Eroare de compilare: user.cpp:20:11: error: ‘int j1’ redeclared as different kind of symbol int i1,i2,j1,j2; ^ In file included from /usr/include/features.h:346:0, from /usr/local/include/c++/4.8.0/i686-pc-linux-gnu/bits/os_defines.h:39, from /usr/local/include/c++/4.8.0/i686-pc-linux-gnu/bits/c++config.h:420, from /usr/local/include/c++/4.8.0/iosfwd:38, from /usr/local/include/c++/4.8.0/ios:38, from /usr/local/include/c++/4.8.0/istream:38, from /usr/local/include/c++/4.8.0/fstream:38, from user.cpp:1: /usr/include/bits/mathcalls.h:239:1: error: previous declaration of ‘double j1(double)’ __MATHCALL (j1,, (_Mdouble_)); ^ user.cpp: In function ‘int main()’: user.cpp:37:13: error: cannot bind ‘std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}’ lvalue to ‘std::basic_istream<char>&&’ in>>n>>m>>i1>>j1>>i2>>j2; ^ In file included from /usr/local/include/c++/4.8.0/fstream:38:0, from user.cpp:1: /usr/local/include/c++/4.8.0/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:39:19: error: invalid conversion from ‘double (*)(double)throw ()’ to ‘int’ [-fpermissive] for(int j=j1;j<j1+m;j++) { ^ user.cpp:39:27: warning: pointer to a function used in arithmetic [-Wpointer-arith] for(int j=j1;j<j1+m;j++) { ^ user.cpp:39:27: error: ISO C++ forbids comparison between pointer and integer [-fpermissive] user.cpp:47:35: warning: pointer to a function used in arithmetic [-Wpointer-arith] S.push(mp(i1+i,j1+j)); ^ user.cpp:47:37: error: no matching function for call to ‘std::priority_queue<std::pair<int, int>, std::vector<std::pair<int, int> >, cmp>::push(std::pair<int, double (*)(double)throw ()>)’ S.push(mp(i1+i,j1+j)); ^ user.cpp:47:37: note: candidates are: In file included from /usr/local/include/c++/4.8.0/queue:64:0, from user.cpp:2: /usr/local/include/c++/4.8.0/bits/stl_queue.h:496:7: note: void std::priority_queue<_Tp, _Sequence, _Compare>::push(const value_type&) [with _Tp = std::pair<int, int>; _Sequence = std::vector<std::pair<int, int> >; _Compare = cmp; std::priority_queue<_Tp, _Sequence, _Compare>::value_type = std::pair<int, int>] push(const value_type& __x) ^ /usr/local/include/c++/4.8.0/bits/stl_queue.h:496:7: note: no known conversion for argument 1 from ‘std::pair<int, double (*)(double)throw ()>’ to ‘const value_type& {aka const std::pair<int, int>&}’ /usr/local/include/c++/4.8.0/bits/stl_queue.h:504:7: note: void std::priority_queue<_Tp, _Sequence, _Compare>::push(std::priority_queue<_Tp, _Sequence, _Compare>::value_type&&) [with _Tp = std::pair<int, int>; _Sequence = std::vector<std::pair<int, int> >; _Compare = cmp; std::priority_queue<_Tp, _Sequence, _Compare>::value_type = std::pair<int, int>] push(value_type&& __x) ^ /usr/local/include/c++/4.8.0/bits/stl_queue.h:504:7: note: no known conversion for argument 1 from ‘std::pair<int, double (*)(double)throw ()>’ to ‘std::priority_queue<std::pair<int, int>, std::vector<std::pair<int, int> >, cmp>::value_type&& {aka std::pair<int, int>&&}’ user.cpp:58:37: error: invalid operands of types ‘int’ and ‘double(double)throw ()’ to binary ‘operator-’ if(a[p.fi-(i2-i1)][p.se-(j2-j1)]) { ^