Compilare: user.cpp: In function ‘void printVec(std::vector<int, std::allocator<int> >)’: user.cpp:9: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void euler(const std::vector<std::vector<std::pair<int, int>, std::allocator<std::pair<int, int> > >, std::allocator<std::vector<std::pair<int, int>, std::allocator<std::pair<int, int> > > > >&, std::vector<int, std::allocator<int> >&, std::vector<int, std::allocator<int> >&, int)’: user.cpp:21: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘int main()’: user.cpp:54: warning: comparison between signed and unsigned integer expressions user.cpp:65: warning: comparison between signed and unsigned integer expressions user.cpp:78: warning: comparison between signed and unsigned integer expressions user.cpp:38: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:45: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result