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Posted on 2009-08-24 20:07 Uriel 閱讀(312) 評論(0) 編輯 收藏 引用 所屬分類: POJ 、 DP
寫得很煩。。貌似是一類經典的DP一次過很開心。。雖然代碼很惡心
  /**//*Problem: 3073 User: Uriel
 Memory: 160K Time: 0MS
 Language: C++ Result: Accepted*/
#include<stdio.h>
#include<string.h>
char a[][5]= {"4","|3","(","|)","3","|=","6","#","|","_|","|<","|_","|\\/|",
"|\\|","0","|0","(,)","|?","5","7","|_|","\\/","\\/\\/","><","-/","2"};
int i,len,dp[450],s;
char spam[450],rsc[200];
int main()
{
while(1)
  {
memset(rsc,0x00,sizeof(rsc));
scanf("%s",rsc);
if(strcmp(rsc,"end")==0)break;
len=strlen(rsc);
memset(spam,0x00,sizeof(spam));
for(i=0;i<len;i++)
{
strcat(&spam[1],a[rsc[i]-'A']);
 }
s=strlen(&spam[1]);
memset(dp,0,sizeof(dp));
dp[0]=1;
for(i=1;i<=s;i++)
{
if(i==1 &&(spam[i]=='4' || spam[i]=='3' || spam[i]=='6' || spam[i]=='#' || spam[i]=='|' || spam[i]=='0' || spam[i]=='5' || spam[i]=='7' || spam[i]=='2' || spam[i]=='('))
{
dp[1]=1;
continue;
}
else if(spam[i]=='4' || spam[i]=='3' || spam[i]=='6' || spam[i]=='#' || spam[i]=='|' || spam[i]=='0' || spam[i]=='5' || spam[i]=='7' || spam[i]=='2' || spam[i]=='(')
{
dp[i]=dp[i-1];
}
else
dp[i]=0;
if((spam[i-1]=='|' && spam[i]=='3')||(spam[i-1]=='|' && spam[i]=='='))
{
dp[i]+=dp[i-2];
}
if((spam[i-1]=='_' && spam[i]=='|')||(spam[i-1]=='|' && spam[i]=='_'))
{
dp[i]+=dp[i-2];
}
if((spam[i-1]=='|' && spam[i]==')')||(spam[i-1]=='|' && spam[i]=='<'))
{
dp[i]+=dp[i-2];
}
if((spam[i-1]=='|' && spam[i]=='0')||(spam[i-1]=='|' && spam[i]=='?'))
{
dp[i]+=dp[i-2];
}
if((spam[i-1]=='\\' && spam[i]=='/')||(spam[i-1]=='-' && spam[i]=='/'))
{
dp[i]+=dp[i-2];
}
if(spam[i-1]=='>' && spam[i]=='<')
{
dp[i]+=dp[i-2];
}
if(i>3 && spam[i-3]=='|' && spam[i-2]=='\\' && spam[i-1]=='/' && spam[i]=='|')
{
dp[i]+=dp[i-4];
}
if(i>3 && spam[i-3]=='\\' && spam[i-2]=='/' && spam[i-1]=='\\' && spam[i]=='/')
{
dp[i]+=dp[i-4];
}
if(i>2 && spam[i-2]=='|' && spam[i-1]=='\\' && spam[i]=='|')
{
dp[i]+=dp[i-3];
}
if(i>2 && spam[i-2]=='(' && spam[i-1]==',' && spam[i]==')')
{
dp[i]+=dp[i-3];
}
if(i>2 && spam[i-2]=='|' && spam[i-1]=='_' && spam[i]=='|')
{
dp[i]+=dp[i-3];
}
}
printf("%d\n",dp[s]);
}
return 0;
}
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