Compilare: main.cpp: In function 'int main()': main.cpp:30:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( i = 0; i < v.size(); i++ ) ~~^~~~~~~~~~ main.cpp:15:30: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%lld", &b ); ^