# include <stdio.h>

int ma

# include 
 int main()
 {
    int n = 0;
    for (n=0; n<20; n++)
    {
      switch(n)
      {
        case 0:
          n += 5;
        case 1:
          n += 2;
        case 5:
          n += 5;
        default:
          n += 4;
          break;
      }
      printf("%d  ", n);
    }
    return 0;
 }

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