# include <iostream>

int main () {
    int a[] = {0,1,2,3,4,5,6,7,8,9};
    int *p = a, pos, new_value;
    cin >> pos >> new_value;
    *(p+pos) = new_value;
    for (int i =0; i< 10; i++){
        cout <<  a[i];
    }
    return 0;
}