param N := 2;

var x{1..N};

minimize f:
(x[1] - 2)^2 + (x[2] - 1)^2;

subject to cons1:
-1*x[1]^2 + x[2] >= 0;

subject to cons2:
x[1] - x[2]^2 >= 0;

data;
var x:=
1	0.5
2	0.5;

solve;

display x;