1# Optimal code is in fact :
2#
3# for (i=0;i<=M;i+=2) {
4# S1 ;
5# }
6
7# language: C
8c
9
10# parameter n
111 3
12# n 1
131 0 1
140
15
161 # Number of statements
17
181
19# {i, j | i=2*j; 0<=i<=n}
203 5
21# i j n 1
220 1 -2 0 0
231 1 0 0 0
241 -1 0 1 0
250 0 0
260
27
280 # Scattering functions
29