#include <iostream>
using namespace std;


int tax(int x, int s)
{
  return s * (100 + x) / 100;
}
int solve(int x, int y, int s)
{
  int maximum = 0;
  for(int i=1; i<s; i++){
    for(int j=i; j<s; j++){
      if(tax(x, i) + tax(x, j) == s){
        maximum = max(maximum, tax(y, i) + tax(y,j));
      }
    }
  }
  return maximum;
}

int main(){
  int x, y, s;
  while(cin >> x >> y >> s && x >0){
    cout << solve(x, y, s) << endl;
  }
  return 0;
}

