Compilare: main.cpp: In function 'bool verif(int)': main.cpp:18:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<v[hasu].size(); i++) ~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:32:11: warning: unused variable 'm' [-Wunused-variable] int n,m,x,op,nr,rez,aux; ^ main.cpp:32:18: warning: 'nr' may be used uninitialized in this function [-Wmaybe-uninitialized] int n,m,x,op,nr,rez,aux; ^~ main.cpp:52:25: warning: 'aux' may be used uninitialized in this function [-Wmaybe-uninitialized] v[nr][p]=aux;