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DP水题,可以转化为背包做。

Posted by lydliyudong at 2011-03-25 13:51:04 on Problem 1959
var
 f:array[0..300,0..3]of longint;
 a:array[1..62]of longint;
 n,m,t,i,j,k:longint;
begin
 for i:=1 to 20 do
  for j:=1 to 3 do
   begin inc(k); a[k]:=i*j; end;
 a[k+1]:=25; a[k+2]:=50;
 readln(n);
 for t:=1 to n do
  begin
   readln(m);
   writeln('Scenario #',t,':');
   if m>180 then begin writeln(0); writeln; continue; end;
   fillchar(f,sizeof(f),0);
   f[0,0]:=1;
   for i:=1 to 62 do
    for j:=0 to m do
     for k:=0 to 2 do
      if f[j,k]>0 then
       inc(f[j+a[i],k+1],f[j,k]);
   writeln(f[m,0]+f[m,1]+f[m,2]+f[m,3]);
   if t<>n then writeln;
  end;
end.

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