Language: C++

#include <stdio.h>
#include <assert.h>
#include <fstream>
#include <iostream>
#include <algorithm>
#include <array>
#include <vector>
#include <queue>
#include <set>
#include <cmath>
#include <unordered_map>
//#include <unordered_set>
//#include <boost/container/static_vector.hpp>
//#include <boost/unordered_set.hpp>
//#include <boost/unordered_map.hpp>
//#include <unistd.h>

//#include <cv.h>
//#include <highgui.h>
#include <stdlib.h>
#include <time.h>

#include <string>

const int MAX_N = 2050;
const int MAX_Q = 200000;
int N, M, Q;

char S[MAX_N][MAX_N];
int x1[MAX_Q], y1[MAX_Q], x2[MAX_Q], y2[MAX_Q];

int ac_node[MAX_N][MAX_N] = {};
int ac_edge_hor[MAX_N][MAX_N] = {};
int ac_edge_ver[MAX_N][MAX_N] = {};

int main(int argc, char **argv) {
    std::cin >> N >> M >> Q;

    for (int i = 1; i <= N; i++) {
        for (int j = 1; j <= M; j++) {
            std::cin >> S[i][j];
        }
    }

    for (int i = 1; i <= Q; i++) {
        std::cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
    }

    for (int i = 1; i <= N; i++) {
        int ac_tmp = 0;
        for (int j = 1; j <= M; j++) {
            if (S[i][j] == '1') {
                ac_tmp++;
            }
            ac_node[i][j] = ac_node[i-1][j] + ac_tmp;
        }

        int ac_tmp_edge_hor = 0;
        int ac_tmp_edge_ver = 0;
        for (int j = 1; j <= M; j++) {
            if (S[i][j] == '1' && S[i][j-1] == '1') {
                ac_tmp_edge_ver++;
            }
            if (S[i][j] == '1' && S[i-1][j] == '1') {
                ac_tmp_edge_hor++;
            }
            ac_edge_ver[i][j] = ac_edge_ver[i-1][j] + ac_tmp_edge_ver;
            ac_edge_hor[i][j] = ac_edge_hor[i-1][j] + ac_tmp_edge_hor;
        }
    }

    for (int i = 1; i <= Q; i++) {
        int node_num = ac_node[x2[i]][y2[i]] - ac_node[x2[i]][y1[i] - 1] - ac_node[x1[i] - 1][y2[i]] + ac_node[x1[i] - 1][y1[i] - 1];
        int edge_num_hor = ac_edge_hor[x2[i]][y2[i]] - ac_edge_hor[x2[i]][y1[i] - 1] - ac_edge_hor[x1[i]][y2[i]] + ac_edge_hor[x1[i]][y1[i] - 1];
        int edge_num_ver = ac_edge_ver[x2[i]][y2[i]] - ac_edge_ver[x2[i]][y1[i]] - ac_edge_ver[x1[i] - 1][y2[i]] + ac_edge_ver[x1[i] - 1][y1[i]];

        //std::cout << "check:" << node_num << " " << edge_num << std::endl;

