#include <bits/stdc++.h>

using namespace std;

int main() {
    int n, a, day = 0, unday = 0, point = 0, sum = 0;//point是当前每天要加的活跃值，sum是活跃值总和
    cin >> n;
    for (int i = 1; i <= n; i++) {
        cin >> a;
        if (a == 1)//如果当天打了卡
        {
            if (unday > 0) {//如果在这天之前有连续没打卡天数
                day -= pow(2, unday - 1);//如上
                if (day < 0) day = 0;//处理负数情况
            }
            unday = 0;//连续没打卡天数清零
            day++;//连续打卡天数累加
            if (day >= 1 && day < 3) point = 1;//如上的活跃值奖励判断
            if (day >= 3 && day < 7) point = 2;
            if (day >= 7 && day < 30) point = 3;
            if (day >= 30 && day < 120) point = 4;
            if (day >= 120 && day < 365) point = 5;
            if (day >= 365) point = 6;
            sum += point;//累计活跃值总和
        } else unday++;//如果当天没打卡，连续没打卡天数累加
    }
    cout << sum;//输出总和
    return 0;//结束程序
}