#include <stdio.h>

int main(void)
{
  
  int x,y,s,a[1000],b[1000],c[1000],d[1000],e[1000],A[1000],B[1000],i,t,M;
  
  M=0;
  scanf("%d %d %d", &x,&y,&s);
  for(i = 0;i < 1000; i++){
    a[i] = 0;
    b[i] = 0;
    c[i] = 0;
    d[i] = 0;
    e[i] = 0;
    A[i] = 0;
    B[i] = 0;
  }
  x = 100 + x;
  y = 100 + y;
  t = 100 * s;
  for(i = 0;i < s-1; i++){
    a[i] = (i+1) * 100;
    b[i] = t - a[i];
    A[i] = a[i]/100;
    B[i] = b[i]/100;
  }
  for(i = 0;i < s-1; i++){
    if(a[i] % x == 0)
      a[i] = a[i]/x;
    else
      a[i] = (a[i]/x)+1;
    
    if(b[i] % x == 0)
      b[i] = b[i]/x;
    else
      b[i] = (b[i]/x)+1;
    d[i] = a[i];
    e[i] = b[i];
  }
  for(i = 0;i < s-1; i++){
    if(d[i]*x/100 == A[i] && e[i]*x/100 == B[i]){
      a[i] = a[i]*y/100;
      b[i] = b[i]*y/100;
      c[i] = a[i]+b[i];
      if(c[i] > M)
	M = c[i];
    }
  } 
  printf("%d\n", M);
  return 0;
}