#include<bits/stdc++.h>
using namespace std;
int main(){
  int N;
  cin>>N;
  vector<int> A;
  int mm=0;
  int ss=0;
  for (int i=0; i<N; i++){
    int a;
    cin>>a;
    mm=max(mm,a);
    ss+=a;
    A.push_back(a);
  }
  vector<vector<vector<long long>>> dp(N+1,vector<vector<long long>>(mm+1,vector<long long>(ss+1,0)));
  dp[1][A[0]][A[0]]=1;
  dp[0][0][0]=1;
  long long ans=0;
  int thi=A[0];
  for (int i=1; i<N; i++){
    thi+=A[i];
    for (int j=N; j>=1;j--){
      for (int s=thi; s>=A[i]; s--){
        for (int d=0; d<=A[i]; d++){
          dp[j][A[i]][s]+=dp[j-1][d][s-A[i]];
        }
        for (int d=A[i]+1; d<=mm; d++){
          dp[j][d][s]+=dp[j-1][d][s-A[i]];
        }
      }
    }
  }
  for (int j=2; j<=N; j++){
    for (int k=0; k<=mm; k++){
      for (int s=0; s<=ss; s++){
        if ((s%(j-1)==0) && (k<=s/(j-1))){
          ans+=dp[j][k][s];
        }
      }
    }
  }
  cout<<ans<<endl;
}