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RGB7117 - Тоон үнэлгээнээс үсгэнд

Өгөгдсөн тоон үнэлгээг үсгэн үнэлгээнд шилжүүл.

Input

Тоон үнэлгээ 100-аас ихгүй эерэг бүхэл тоогоор өгөгдөнө.

Output

Тоон үнэлгээ 89-өөс их бол А, 79-өөс их В, 69-өөс их бол С, 59-өөс их бол D бусад тохиолдолд F үсгэн дүнг хэвлэ.

Example

Input:
84

Output:
В

Нэмсэн:Bataa
Огноо:2011-06-20
Хугацааны хязгаарлалт:1s
Эх кодын хэмжээний хязгаарлалт:50000B
Memory limit:1536MB
Cluster: Cube (Intel G860)
Програмчлалын хэлүүд:ADA95 ASM32 BASH BF C NCSHARP CSHARP C++ 4.3.2 CPP C99 CLPS LISP sbcl LISP clisp D ERL FORTRAN HASK ICON ICK JAVA JS-RHINO JULIA LUA NEM NICE OCAML PAS-GPC PAS-FPC PERL PHP PIKE PRLG-swi PYTHON PYPY3 PYTHON3 RUBY SCALA SCM guile ST TCL WHITESPACE

hide comments
2020-10-23 03:41:22
#include <iostream>
using namespace std;
int main(){
int a ;
cin>>a;
if(a>=89){
cout<<"A";
}
else{
if(a>=79){
cout<<"B";
}
else{
if(a<=69){
cout<<"C";

}
else{
cout<<"D";
}
}
}


return 0;
}
2020-10-22 14:20:30
yamaa hii
2020-10-13 13:03:39
yaj bodoh we?


2020-10-08 06:06:03
uugnaa hairtaishuu
2020-08-10 03:53:25
EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
2020-08-07 06:36:05
uurlaad baigaa ym uu
2020-08-07 06:35:53
uuganaaminii and 100g tathaa bolio
2020-08-07 06:35:07
huulhaa boli enkhtuvshiiiiiiiin
2020-08-07 06:34:58
za uuhil uuchil mal uugnaa
2020-08-07 06:34:51
uuutsimu uuganaa
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