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  1. #include <bits/stdc++.h>
  2.  
  3. long double prob[120][70];
  4.  
  5. int main()
  6. {
  7. 	prob[0][0]=1;
  8. 	for(int i=1; i<=110; ++i){
  9.         for(int j=1; j<=64; ++j){
  10.             prob[i][j] = prob[i-1][j-1] * (1. - pow(2., j-1)*1./pow(2., 64)) +
  11.                          prob[i-1][j] * (pow(2., j)*1.0 / pow(2., 64));
  12.         }
  13. 	}
  14. 	printf("%.100Lf\n", pow(prob[110][64], 1000));
  15.     return 0;
  16. }
  17.  
Success #stdin #stdout 0s 16176KB
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stdin
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Standard input is empty
stdout
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0.9999999999999716892044518412596687539917184039950370788574218750000000000000000000000000000000000000
https://ideone.com/JMVO8Q
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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