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  1. program ideone;
  2. var
  3. a,b : integer;
  4. S,x : real;
  5. begin
  6. writeln('a,b,x=?');
  7. readln(a,b,x);
  8. S:=((3/4*160-b)*1/2*x)+((1/4*160-a)*x);
  9. writeln('S=',S:0:2);
  10. end.
Success #stdin #stdout 0s 4372KB
stdin
12
3
25743

stdout
a,b,x=?
S=2226769.50