#include<stdio.h>

int main()
{
  short x,y;
  int s,i,a,b,max;
  int n,m,p,q,r;

  while(1){
    max = 0;
    scanf("%hd %hd %d",&x,&y,&s);

    if(x == 0 && y == 0 && s == 0){
      break;
    }

    for(i = 1;i <= s/2;i++){
      n = i * (100+x) / 100;
      m = s - n;
      p = m * 100 / (100+x);

      while(1){
        p++;
        q = p * (100+x) / 100;

        if(n + q != s){
          p--;
          break;
        }
      }

      r = p * (100+x) / 100;

      if(n + r == s){
        a = i * (100+y) / 100;
        b = p * (100+y) / 100;
        if(a+b > max){
          max = a + b;
        }
      }
    }

    printf("%d\n",max);
  }

  return 0;
}