#include using namespace std; using ll = long long; const ll MAX = 1e9; int main() { ios::sync_with_stdio(false), cin.tie(0); int P, Q, A; cin >> P >> Q >> A; if (A == 0) { if (P >= Q) { cout << 0 << endl; return 0; } int cnt = 0; for (ll i = 1; i <= 100; i++) { cnt += (Q * i / 100 > P * i / 100); } cout << cnt << endl; return 0; } if (P == Q) { if (A == 0) { cout << 0 << endl; return 0; } cout << MAX << endl; return 0; } if (P < Q) { cout << MAX << endl; return 0; } int cnt = 0; for (ll i = 1; i <= 100000000; i++) { cnt += (Q * i / 100 + A > P * i / 100); } cout << cnt << endl; return 0; }