Compilare: main.cpp: In function 'int main()': main.cpp:84:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<prim.size();i++){ ~^~~~~~~~~~~~ main.cpp: In function 'void solve()': main.cpp:28:27: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&n,&g); ^ main.cpp:33:24: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&x); ^ main.cpp: In function 'int main()': main.cpp:89:24: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&t); ^