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#!/usr/local/bin/node
//
// See ../README.md
//
//
// Run as: node ch-1.js < input-file
//
let SUNDAY = 0
let MONDAY = 1
let TUESDAY = 2
let WEDNESDAY = 3
let THURSDAY = 4
let FRIDAY = 5
let SATURDAY = 6
let lookup = [
[261, 260, 260, 261, 261, 261, 261],
[262, 261, 260, 261, 262, 262, 262],
]
function doomsday (year) {
let anchor = [TUESDAY, SUNDAY, FRIDAY, WEDNESDAY]
[Math . floor (year / 100) % 4]
let y = year % 100
let doomsday = ((Math . floor (y / 12) + (y % 12) +
Math . floor ((y % 12) / 4)) + anchor) % 7
return (doomsday)
}
//
// Given a year, return whether it's a leap year or not
//
function is_leap (year) {
return ((year % 400 == 0) || (year % 4 == 0 && year % 100 != 0) ? 1 : 0)
}
require ('readline')
. createInterface ({input: process . stdin})
. on ('line', year => {
console . log (lookup [is_leap (+year)] [doomsday (+year)])
})
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