#include #include #include #include #include #include #include using namespace std; using ll = long long; int main() { ll p, q, a; cin >> p >> q >> a; if(p <= q) { cout << 1000000000 << endl; return 0; } int c = 200000000; int ans = 0; for(ll i = 1; i <= c; i++) { if(i * (100 + p) / 100 < i * (100 + q) / 100 + a) ans++; } cout << ans << endl; return 0; }