import java.util.Scanner;

public class Exer

int$[]$ scores $=$ new int$[$numOfStudents$]$;

System.out.print$("$Enter $"+$ numOfStudents $+"$ scores: $")$;

for $($int i $=0$; i $<$ numOfStudents; i$++)\{$

scores$[$i$]=$ input.nextInt$()$;

$\}$

int bestScore $=$ findBestScore$($scores$)$;

for $($int i $=0$; i $<$ scores.length; i$++)\{$

System.out.print$("$Student $"+$ i $+"$ score is $"+$ scores$[$i$]+"$ and grade is $")$;

printGrade$($scores$[$i$],$ bestScore$)$;

$\}$

input.close$()$;

$\}$

public static int findBestScore$($int$[]$ scores$)\{$

int best $=$ scores$[0]$;

for $($int score : scores$)\{$

if $($score $>$ best$)\{$

best $=$ score;

$\}$

$\}$

return best;

$\}$

public static void printGrade$($int score, int best$)\{$

if $($score $>=$ best $-10)\{$

System.out.println$("$A$")$;

$\}$ else if $($score $>=$ best $-20)\{$

System.out.println$("$B$")$;

$\}$ else if $($score $>=$ best $-30)\{$

System.out.println$("$C$")$;

$\}$ else if $($score $>=$ best $-40)\{$

System.out.println$("$D$")$;

$\}$ else $\{$

System.out.println$("$F$")$;

$\}$

$\}$

$\}$