#include <cstdio>
#include <cstdlib>
#include <ctime>

int sz[52] = { 0, 2, 4, 5, 6, 7, 8, 9 ,10, 11, 12, 15, 17, 18, 20, 25, 27, 28, 29, 30, 33, 32, 34, 37, 38, 42, 46, 47, 48, 49, 50};

int main()
{
    int st, ed, r = 1, c = 3;
    char in[110], out[110];
    scanf("%d%d", &st, &ed);
    srand(time(NULL));
    for(int i = st ; i <= ed ; i++ )
    {
        sprintf(in, ".%d.in", i);
        freopen(in, "w", stdout);
        printf("%d\n", sz[i]);
    }
}