Compilare: main.cpp: In function 'int main()': main.cpp:56:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<div.size();i++){ ~^~~~~~~~~~~ main.cpp:32:12: warning: variable 'lim' set but not used [-Wunused-but-set-variable] int i, lim, expo, phi, cop, prim, doi, cop2, x, cn; ^~~ main.cpp:32:28: warning: unused variable 'cop' [-Wunused-variable] int i, lim, expo, phi, cop, prim, doi, cop2, x, cn; ^~~ main.cpp:32:33: warning: unused variable 'prim' [-Wunused-variable] int i, lim, expo, phi, cop, prim, doi, cop2, x, cn; ^~~~ main.cpp:32:39: warning: unused variable 'doi' [-Wunused-variable] int i, lim, expo, phi, cop, prim, doi, cop2, x, cn; ^~~ main.cpp:32:44: warning: unused variable 'cop2' [-Wunused-variable] int i, lim, expo, phi, cop, prim, doi, cop2, x, cn; ^~~~ main.cpp:40:35: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%lld%lld", &a, &n); ^