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23 lines
496 B
23 lines
496 B
use std::str::FromStr; |
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fn ts(k: usize, s: &String) -> u32 { |
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u32::from_str(s.chars().nth(k).unwrap().to_string().as_str()).unwrap() |
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} |
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fn main() { |
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let mut res = String::from("0"); |
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let mut k = 1usize; |
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while res.len() < 1000001 { |
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res.push_str(k.to_string().as_str()); |
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k += 1; |
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} |
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println!("{}", ts(9, &res)); |
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let mut prod = 1; |
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let mut i = 1; |
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while i <= 1000000 { |
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prod *= ts(i, &res); |
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i *= 10; |
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} |
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println!("{}", prod); |
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}
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