编程题

program Program3;

  Var

   a,b,c,d,sum:longint;

  begin

   read (a,b,c,d);

   a:=a mod 23:

   b:=b mod 28;

   c:=c mod 33;

   sum:=a*5544+b* 14421+c*1288-d;

   sum:=sum+21252;

   sum:=sum mod 21252;

   if (sum=0)then

    sum:=21252;

   writeln(sum);

  end. 

输入:283 102 23 320 输出: 

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