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题目解答

题目:
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:8910
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