#include <stdio.h>

int main(void) {

  int percent, grade;

  printf("How many percent? ");
  scanf("%d",&percent);

  if (percent >= 90)
   grade = 11;
  else if (percent >= 82)
        grade = 10;
       else if (percent >= 74)
             grade = 9;
            else if (percent >= 66)
                  grade = 8;
                 else if (percent >= 58)
                       grade = 7;
                      else if (percent >= 50)
                            grade = 6;
                           else if (percent >= 40)
                                 grade = 5;
                                else if (percent >= 10)
                                      grade = 3;
                                     else grade = 0; 

  printf("%d percent corresponds to the Danish grade %d\n\n", 
          percent, grade);
  
  return 0;
}