param N := 30;

var x{1..N};

minimize f:
1 - exp(-1*sum{i in 1..30} x[i]^2/60);

data;
var x:=
1	-1.03
2	1.07
3	-1.10
4	1.13
5	-1.17
6	1.20
7	-1.23
8	1.27
9	-1.30
10	1.33
11	-1.37
12	1.40
13	-1.43
14	1.47
15	-1.50
16	1.53
17	-1.57
18	1.60
19	-1.63
20	1.67
21	-1.70
22	1.73
23	-1.77
24	1.80
25	-1.83
26	1.87
27	-1.90
28	1.93
29	-1.97
30	2.00;


solve;

display x;