Compilare: user.cpp: In function ‘void update(int, int, int, int, int, long long int)’: user.cpp:34:18: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] int mid = st + dr >> 1; ~~~^~~~ user.cpp: In function ‘void dive(int, int, int, long long int)’: user.cpp:56:18: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] int mid = st + dr >> 1; ~~~^~~~