        std::cout << node_num - edge_num_hor - edge_num_ver << std::endl;
    }

    return 0;
}

Compiler output:
a.cc:30:24: error: 'int y1 [200000]' redeclared as different kind of entity
   30 | int x1[MAX_Q], y1[MAX_Q], x2[MAX_Q], y2[MAX_Q];
      |                        ^
In file included from /usr/include/features.h:523,
                 from /usr/include/x86_64-linux-gnu/bits/libc-header-start.h:33,
                 from /usr/include/stdio.h:28,
                 from a.cc:1:
/usr/include/x86_64-linux-gnu/bits/mathcalls.h:257:1: note: previous declaration 'double y1(double)'
  257 | __MATHCALL (y1,, (_Mdouble_));
      | ^~~~~~~~~~
a.cc: In function 'int main(int, char**)':
a.cc:46:34: warning: pointer to a function used in arithmetic [-Wpointer-arith]
   46 |         std::cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                  ^
a.cc:46:27: error: no match for 'operator>>' (operand types are 'std::basic_istream<char>::__istream_type' {aka 'std::basic_istream<char>'} and 'double(double) noexcept')
   46 |         std::cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |         ~~~~~~~~~~~~~~~~~ ^~ ~~~~~
      |                  |               |
      |                  |               double(double) noexcept
      |                  std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}
In file included from /usr/include/c++/14/fstream:40,
                 from a.cc:3:
/usr/include/c++/14/istream:170:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(bool&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  170 |       operator>>(bool& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:170:7: note:   conversion of argument 1 would be ill-formed:
a.cc:46:34: error: cannot bind non-const lvalue reference of type 'bool&' to a value of type 'double (*)(double) noexcept'
   46 |         std::cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                              ~~~~^
/usr/include/c++/14/istream:174:7: note: candidate: 'std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(short int&) [with _CharT = char; _Traits = std::char_traits<char>]' (near match)
  174 |       operator>>(short& __n);
      |       ^~~~~~~~
/usr/include/c++/14/istream:174:7: note:   conversion of argument 1 would be ill-formed:
a.cc:46:34: error: invalid conversion from 'double (*)(double) noexcept' to 'short int' [-fpermissive]
   46 |         std::cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                              ~~~~^
      |                                  |
      |                                  double (*)(double) noexcept
a.cc:46:34: error: cannot bind rvalue '(short int)(y1 + ((sizetype)i))' to 'short int&'
/usr/include/c++/14/istream:177:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(short unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  177 |       operator>>(unsigned short& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:177:7: note:   conversion of argument 1 would be ill-formed:
a.cc:46:34: error: invalid conversion from 'double (*)(double) noexcept' to 'short unsigned int' [-fpermissive]
   46 |         std::cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                              ~~~~^
      |                                  |
      |                                  double (*)(double) noexcept
a.cc:46:34: error: cannot bind rvalue '(short unsigned int)(y1 + ((sizetype)i))' to 'short unsigned int&'
/usr/include/c++/14/istream:181:7: note: candidate: 'std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(int&) [with _CharT = char; _Traits = std::char_traits<char>]' (near match)
  181 |       operator>>(int& __n);
      |       ^~~~~~~~
/usr/include/c++/14/istream:181:7: note:   conversion of argument 1 would be ill-formed:
a.cc:46:34: error: invalid conversion from 'double (*)(double) noexcept' to 'int' [-fpermissive]
   46 |         std::cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                              ~~~~^
      |                                  |
      |                                  double (*)(double) noexcept
a.cc:46:34: error: cannot bind rvalue '(int)(y1 + ((sizetype)i))' to 'int&'
/usr/include/c++/14/istream:184:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  184 |       operator>>(unsigned int& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:184:7: note:   conversion of argument 1 would be ill-formed:
a.cc:46:34: error: invalid conversion from 'double (*)(double) noexcept' to 'unsigned int' [-fpermissive]
   46 |         std::cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                              ~~~~^
      |                                  |
      |                                  double (*)(double) noexcept
a.cc:46:34: error: cannot bind rvalue '(unsigned int)(y1 + ((sizetype)i))' to 'unsigned int&'
/usr/include/c++/14/istream:188:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  188 |       operator>>(long& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:188:7: note:   conversion of argument 1 would be ill-formed:
a.cc:46:34: error: invalid conversion from 'double (*)(double) noexcept' to 'long int' [-fpermissive]
   46 |         std::cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                              ~~~~^
      |                                  |
      |                                  double (*)(double) noexcept
a.cc:46:34: error: cannot bind rvalue '(long int)(y1 + ((sizetype)i))' to 'long int&'
/usr/include/c++/14/istream:192:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  192 |       operator>>(unsigned long& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:192:7: note:   conversion of argument 1 would be ill-formed:
a.cc:46:34: error: invalid conversion from 'double (*)(double) noexcept' to 'long unsigned int' [-fpermissive]
   46 |         std::cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                              ~~~~^
      |                                  |
      |                                  double (*)(double) noexcept
a.cc:46:34: error: cannot bind rvalue '(long unsigned int)(y1 + ((sizetype)i))' to 'long unsigned int&'
/usr/include/c++/14/istream:199:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long long int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  199 |       operator>>(long long& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:199:7: note:   conversion of argument 1 would be ill-formed:
a.cc:46:34: error: invalid conversion from 'double (*)(double) noexcept' to 'long long int' [-fpermissive]
   46 |         std::cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                              ~~~~^
      |                                  |
      |                                  double (*)(double) noexcept
a.cc:46:34: error: cannot bind rvalue '(long long int)(y1 + ((sizetype)i))' to 'long long int&'
/usr/include/c++/14/istream:203:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long long unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  203 |       operator>>(unsigned long long& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:203:7: note:   conversion of argument 1 would be ill-formed:
a.cc:46:34: error: invalid conversion from 'double (*)(double) noexcept' to 'long long unsigned int' [-fpermissive]
   46 |         std::cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                              ~~~~^
      |                                  |
      |                                  double (*)(double) noexcept
a.cc:46:34: error: cannot bind rvalue '(long long unsigned int)(y1 + ((sizetype)i))' to 'long long unsigned int&'
/usr/include/c++/14/istream:328:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(void*&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  328 |       operator>>(void*& __p)
      |       ^~~~~~~~
/usr/include/c++/14/istream:328:7: note:   conversion of argument 1 would be ill-formed:
a.cc:46:34: error: invalid conversion from 'double (*)(double) noexcept' to 'void*' [-fpermissive]
   46 |         std::cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                              ~~~~^
      |                                  |
      |                                  double (*)(double) noexcept
a.cc:46:34: error: cannot bind rvalue '(void*)(y1 + ((sizetype)i))' to 'void*&'
/usr/include/c++/14/istream:122:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(__istream_type& (*)(__istream_type&)) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  122 |       operator>>(__istream_type& (*__pf)(__istream_type&))
      |       ^~~~~~~~
/usr/include/c++/14/istream:122:7: note:   conversion of argument 1 would be ill-formed:
a.cc:46:34: error: invalid conversion from 'double (*)(double) noexcept' to 'std::basic_istream<char>::__istream_type& (*)(std::basic_istream<char>::__istream_type&)' {aka 'std::basic_istream<char>& (*)(std::basic_istream<char>&)'} [-fpermiss