Eroare de compilare: user.cpp:19:31: error: ‘int y1 [1005]’ redeclared as different kind of symbol int N, M, K, x1[1005], y1[1005], x2[1005], y2[1005], p, sol, lmax, lin[1505], col[1505], a[1505][1505]; ^ In file included from /usr/include/features.h:357:0, from /usr/include/i386-linux-gnu/c++/4.8/bits/os_defines.h:39, from /usr/include/i386-linux-gnu/c++/4.8/bits/c++config.h:420, from /usr/include/c++/4.8/iosfwd:38, from /usr/include/c++/4.8/ios:38, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/fstream:38, from user.cpp:1: /usr/include/i386-linux-gnu/bits/mathcalls.h:243:1: error: previous declaration of ‘double y1(double)’ __MATHCALL (y1,, (_Mdouble_)); ^ user.cpp: In function ‘int main()’: user.cpp:28:27: warning: pointer to a function used in arithmetic [-Wpointer-arith] f>>x1[i]>>y1[i]>>x2[i]>>y2[i]; ^ user.cpp:28:14: error: cannot bind ‘std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}’ lvalue to ‘std::basic_istream<char>&&’ f>>x1[i]>>y1[i]>>x2[i]>>y2[i]; ^ In file included from /usr/include/c++/4.8/fstream:38:0, from user.cpp:1: /usr/include/c++/4.8/istream:872:5: error: initializing argument 1 of ‘std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&&, _Tp&) [with _CharT = char; _Traits = std::char_traits<char>; _Tp = double(double)throw ()]’ operator>>(basic_istream<_CharT, _Traits>&& __is, _Tp& __x) ^ user.cpp:29:51: warning: pointer to a function used in arithmetic [-Wpointer-arith] int l1=abs(x1[i]-x2[i])+1, l2=abs(y1[i]-y2[i])+1; ^ user.cpp:29:57: warning: pointer to a function used in arithmetic [-Wpointer-arith] int l1=abs(x1[i]-x2[i])+1, l2=abs(y1[i]-y2[i])+1; ^ user.cpp:29:58: error: call of overloaded ‘abs(double (*)(double)throw ())’ is ambiguous int l1=abs(x1[i]-x2[i])+1, l2=abs(y1[i]-y2[i])+1; ^ user.cpp:29:58: note: candidates are: In file included from /usr/include/c++/4.8/cstdlib:72:0, from /usr/include/c++/4.8/ext/string_conversions.h:41, from /usr/include/c++/4.8/bits/basic_string.h:2815, from /usr/include/c++/4.8/string:52, from /usr/include/c++/4.8/bits/locale_classes.h:40, from /usr/include/c++/4.8/bits/ios_base.h:41, from /usr/include/c++/4.8/ios:42, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/fstream:38, from user.cpp:1: /usr/include/stdlib.h:771:12: note: int abs(int) <near match> extern int abs (int __x) __THROW __attribute__ ((__const__)) __wur; ^ /usr/include/stdlib.h:771:12: note: no known conversion for argument 1 from ‘double (*)(double)throw ()’ to ‘int’