Compilare: user.cpp: In function ‘int main()’: user.cpp:30:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( int i = 1; i <= v.size(); ++i ) ~~^~~~~~~~~~~ user.cpp:25:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%lld", &t ); ^ user.cpp:27:48: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%lld%lld", &n[i], &p[i] ); ^