Compilare: main.cpp: In function 'int main()': main.cpp:74:26: warning: NULL used in arithmetic [-Wpointer-arith] if(cp->info==NULL || x>cp->info) suma--; ^~~~ main.cpp:38:30: warning: unused variable 'y' [-Wunused-variable] long long a, b, suma, x, y, r; ^ main.cpp:38:33: warning: unused variable 'r' [-Wunused-variable] long long a, b, suma, x, y, r; ^ main.cpp:73:17: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized] x=(a*x+b)%nri+1; ~^~