#include <bits/stdc++.h>
#define REP(i, n) for (int i = 0; (i) < (int)(n); ++ (i))
using namespace std;

int solve(int64_t p, int64_t q, int64_t a) {
    constexpr int64_t N = 1e9;
    int cnt = 0;
    REP (x, N / 100) {
#pragma unroll 100
        REP (y, 100) {
            cnt += (p * x + p * y / 100 < q * x + q * y / 100 + a);
        }
    }
    cnt -= (p * 0 / 100 < q * 0 / 100 + a);
    cnt += (p * N / 100 < q * N / 100 + a);
    return cnt;
}

int main() {
    int p, q, a; cin >> p >> q >> a;
    cout << solve(p, q, a) << endl;
    return 0;
}