Menthor Cherry Blossom

// let input = [
//     '7 March 2021', // the input is always a string, so it's '3' and not 3
//     '30',
//     '30',
//     '7'
// ];
let input = [
    '11 March 2021', // the input is always a string, so it's '3' and not 3
    '22',
    '27',
    '35'
];

let print = this.print || console.log;
let gets = this.gets || ((arr, index) => () => arr[index++])(input, 0);

// Input
let expectedDate = gets().split(' ');
let day = +expectedDate[0];
let month = expectedDate[1];
let year = +expectedDate[2];

let averageTemperature = +gets();
let optimalAverageTemperature = 20;

let rain = +gets();
let optimalRain = 30;

let winterLength = +gets();

// Solution
let itsLeapYear = (year % 4 === 0 && year % 100 !== 0) || year % 400 === 0;

if (itsLeapYear) averageTemperature += 5;

day += Math.floor(winterLength / 7);
day -= averageTemperature - optimalAverageTemperature;
day += Math.floor(Math.abs(rain - optimalRain) / 3)

if (day > 31) {
    day -= 31;
    month = "April";
}

if (day < 0) {
    day += 28;
    month = "February";

    if (itsLeapYear) day += 1;
}

// Output
console.log(`${day} ${month} ${year}`);