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

int main() {
    int n;
    cin >> n;
    vector<int> steps(n);
    for(int i = 0; i < n; i++) cin >> steps[i];
    long long row = 0;
    long long index = 0;
    for(int i = 0; i < n; i++) {
        int step = steps[i];
        if(step == 0 || step == 1 || step == 2) {
            index = index * 3 + step;
            row++;
        }
        else if(step == 3) {
            index /= 3;
            row--;
        }
        else if(step == 4) {
            index--;
        }
        else if(step == 5) {
            index++;
        }
    }
    cout << row << "\n";
    if(index == 0) cout << 0;
    else{
        string s = "";
        while(index > 0) {
            s = char('0' + (index % 3)) + s;
            index /= 3;
        }
        cout << s;
    }
}