Problem: Valera is a coder. Recently he wrote a funny program. The pseudo code for this program is given below:
    
    
      
    //input: integers x, k, p  
    a = x;  
    for(step = 1; step <= k; step = step + 1){  
        rnd = [random integer from 1 to 100];  
        if(rnd <= p)  
            a = a * 2;  
        else  
            a = a + 1;  
    }  
      
    s = 0;  
      
    while(remainder after dividing a by 2 equals 0){  
        a = a / 2;  
        s = s + 1;  
    }  
      
    

Now Valera wonders: given the values x, k and p, what is the expected value of the resulting number s?

Input

The first line of the input contains three integers x, k, p (1 ≤ x ≤ 109; 1 ≤ k ≤ 200; 0 ≤ p ≤ 100).

Output

Print the required expected value. Your answer will be considered correct if the absolute or relative error doesn't exceed 10 - 6.

Examples

Input

1 1 50


Output

1.0000000000000


Input

5 3 0


Output

3.0000000000000


Input

5 3 25


Output

1.9218750000000

Note

If the concept of expected value is new to you, you can read about it by the link: 

http://en.wikipedia.org/wiki/Expected_value

Solution (in CPP):

Solution:
#include <bits/stdc++.h>
using namespace std;
inline int read() {
  int n = 0;
  bool b = 0;
  char c = getchar();
  while (c < '0' || c > '9') {
    if (c == '-') b = 1;
    c = getchar();
  }
  while (c >= '0' && c <= '9')
    n = (n << 3) + (n << 1) + (c ^ 48), c = getchar();
  return b ? -n : n;
}
int x, k;
double p, p1;
const int N = 5e2 + 7;
double f[N][N];
int main() {
  x = read(), k = read();
  scanf("%lf", &p);
  p /= 100, p1 = 1.0 - p;
  for (int i = 0; i <= k; i++)
    for (int j = x + i; j % 2 == 0; j /= 2) f[0][i]++;
  for (int i = 0; i < k; i++)
    for (int j = 0; j <= k; j++) {
      if (j) f[i + 1][j - 1] += p1 * f[i][j];
      if (j * 2 <= k) f[i + 1][j * 2] += p * (f[i][j] + 1);
    }
  printf("%.10f\n", f[k][0]);
  return 0;
}