#include <bits/stdc++.h>
using namespace std;
template <typename T>
inline void read(T &x) {
  x = 0;
  char c = getchar(), f = 0;
  for (; c < 48 || c > 57; c = getchar())
    if (!(c ^ 45)) f = 1;
  for (; c >= 48 && c <= 57; c = getchar()) x = (x << 1) + (x << 3) + (c ^ 48);
  f ? x = -x : x;
}
const double eps = 1e-10;
int X, K;
double dp[205][205], p, rs = 0;
int main() {
  read(X), read(K), scanf("%lf", &p), p /= 100;
  for (int i = 0; i <= K; i++)
    for (int j = X + i; !(j & 1); j >>= 1, dp[0][i]++)
      ;
  for (int i = 0; i < K; i++)
    for (int j = 0; j <= K; j++)
      (j ? dp[i + 1][j - 1] += dp[i][j] * (1 - p) : p),
          (j * 2 <= K ? dp[i + 1][j * 2] += (dp[i][j] + 1) * p : p);
  return printf("%.10lf\n", dp[K][0]), 0;
}
