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acodefinal.cpp
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acodefinal.cpp
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#include<bits/stdc++.h>
using namespace std;
int convint(int a)
{
int p=a-'0';
return p;
}
int main(void)
{
string s;
while(cin>>s)
{
int len=s.length(),z[len+1],flag=0,i;
if(len==1&&s[len-1]=='0')
{
flag=1;
}
else if(len==1)
{
cout<<"1\n";
flag=1;
}
else if(s[0]=='0')
{
cout<<"0\n";
flag=1;
}
else if(s[len-1]=='0'&&s[len-2]=='0')
{
cout<<"0\n";
flag=1;
}
else
{
z[len]=1;
if(s[len-1]!='0')
z[len-1]=1;
else
z[len-1]=0;
for(i=len-2;i>=0;i--)
{
if(s[i]=='0'&&s[i-1]=='0')
{
cout<<"0\n";
flag=1;
break;
}
else
{
if(s[i]=='0'/*&&convint(s[i-1])>2*/)
z[i]=0; //a string cannot start with 0
else
{
if(convint(s[i])==2)
{
if(convint(s[i+1])<7)
z[i]=z[i+1]+z[i+2];
else
z[i]=z[i+1];
}
else if(convint(s[i])<2)
{
z[i]=z[i+1]+z[i+2];
}
else
{
z[i]=z[i+1];
}
}
}
}
/* for(int i=0;i<=len;i++)
cout<<z[i]<<" ";*/
if(flag==0)
cout<<z[0]<<"\n";
}
}
return 0;
}