param N := 2;

var x{1..N};

minimize f:
x[1];

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

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

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

data;
#var x:=
#1	25000
#2	25000;

solve;

display x;