#include <stdio.h>
#include <stdlib.h>


int after_tax(int value, int tax) {
  return value * (100 + tax) / 100;
}

int main(int argc, char *argv[])
{
  int tax_1, tax_2, a, b, sum;
 
  int d = 0;
  
  while(!feof(stdin)) {
    fscanf(stdin, "%d", &d);
    tax_1 = d;
    fscanf(stdin, "%d", &d);
    tax_2 = d;
    fscanf(stdin, "%d", &d);
    sum = d;

    int current_max = 0;
    int tax1_sum;
    int tax2_sum;
    for (a = 1; a < sum; a++) {
      for (b = 1; b < sum; b++) {
	if (a == b) continue;
	tax1_sum = after_tax(a, tax_1) + after_tax(b, tax_1);
	if (tax1_sum == sum) {
	  tax2_sum = after_tax(a, tax_2) + after_tax(b, tax_2);
	  if (tax2_sum > current_max) current_max = tax2_sum;
	}
      }
    }
    printf("%d\n", current_max);
  }
  return 0;
}