Compilare: main.cpp: In function 'int main()': main.cpp:8:51: warning: unused variable 'x' [-Wunused-variable] 8 | long long a[4], r[4], n[4], mul[4]={1}, j, i, x, cnt=0, nr, div; | ^ main.cpp:8:61: warning: unused variable 'nr' [-Wunused-variable] 8 | long long a[4], r[4], n[4], mul[4]={1}, j, i, x, cnt=0, nr, div; | ^~ main.cpp:8:65: warning: 'div' may be used uninitialized [-Wmaybe-uninitialized] 8 | long long a[4], r[4], n[4], mul[4]={1}, j, i, x, cnt=0, nr, div; | ^~~