Compilare: main.cpp: In function 'int main()': main.cpp:16:31: warning: unused variable 'i' [-Wunused-variable] 16 | unsigned long long int n, i, perechi, rez=1, k, x; | ^ main.cpp:16:34: warning: variable 'perechi' set but not used [-Wunused-but-set-variable] 16 | unsigned long long int n, i, perechi, rez=1, k, x; | ^~~~~~~ main.cpp:16:50: warning: unused variable 'k' [-Wunused-variable] 16 | unsigned long long int n, i, perechi, rez=1, k, x; | ^ main.cpp:16:53: warning: unused variable 'x' [-Wunused-variable] 16 | unsigned long long int n, i, perechi, rez=1, k, x; | ^