#include<iostream>
using namespace std;
short bag[114514];
int cnt=0;
int main(){
    int n;
    cin>>n;
    for(int i=0;i<n;i++){
        cin>>bag[i];
        if(bag[i]==1){
            cout<<i<<" ";
        }else if(bag[i]==0){
            cnt++;
        }
    }
    cout<<cnt;
    
    return 0;
}