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

#define N 1000
#define MAX(A,B) ((A) < (B) ? (B) : (A))

static int x;
static int y;
static int s;

int main(int argc, char *argv[]) {
  int i, j;

  for (;;) {
    int res = 0;

    scanf("%d%d%d", &x, &y, &s);
    if (x == 0 && y == 0 && s == 0) {
      break ;
    }
    x += 100;
    y += 100;

    for (i = 1; i < N; ++i)
    for (j = 1; j < N; ++j) {
      if (i * x / 100 + j * x / 100 == s) {
	res = MAX(res, i * y / 100 + j * y / 100);
      }
    }

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

  return (EXIT_SUCCESS);
}