Compilare: main.cpp: In function 'int_fast64_t cauta(int_fast64_t)': main.cpp:94:12: warning: 'answ' may be used uninitialized in this function [-Wmaybe-uninitialized] return answ; ^~~~ main.cpp: In function 'int main()': main.cpp:80:28: warning: 'answ' may be used uninitialized in this function [-Wmaybe-uninitialized] int_fast64_t st=1,dr=n,answ; ^~~~