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Problem E
Elo Rating

Accepted submissions to this problem will be granted a score of 100

In chess, players are rated using the Elo system. The system is designed such that if a player has 100 more Elo than the opponent, then the player will win 64% of the time. Elo rankings can be split into multiple categories.

A super grandmaster has $\geq 2700$ Elo.
A grandmaster has $\geq 2500$ Elo.
A international grandmaster has $\geq 2400$ Elo.
Let’s call a chess player with $< 2400$ Elo amateur.

Ratings are considered valid if they are $> 999$ .
Write a program that reads in a chess Elo rating and prints Super grandmaster, Grandmaster, International grandmaster, Amateur or Invalid depending on the input.

Input

Input consists of one line containing one integer $r a t i n g$ , where $- 10^{6} \leq r a t i n g \leq 10^{6}$ .

Output

Output consists of one line, the Elo category.

Sample Input 1	Sample Output 1
1	Invalid

Sample Input 2	Sample Output 2
1000	Amateur

Sample Input 3	Sample Output 3
2401	International grandmaster

Sample Input 4	Sample Output 4
2600	Grandmaster

Sample Input 5	Sample Output 5
2800	Super grandmaster

Attachments

starter_code.py tests.py

Problem EElo Rating

Input

Output

Problem E
Elo Rating