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-rw-r--r--euler2.scm10
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diff --git a/euler2.scm b/euler2.scm
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+++ b/euler2.scm
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+(define (sum-fib sum a b c)
+ (if (> a 4000000)
+ sum
+ (if (even? a)
+ (sum-fib (+ sum a) b c (+ b c))
+ (sum-fib sum b c (+ b c)))))
+
+(display (sum-fib 0 1 2 3))
+(newline)
+