View Code of Problem 87

#include<stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>

int main()
{
    int rab,chi,a,sum,min,max;
    scanf("%d",&a);
    min=a;
    max=-1;
    for(rab=0;rab<=a/4;rab++){
        for(chi=0;chi<=a/2;chi++){
            if(rab*4+chi*2==a){
                sum=rab+chi;
                if(sum<min){
                    min=sum;
                }
                if(sum>max){
                    max=sum;
                }
            }
        }
    }
    if(min!=a&&max!=-1){
        printf("%d %d",min,max);
    }else{
        printf("0 0");
    }
    
	return 0;
}