Compilare: user.cpp: In function ‘void printVec(std::vector<std::pair<int, int>, std::allocator<std::pair<int, int> > >)’: user.cpp:9: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘int main()’: user.cpp:86: warning: comparison between signed and unsigned integer expressions user.cpp:126: warning: comparison between signed and unsigned integer expressions user.cpp:55: warning: unused variable ‘i’ user.cpp:84: warning: unused variable ‘added’ user.cpp:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result