#include <bits/stdc++.h>
inline int gd(int x) {
  int s = 0;
  for (; !(x & 1); x >>= 1) s++;
  return s;
}
double s[201][201];
int main() {
  int x, k, p_i;
  scanf("%d %d %d", &x, &k, &p_i);
  double p = (double)p_i / 100, q = 1 - p;
  for (register int i = 0; i <= k; i++) s[0][i] = gd(x + i);
  for (register int j = 1; j <= k; j++) {
    for (register int i = 0; i <= k; i++) {
      double s0 = 0, qa = 1.0;
      for (register int a = 0; a <= j - 1; a++) {
        if (!((a + i) & 1)) {
          int d = (a + i) >> 1;
          s0 += p * qa * (1 + s[j - 1 - a][d]);
        }
        qa *= q;
      }
      s0 += gd(x + j + i) * qa;
      s[j][i] = s0;
    }
  }
  printf("%0.10f\n", s[k][0]);
  return 0;
}
