#include <stdio.h>
int main()
{
int n,sum,i,j,k,l;
float per;
printf("Enter RANGE of students:");
scanf("%d",&n);
for(i=0;i<n;i++)
{
printf("Enter marks of 3 subjects:");
scanf("%d %d %d",&j,&k,&l);
sum=j+k+l;
per=sum/3.0;
if(per >=90)
{
printf("A+ GRADE\n");
}
else if(per >=80)
{
printf("A GRADE\n");
}
else if(per >=70)
{
printf("B GRADE\n");
}
else if(per >=60)
{
printf("C GRADE\n");
}
else if(per >=50)
{
printf("D GRADE\n");
}
else
{
printf("FAIL\n");
}
}
return 0;
}