#include <iostream>
using namespace std;
int main()
{
    int a = 300;
    int n = 300;
    int arr[13];
    int arr1[12];
    int i = 0;
    int m = 0;
    for (i = 0; i < 12; i++)
    {
        cin >> arr[i];
    }
    int b = 0;
    int sum = 0;
    for (i = 0; i < 12; i++)
    {
        b = a - arr[i];
        if (b >= 100)
        {
            b = b - 100;
            sum += 1;
            if (b >= 100)
            {
                b = b - 100;
                sum += 1;
                if (b >= 100)
                {
                    b = b - 100;
                    sum += 1;
                }
            }
        }
        else if (b < 0)
        {
            for (int j = 0; j < 12; j++)
            {
                arr1[j] = 0 - (i + 1);
            }
            m += 1;
        }
        a = n + b;
    }
    int  c = sum * 120;
    int d = b + c;
    if (m != 0 )
    {
        cout << arr1[0];
    }
    if (m == 0)
    {
        cout << d;
    }
    return 0;
}