18 lines
419 B
Rust
18 lines
419 B
Rust
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use std::io;
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fn main() {
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let mut s = String::new();
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io::stdin().read_line(&mut s).unwrap();
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let n = s.trim().parse::<u64>().unwrap();
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let mut p = String::new();
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io::stdin().read_line(&mut p).unwrap();
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let drinks = p.trim().split_whitespace().map(|c| c.parse::<u64>().unwrap()).collect::<Vec<u64>>();
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let conc = drinks.iter().sum::<u64>() as f64 / n as f64;
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println!("{}", conc);
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}
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