Submission #1799400

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Source Code Expand

use std::io::*;
use std::str::*;

const MOD: i32 = 1000000007;

fn read<T: FromStr>() -> Option<T> {
    let stdin = stdin();
    let s = stdin
        .bytes()
        .map(|c| c.unwrap() as char)
        .take_while(|c| !c.is_whitespace())
        .collect::<String>();
    s.parse::<T>().ok()
}

fn main() {
    let n: u64 = read().unwrap();
    let a: u64 = read().unwrap();
    let b: u64 = read().unwrap();

    if a > b {
        println!("{}", 0);
        return;
    }

    if n == 1 {
        if a == b {
            println!("{}", 1);
        } else {
            println!("{}", 0);
        }
        return;
    }

    println!("{}", b * (n - 2) - a * (n - 2) + 1);
}

Submission Info

Compile Error

warning: constant item is never used: `MOD`, #[warn(dead_code)] on by default
 --> ./Main.rs:4:1
  |
4 | const MOD: i32 = 1000000007;
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Judge Result