Compilare: main.cpp: In function 'int bs(long long unsigned int, long long unsigned int)': main.cpp:35:8: warning: 'last' may be used uninitialized in this function [-Wmaybe-uninitialized] return last; ^~~~ main.cpp: In function 'int main()': main.cpp:35:8: warning: 'last' may be used uninitialized in this function [-Wmaybe-uninitialized] return last; ^~~~ main.cpp:24:21: note: 'last' was declared here unsigned long long last; ^~~~