'use strict'

const main = input => {
	const args = input.split('\n').map(arg => arg.split(' '))
	const s = args[0].slice(0, 2)
	const tmp = [false, false]

	for (let i = 0; i < 2; i++) {
		if (s[i] === 'Sat' || s[i] === 'Sun') tmp[i] = true
	}

	if (tmp[0] && tmp[1]) console.log('8/33')
	else if (tmp[0]) console.log('8/32')
	else console.log('8/31')
}

main(require('fs').readFileSync('/dev/stdin', 'utf8'))