexcept(noexcept(__cont.data()))
      |     ^~~~
/usr/include/c++/14/bits/range_access.h:312:5: note:                 'template<class _Container> constexpr decltype (__cont.data()) std::data(_Container&)'
  312 |     data(_Container& __cont) noexcept(noexcept(__cont.data()))
      |     ^~~~
a.cc:37:5: note:                 'int data [2005][2005][2]'
   37 | int data[2005][2005][2] = {};
      |     ^~~~
a.cc:56:31: error: reference to 'data' is ambiguous
   56 |         else data[i][j][m] += data[i-1][j][m] + data[i][j-1][m] - data[i-1][j-1][m];
      |                               ^~~~
/usr/include/c++/14/bits/range_access.h:344:5: note: candidates are: 'template<class _Tp> constexpr const _Tp* std::data(initializer_list<_Tp>)'
  344 |     data(initializer_list<_Tp> __il) noexcept
      |     ^~~~
/usr/include/c++/14/bits/range_access.h:334:5: note:                 'template<class _Tp, long unsigned int _Nm> constexpr _Tp* std::data(_Tp (&)[_Nm])'
  334 |     data(_Tp (&__array)[_Nm]) noexcept
      |     ^~~~
/usr/include/c++/14/bits/range_access.h:323:5: note:                 'template<class _Container> constexpr decltype (__cont.data()) std::data(const _Container&)'
  323 |     data(const _Container& __cont) noexcept(noexcept(__cont.data()))
      |     ^~~~
/usr/include/c++/14/bits/range_access.h:312:5: note:                 'template<class _Container> constexpr decltype (__cont.data()) std::data(_Container&)'
  312 |     data(_Container& __cont) noexcept(noexcept(__cont.data()))
      |     ^~~~
a.cc:37:5: note:                 'int data [2005][2005][2]'
   37 | int data[2005][2005][2] = {};
      |     ^~~~
a.cc:56:49: error: reference to 'data' is ambiguous
   56 |         else data[i][j][m] += data[i-1][j][m] + data[i][j-1][m] - data[i-1][j-1][m];
      |                                                 ^~~~
/usr/include/c++/14/bits/range_access.h:344:5: note: candidates are: 'template<class _Tp> constexpr const _Tp* std::data(initializer_list<_Tp>)'
  344 |     data(initializer_list<_Tp> __il) noexcept
      |     ^~~~
/usr/include/c++/14/bits/range_access.h:334:5: note:                 'template<class _Tp, long unsigned int _Nm> constexpr _Tp* std::data(_Tp (&)[_Nm])'
  334 |     data(_Tp (&__array)[_Nm]) noexcept
      |     ^~~~
/usr/include/c++/14/bits/range_access.h:323:5: note:                 'template<class _Container> constexpr decltype (__cont.data()) std::data(const _Container&)'
  323 |     data(const _Container& __cont) noexcept(noexcept(__cont.data()))
      |     ^~~~
/usr/include/c++/14/bits/range_access.h:312:5: note:                 'template<class _Container> constexpr decltype (__cont.data()) std::data(_Container&)'
  312 |     data(_Container& __cont) noexcept(noexcept(__cont.data()))
      |     ^~~~
a.cc:37:5: note:                 'int data [2005][2005][2]'
   37 | int data[2005][2005][2] = {};
      |     ^~~~
a.cc:56:67: error: reference to 'data' is ambiguous
   56 |         else data[i][