Compilare: main.cpp:7:16: warning: suggest parentheses around '+' inside '<<' [-Wparentheses] int arb[nmax<<2+5],n,m,poz; ~^~ main.cpp: In function 'void read(int&)': main.cpp:18:38: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buffer,1,dim,fin),poz=0; ^ main.cpp:23:38: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buffer,1,dim,fin),poz=0; ^