14 lines
230 B
Rust
14 lines
230 B
Rust
use std::env;
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fn fib(n: u64) -> u64{
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if n <= 1 {
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n
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} else {
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fib(n-1) + fib(n-2)
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}
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}
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fn main() {
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let args: Vec<String> = env::args().collect();
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println!("{}", fib(args[1].parse().unwrap()));
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}
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