include[HTML_REMOVED]

int main()
{
int n;
scanf(“%d”,&n);
for(int i =0;i[HTML_REMOVED]y){
int t = x;
x = y;
y = t;
}
int sum =0;
for(int i = x+1;i<y;i++)
if(i%2)
sum+=i;

    printf("%d\n",sum);


}
return 0;

}

//if(i%2),不是i%2==1,前者范围大，因为-1也是一样的奇数