void main(){
  import std.stdio, std.string, std.conv, std.algorithm;

  auto s=readln.chomp.to!(char[]);

  const long mod=1_000_000_000+7;
  long fun(char[] t){
    auto ret=1;
    foreach(i; 0..(t.length/2)){
      if(t[0..(i+1)]==t[($-i-1)..$]){
        (ret+=fun(t[(i+1)..($-i-1)]))%=mod; 
      }
    }
    return ret;
  }

  writeln(fun(s));
}


void rd(T...)(ref T x){
  import std.stdio, std.string, std.conv;
  auto l=readln.split;
  assert(l.length==x.length);
  foreach(i, ref e; x){
    e=l[i].to!(typeof(e));
  }
}