Compilare: user.cpp: In function ‘int z(int, int, int, int, int)’: user.cpp:14:23: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] return 3*(1<<n-1)*(1<<n-1)+z(n-1,midx+1,midy+1,xfn,yfn);//cadranul 3 ^ user.cpp:14:32: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] return 3*(1<<n-1)*(1<<n-1)+z(n-1,midx+1,midy+1,xfn,yfn);//cadranul 3 ^ user.cpp:16:17: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] return (1<<n-1)*(1<<n-1)+z(n-1,xst,midy+1,midx,yfn);// ^ user.cpp:16:26: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] return (1<<n-1)*(1<<n-1)+z(n-1,xst,midy+1,midx,yfn);// ^ user.cpp:18:19: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] return 2*(1<<n-1)*(1<<n-1)+z(n-1,midx+1,yst,xfn,midy); ^ user.cpp:18:28: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] return 2*(1<<n-1)*(1<<n-1)+z(n-1,midx+1,yst,xfn,midy); ^