#include <iostream>

using namespace std;

int* func1(int* a, int* b, int n, int m)
{
    if ( n == m)
    {
        for (int i = 0; i < m; ++i)
        {
            b[i] = a[i];
        }
    }
    else if (m > n)
    {
        for (int i = m-n; i < m; ++i)
        {
            b[i] = a[i -(m-n)];
        }
    }
    else
    {
        for (int i = n-m; i < n; ++i)
        {
            b[i-(n-m)] = a[i];
        }
    }

    return b;
}

int* func2 (int *b, int m)
{
    for (int i = 0; i < m; ++i)
    {
        if (b[i]) b[i] = 0;
        else b[i] = 1;
    }
    return b;
}
int main()
{
    freopen("input.txt", "r", stdin);
    int m;
    scanf("%d", &m);
    int *a = (int*)calloc(100,sizeof(int));
    int *b = (int*)calloc(m,sizeof(int));
    int i = 0;
    while (cin >> a[i])
    {
        i++;
    }
    b = func1(a,b,i,m);
    b = func2(b,m);
    for (int j = 0; j < m; ++j)
    {
        cout << b[j];
    }
    return 0;
}