#include <bits/stdc++.h>
using namespace std;
double p, f[320][320];
int x, k, P;
template <class I>
inline void read(I &s) {
  char c = getchar();
  for (; !isdigit(c); c = getchar())
    ;
  for (s = 0; isdigit(c); c = getchar()) s = (s << 3) + (s << 1) + c - 48;
}
int main() {
  read(x), read(k), read(P);
  p = P / 100.0;
  for (int i = 0; i <= k; i++) {
    int s = x + i;
    while (s % 2 == 0) s /= 2, f[0][i]++;
  }
  for (int i = -1; ++i <= k;) {
    for (int j = -1; ++j <= k;) {
      if (j) f[i + 1][j - 1] += (double)(1 - p) * f[i][j];
      if (j * 2 <= k) f[i + 1][j * 2] += (double)p * (f[i][j] + 1);
    }
  }
  printf("%.10lf", f[k][0]);
}
