#include <stdio.h>
int main ()
{
int dd[43]={0};
int A;
for (int i=1; i<=10; i++)
{
dd[A%42]=1;
}
int dem = 0;
for (int i=0; i<42; i++)
{
if (dd[i]==1)
dem++;
}
return 0;
}
I2luY2x1ZGUgPHN0ZGlvLmg+CgppbnQgbWFpbiAoKQp7CiAgICBpbnQgZGRbNDNdPXswfTsKICAgIGludCBBOwogICAgZm9yIChpbnQgaT0xOyBpPD0xMDsgaSsrKQogICAgewogICAgICAgIHNjYW5mKCIlZCIsICZBKTsKICAgICAgICBkZFtBJTQyXT0xOwogICAgfQogICAgaW50IGRlbSA9IDA7CiAgICBmb3IgKGludCBpPTA7IGk8NDI7IGkrKykKICAgIHsKICAgICAgICBpZiAoZGRbaV09PTEpCiAgICAgICAgICAgIGRlbSsrOwogICAgfQogICAgcHJpbnRmICgiJWQiLCBkZW0pOwogICAgcmV0dXJuIDA7Cn0=