Probability of Drawing a Heart or a 10

In a standard deck of 52 cards, there are 13 hearts and 4 cards of rank 10. However, note that the 10 of hearts is common to both groups and should only be counted once. Thus, the probability of drawing a card that is either a heart or a 10 is given by the formula \(\frac{13+4-1}{52}\).

The task is to compute this probability and output the result in decimal format with 16 decimal places.

inputFormat

This problem does not require any significant input. However, a dummy input will be provided via stdin, which should be ignored.

outputFormat

Output the probability of drawing a heart or a card of rank 10, computed as \(\frac{13+4-1}{52}\), as a decimal number with exactly 16 decimal places, printed to stdout.

start

0.3076923076923077