Compilare: user.cpp: In function ‘void inst(int)’: user.cpp:10:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < H[x%MOD].size();i++) ^ user.cpp: In function ‘int cauta(int)’: user.cpp:23:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < H[x%MOD].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:30:23: warning: unused variable ‘mod’ [-Wunused-variable] int a,b,c,d,e,n,m,mod,x,s = 0; ^