Program summa; var <span> i, sum: integer;</span> begin<span> sum := 0; </span><span> i := 1;</span><span> repeat</span><span> begin</span><span> sum := sum + sin(2*i) + i/2; </span><span> i := i+1;</span><span> until i = 21; </span><span> writeln(sum); </span><span>end.</span>