Datasets:
Tasks:
Text Generation
Modalities:
Text
Formats:
json
Languages:
English
Size:
< 1K
ArXiv:
Tags:
competitive-programming
code-generation
specification-generation
proof-generation
verification
rust
License:
| use vstd::prelude::*; | |
| fn main() {} | |
| verus! { | |
| pub struct Solution; | |
| pub open spec fn count_odds_up_to(n: int) -> int { | |
| (n + 1) / 2 | |
| } | |
| impl Solution { | |
| pub fn count_odds(low: i32, high: i32) -> (res: i32) | |
| requires | |
| 0 <= low <= high <= 1_000_000_000, | |
| ensures | |
| 0 <= res, | |
| res == count_odds_up_to(high as int) - count_odds_up_to(low as int - 1), | |
| { | |
| (high + 1) / 2 - low / 2 | |
| } | |
| } | |
| } | |