OJ-Problems-Source/HDOJ/1508_autoAC.cpp

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#include<iostream>
#include<string>
using namespace std;
int f[100000];
int main()
{
string s;
while(cin>>s&&s!="0")
{
int i;
for(i=0;i<s.size()+1;i++)
f[i]=1;
i=s.size()-1;
while(s[i]=='0')
{
i--;if(i==0)goto end;
i--;if(i==0)goto end;
}
i--;
for(;i>=0;i--)
{
while(s[i]=='0')
{
i--;f[i]=f[i+2];if(i==0)goto end;
i--;f[i]=f[i+1];if(i==0)goto end;
if(s[i]=='0')continue;
i--;
}
if(s[i]<='2')
{
f[i]=f[i+1]+f[i+2];
}
else
{
f[i]=f[i+1];
}
}
end:
cout<<f[0]<<endl;
}
return 0;
}