equal
  deleted
  inserted
  replaced
  
    
    
     1 write "Input a number ";  | 
     1 write "Input a number ";  | 
     2 read n;  | 
     2 read n;  | 
     3 while n > 1 do { | 
     3 while n > 1 do { | 
     4   if n % 2 == 0   | 
     4   if n % 2 == 0   | 
     5   then n := n/2   | 
     5   then n := n/2   | 
     6   else n := 3*n+1;  | 
     6   else n := 3*n+1  | 
     7 };  | 
     7 };  | 
     8 write "Yes";  | 
     8 write "Yes"  |