Compilare: user.cpp: In function ‘void reader(int&, std::pair<int, int>&, std::pair<int, int>&, std::pair<int, int>&, std::pair<int, int>&, std::pair<int, int>&, std::vector<std::pair<int, int>, std::allocator<std::pair<int, int> > >&)’: user.cpp:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:35: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:38: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘std::vector<std::vector<int, std::allocator<int> >, std::allocator<std::vector<int, std::allocator<int> > > > generateMap(int, std::vector<std::pair<int, int>, std::allocator<std::pair<int, int> > >, std::pair<int, int>)’: user.cpp:55: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘int findMaxWall(std::vector<std::pair<int, int>, std::allocator<std::pair<int, int> > >)’: user.cpp:78: warning: unused variable ‘n’ user.cpp: In function ‘int main()’: user.cpp:352: warning: comparison between signed and unsigned integer expressions user.cpp:357: warning: comparison between signed and unsigned integer expressions