Compilare: user.cpp: In function ‘int dist(int, int, int)’: user.cpp:14:21: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] if(x <= (1 << k - 1)) { ^ user.cpp:15:25: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] if(y <= (1 << k - 1)) { ^ user.cpp:21:25: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] if(y <= (1 << k - 1)) { ^ user.cpp:22:40: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] return dist(k - 1, (1 << k - 1) - y + 1, (1 << k) - x + 1) + (size[k - 1] + 1) * 3; ^