记录编号	12751	评测结果	AAAAAAAAAA
题目名称	字符串的距离	最终得分	100
用户昵称	Achilles	是否通过	通过
代码语言	Pascal	运行时间	0.684 s
提交时间	2009-09-20 12:08:41	内存使用	15.39 MiB

program blast;
var a,b:array[0..2000] of char;
    f:array[0..2000,0..2000] of longint;
    n,la,lb,i,j,cost:longint;
begin
assign(input,'blast.in'); 
assign(output,'blast.out');
reset(input); 
rewrite(output);
la:=0; lb:=0;
while not eoln do begin inc(la); read(a[la]); end; readln;
while not eoln do begin inc(lb); read(b[lb]); end; readln;
readln(cost);
fillchar(f,sizeof(f),100);
for i:=0 to la do f[i,0]:=i*cost;
for i:=0 to lb do f[0,i]:=i*cost;
for i:=1 to la do
    for j:=1 to lb do
    begin
      f[i,j]:=f[i-1,j-1]+abs(ord(a[i])-ord(b[j]));
      if f[i,j]>f[i-1,j]+cost then f[i,j]:=f[i-1,j]+cost;
      if f[i,j]>f[i,j-1]+cost then f[i,j]:=f[i,j-1]+cost;
    end;
writeln(f[la,lb]);
close(input); 
close(output);
end.