Compilare: main.cpp: In function 'int main()': main.cpp:55:24: warning: unused variable 'a' [-Wunused-variable] 55 | int n, m, i, x, y, z, a, aux; | ^ main.cpp: In function 'long long int getnr()': main.cpp:51:9: warning: 'nr' may be used uninitialized in this function [-Wmaybe-uninitialized] 51 | return nr; | ^~