#include <stdio.h>
int main(){
    int i, low,up,sum=0;
    printf("Enter upper and lower limit: ");
    scanf("%d %d", &low, &up);

    for(i=low;i<=up;i++){
        if(i%2==0){
            sum=sum+i;
        }
    }
printf("Sum= %d", sum);
return 0;
}