Eroare de compilare: user.cpp:14:19: error: ‘int y1’ redeclared as different kind of symbol int N, M, x1, x2, y1, y2, nr; ^ 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 ‘void build(int, int, int)’: user.cpp:35:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i < A[left].size() && j < A[right].size()) ^ user.cpp:35:55: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i < A[left].size() && j < A[right].size()) ^ user.cpp:49:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(; i < A[left].size(); i ++) ^ user.cpp:53:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(; j < A[right].size(); j ++) ^ user.cpp: In function ‘int main()’: user.cpp:129:13: error: cannot bind ‘std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}’ lvalue to ‘std::basic_istream<char>&&’ fin >> x1 >> y1 >> x2 >> y2; ^ 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:138:38: error: invalid conversion from ‘double (*)(double)throw ()’ to ‘int’ [-fpermissive] query(1, 1, N, x1, y1, x2, y2); ^ user.cpp:61:6: error: initializing argument 5 of ‘void query(int, int, int, int, int, int, int)’ [-fpermissive] void query(int nod, int st, int dr, int x1, int y1, int x2, int y2) ^