Compilare: main.cpp: In function 'int divide(int, int, int)': main.cpp:20:36: warning: suggest parentheses around '-' inside '<<' [-Wparentheses] return divide(n-1,x-(1<<2*n-1),y)+2*(1<<2*n-2); ~~~^~ main.cpp:20:52: warning: suggest parentheses around '-' inside '<<' [-Wparentheses] return divide(n-1,x-(1<<2*n-1),y)+2*(1<<2*n-2); ~~~^~ main.cpp:23:34: warning: suggest parentheses around '-' inside '<<' [-Wparentheses] return divide(n-1,x-(1<<n-1),y-(1<<n-1))+3*(1<<2*n-2); ~^~ main.cpp:23:45: warning: suggest parentheses around '-' inside '<<' [-Wparentheses] return divide(n-1,x-(1<<n-1),y-(1<<n-1))+3*(1<<2*n-2); ~^~ main.cpp:23:59: warning: suggest parentheses around '-' inside '<<' [-Wparentheses] return divide(n-1,x-(1<<n-1),y-(1<<n-1))+3*(1<<2*n-2); ~~~^~ main.cpp:25:1: warning: control reaches end of non-void function [-Wreturn-type] } ^