#include <bits/stdc++.h>
using namespace std;

#define rep(i,a,b) for(int i=(int)(a);i<(int)(b);i++)
#define ALL(v) (v).begin(),(v).end()
using ll=long long int;
const int inf = 0x3fffffff; const ll INF = 0x1fffffffffffffff; const double eps=1e-12;
template<typename T>inline bool chmax(T& a,T b){if(a<b){a=b;return 1;}return 0;}
template<typename T>inline bool chmin(T& a,T b){if(a>b){a=b;return 1;}return 0;}

ll dp[65][65][65*65];

int main(){
   string s;
   cin>>s;
   int n=s.size();
   int cnt=0,sum=0;
   rep(i,0,n)if(s[i]=='1'){
      cnt++;
      sum+=i;
   }
   dp[0][0][0]=1;
   rep(i,0,n)rep(j,0,n)rep(s,0,n*n){
      dp[i+1][j][s]+=dp[i][j][s];
      dp[i+1][j+1][s+i]+=dp[i][j][s];
   }
   cout<<dp[n][cnt][sum]<<'\n';
   return 0;
}