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/* Any copyright is dedicated to the Public Domain.
* http://creativecommons.org/publicdomain/zero/1.0/ */
void swap(int* a, int* b) {
int t = *a;
*a = *b;
*b = t;
}
int fib(int n) {
int i, t, a = 0, b = 1;
for (i = 0; i < n; i++) {
a += b;
swap(&a, &b);
}
return b;
}
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