#include<stdio.h>
int main(){
    int n1=95,n2=95,n3=97,n4=98,n5=90;
    float per=((n1+n2+n3+n4+n5)/5.0);
    if(per>=90){
               printf("Grade A ");
    }
    else if (per>=80){
        printf("Grade B ");
    }
    else if (per>=70){
        printf("Grade C");
        
    }
    else if (per>=60){
    printf("Grade D");
    }
    else if(per>=40){
        printf ("Grade E");
    }
    else if (per<40){
        printf("Grade F");
    }
}

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