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  1. #include    <time.h>
  2. #include    <stdlib.h>
  3. #include    <stdio.h>
  4. #include    <math.h>
  5.  
  6. int main ( int argc, char *argv[] )
  7. {
  8.  
  9.   int number_of_steps = 30;
  10.   int repetition = 6500000;
  11.   int distance = 0;
  12.   int total_distance = 0;
  13.   double expected_distance;
  14.   int i, j;
  15.  
  16.   srand(time(NULL));
  17.  
  18.   for ( i = 0; i < repetition; i++ ) {
  19.  
  20.     for ( j = 0; j < number_of_steps; j++) {
  21.       distance += rand() & 1 ? -1 : 1;
  22.     }
  23.  
  24.     total_distance += distance * distance;
  25.     distance = 0;
  26.  
  27.   }
  28.  
  29.   expected_distance = sqrt((float) total_distance / repetition);
  30.  
  31.   printf ( "%g\n", expected_distance );
  32.   return EXIT_SUCCESS;
  33. }       /* ----------  end of function main  ---------- */
Time limit exceeded #stdin #stdout 5s 2244KB
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stdout 
Standard output is empty
https://ideone.com/esfzAI
language:
C (gcc 8.3)
created:
10 years ago
visibility:
public

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