#include using namespace std; #define REP(i,a,n) for(int i=(a); i<(int)(n); i++) #define rep(i,n) REP(i,0,n) #define FOR(it,c) for(__typeof((c).begin()) it=(c).begin(); it!=(c).end(); ++it) #define ALLOF(c) (c).begin(), (c).end() typedef long long ll; typedef unsigned long long ull; int main(){ ll P, Q, A; cin >> P >> Q >> A; ll ret = 0; REP(x,1,1000000){ ll X = (1.0 + P/100.0) * x; ll Y = (1.0 + Q/100.0) * x; Y += A; if(X < Y) ret++; } cout << ret << endl; return 0; }