You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
49 lines
623 B
49 lines
623 B
7 months ago
|
define fast_gcd(a, b) {
|
||
|
|
|
||
|
|
if (a == b) return a;
|
||
|
|
if (a > b) return fast_gcd(a - b, b)
|
||
|
|
|
||
|
|
return fast_gcd(a, b - a);
|
||
|
|
}
|
||
|
|
|
||
|
|
define void r_reduce(*r[]) {
|
||
|
|
|
||
|
|
auto g,s;
|
||
|
|
|
||
|
|
if (length(r[]) != 2) sqrt(-1);
|
||
|
|
if (scale(r[0])) 2^r[0];
|
||
|
|
if (scale(r[1])) 2^r[1];
|
||
|
|
|
||
|
|
if (r[0] >= 0 && r[1] >= 0) g = fast_gcd(r[0], r[1]);
|
||
|
|
else g = gcd(r[0], r[1]);
|
||
|
|
|
||
|
|
s = scale;
|
||
|
|
scale = 0;
|
||
|
|
|
||
|
|
r[0] /= g;
|
||
|
|
r[1] /= g;
|
||
|
|
|
||
|
|
scale = s;
|
||
|
|
}
|
||
|
|
|
||
|
|
define void r_init(*r[], a, b) {
|
||
|
|
r[0] = a;
|
||
|
|
r[1] = b;
|
||
|
|
r_reduce(r[]);
|
||
|
|
}
|
||
|
|
|
||
|
|
define void r_initi(*r[], i, a, b) {
|
||
|
|
|
||
|
|
length(r[]);
|
||
|
|
|
||
|
|
r[0] = i * b + a;
|
||
|
|
r[1] = b;
|
||
|
|
|
||
|
|
length(r[]);
|
||
|
|
|
||
|
|
r_reduce(r[]);
|
||
|
|
}
|
||
|
|
|
||
|
|
length(a[])
|
||
|
|
r_initi(a[], 5, 63, 94);
|