param N := 2;

var x{1..N};

minimize f:
-1*x[1];

subject to cons1:
0.125 + (1 - x[1])^3 - x[2] >= 0;

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

subject to cons3:
x[2] >= 0;

data;
var x:=
1	1.3
2	0.2;

solve;

display x;