• محدودیت زمان: ۱ ثانیه
• محدودیت حافظه: ۲۵۶ مگابایت

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Our planet Earth has got two significant movements which are called Earth’s rotation and Earth’s revolution. Earth rotates along its own axis every day, which is why this movement is called the Earth’s Rotation. Furthermore, the movement of earth around the sun is called the Earth’s revolution which takes one year to complete.

The Earth’s movement trajectory around the Sun, which is called orbit, is not a perfect circle. According to the observations, the Earth’s orbit is elliptical which means that our distance from the Sun varies by day.

There is a common misbelief that the seasons appear as a consequence of the Earth’s varying distance from the Sun. This hypothesis can be simply rejected by the fact that we can observe different seasons in different countries at the same time. For example, people in France celebrate the Christmas in the cold and snowy weather, but people in Australia celebrate the Christmas by the beach!

Earth’s rotation movement is the reason to the climate change and the seasons. It will affect the northern and southern hemisphere differently. For example, in Australia spring consists of September, October, and November. Summer which is hottest season of the year includes December, January, and February. Autumn comprises March, April, and May. And finally, winter consists of June, July, and August. In this problem you are asked to write a program to calculate the season in Australia based on the given month.

ورودی

The input contains a string which is the name of the given month written in lowercase English letters.

خروجی

Print the season which contains the given month in lowercase English letters.

مثال‌ها

ورودی نمونه ۱

january

خروجی نمونه ۱

summer

ورودی نمونه ۲

september

خروجی نمونه ۲

spring