use std::io::Read;
use std::cmp::{min, max};

fn eat(x: isize, p: isize) -> isize {
    (100+p) * x / 100
}

fn takeout(x: isize, q: isize, a: isize) -> isize {
    (100+q) * x / 100 + a
}

fn main() {
    let mut pqa = String::new();
    std::io::stdin().read_to_string(&mut pqa).ok();
    let pqa: Vec<isize> = pqa.trim().split('\n').next().unwrap().trim().split_whitespace().map(|i| i.parse::<isize>().unwrap()).collect();
    let p = pqa[0];
    let q = pqa[1];
    let a = pqa[2];
    if p == q {
        println!("{}", if a == 0 { 10i32.pow(9) } else { 0 });
    } else if q >= p {
        println!("{}", 0);
    } else {
        let mut switched_idx: isize = 0;
        for i in 0..100_000 {
            let start: isize = i * 10_000 + 1;
            let end: isize = (i+1) * 10_000;
            if (eat(start, p) - takeout(start, q, a)) * (eat(end, p) - takeout(end, q, a)) <= 0 {
                switched_idx = i;
                break;
            }
        }
        let mut result = 0;
        for i in max(0, switched_idx-1)..=min(100_000-1, switched_idx+1) {
            for j in 0..10_000 {
                result += if eat(i*10_000+j+1, p) < takeout(i*10_000+j+1, q, a) { 1 } else { 0 };
            }
        }
        if p > q {
            println!("{}", result + max(0, switched_idx-1) * 10_000);
        } else {
            println!("{}", result + min(100_000-1, switched_idx+1) * 10_000);
        }
    }
}