module lastrow(part,cin,s,cout);
	/* Last row of adders with full carry chain. */
    input [2:0] part;
    input [2:0] cin;
    output [2:0] s;
    output cout;
    wire [1:0] carry;
 
   assign {carry[0],s[0]} = part[0] + cin[0];
   assign {carry[1],s[1]} = part[1] + cin[1] + carry[0];
   assign {cout,s[2]} = part[2] + cin[2] + carry[1];
endmodule