Language: C++

#include <bits/stdc++.h>
#define FOR(i,n) for(int i=0;i<(int)(n);i++)
#define FORR(i,m,n) for(int i=(int)(m);i<(int)(n);i++)
#define pb(a) push_back(a)
#define mp(x,y) make_pair(x,y)
#define ZERO(a) memset(a,0,sizeof(a))
#define len(a) sizeof(a)
#define ll long long
#define pii pair<int,int>
#define INF 1<<29
#define MAX_M 201
#define MAX_N 1111
using namespace std;

int x1[MAX_M],y1[MAX_M],x2[MAX_N],y2[MAX_N];
set<pii> st;
vector<pii> v;

void solve(){
 int m,n;
 for(;;){
  cin>>m;
  if(!m) break;
  FOR(i,m) cin>>x1[i]>>y1[i];
  cin>>n;
  FOR(i,n){
   cin>>x2[i]>>y2[i];
   st.insert(mp(x2[i],y2[i]));
  }
  FORR(i,1,m){
   v.pb(mp(x1[i]-x1[0],y1[i]-y1[0]));
  }
  set<pii>::iterator ite;
  FOR(i,n){
   bool f=true;
   FOR(j,v.size()){
    ite=st.find(mp(v[j].first+x2[i],v[j].second+y2[i]));
    if(ite==st.end()){
     f=false;
     break;
    }
   }
   if(f){
    cout<<(x2[i]-x1[0])<<(y2[i]-y1[0])<<endl;
    break;
   }
  }
 }
}

int main(){
 solve();
 return 0;
}

Compiler output:
a.cc:15:23: error: 'int y1 [201]' redeclared as different kind of entity
   15 | int x1[MAX_M],y1[MAX_M],x2[MAX_N],y2[MAX_N];
      |                       ^
In file included from /usr/include/features.h:523,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/os_defines.h:39,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/c++config.h:683,
                 from /usr/include/c++/14/cassert:43,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:33,
                 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 'void solve()':
a.cc:24:28: warning: pointer to a function used in arithmetic [-Wpointer-arith]
   24 |   FOR(i,m) cin>>x1[i]>>y1[i];
      |                            ^
a.cc:24:22: error: no match for 'operator>>' (operand types are 'std::basic_istream<char>::__istream_type' {aka 'std::basic_istream<char>'} and 'double(double) noexcept')
   24 |   FOR(i,m) cin>>x1[i]>>y1[i];
      |            ~~~~~~~~~~^~~~~~~
      |               |            |
      |               |            double(double) noexcept
      |               std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}
In file included from /usr/include/c++/14/sstream:40,
                 from /usr/include/c++/14/complex:45,
                 from /usr/include/c++/14/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:127:
/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:24:28: error: cannot bind non-const lvalue reference of type 'bool&' to a value of type 'double (*)(double) noexcept'
   24 |   FOR(i,m) cin>>x1[i]>>y1[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:24:28: error: invalid conversion from 'double (*)(double) noexcept' to 'short int' [-fpermissive]
   24 |   FOR(i,m) cin>>x1[i]>>y1[i];
      |                        ~~~~^
      |                            |
      |                            double (*)(double) noexcept
a.cc:24:28: 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:24:28: error: invalid conversion from 'double (*)(double) noexcept' to 'short unsigned int' [-fpermissive]
   24 |   FOR(i,m) cin>>x1[i]>>y1[i];
      |                        ~~~~^
      |                            |
      |                            double (*)(double) noexcept
a.cc:24:28: 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:24:28: error: invalid conversion from 'double (*)(double) noexcept' to 'int' [-fpermissive]
   24 |   FOR(i,m) cin>>x1[i]>>y1[i];
      |                        ~~~~^
      |                            |
      |                            double (*)(double) noexcept
a.cc:24:28: 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:24:28: error: invalid conversion from 'double (*)(double) noexcept' to 'unsigned int' [-fpermissive]
   24 |   FOR(i,m) cin>>x1[i]>>y1[i];
      |                        ~~~~^
      |                            |
      |                            double (*)(double) noexcept
a.cc:24:28: 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:24:28: error: invalid conversion from 'double (*)(double) noexcept' to 'long int' [-fpermissive]
   24 |   FOR(i,m) cin>>x1[i]>>y1[i];
      |                        ~~~~^
      |                            |
      |                            double (*)(double) noexcept
a.cc:24:28: 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:24:28: error: invalid conversion from 'double (*)(double) noexcept' to 'long unsigned int' [-fpermissive]
   24 |   FOR(i,m) cin>>x1[i]>>y1[i];
      |                        ~~~~^
      |                            |
      |                            double (*)(double) noexcept
a.cc:24:28: 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:24:28: error: invalid conversion from 'double (*)(double) noexcept' to 'long long int' [-fpermissive]
   24 |   FOR(i,m) cin>>x1[i]>>y1[i];
      |                        ~~~~^
      |                            |
      |                            double (*)(double) noexcept
a.cc:24:28: 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:24:28: error: invalid conversion from 'double (*)(double) noexcept' to 'long long unsigned int' [-fpermissive]
   24 |   FOR(i,m) cin>>x1[i]>>y1[i];
      |                        ~~~~^
      |                            |
      |                            double (*)(double) noexcept
a.cc:24:28: 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:24:28: error: invalid conversion from 'double (*)(double) noexcept' to 'void*' [-fpermissive]
   24 |   FOR(i,m) cin>>x1[i]>>y1[i];
      |                        ~~~~^
      |                            |
      |                            double (*)(double) noexcept
a.cc:24:28: 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:24:28: 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>&)'} [-fpermissive]
   24 |   FOR(i,m) cin>>x1[i]>>y1[i];
      |                        ~~~~^
      |                            |
      |                            double (*)(double) noexce