function f(n:int){ int[] a = new int[2]; a[0] = a[1] = 1; int i =1 ; while(true){ i = (i + 1)%2 a[i] = ______ If(a[i] > n){ return a[i] } } }
a[i] + a[i + 1]
a[i % 2] + a[(i+1)%2]
a[i] + a[i -1]
a[i%2] + a[(i-1)%2]
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