/*
#include<stdio.h>
int main()
{
int i,a,b, sum=0;
scanf("%d %d",&a,&b);
for(i=a; i<=b; i++) {
if(i%2==0)
{
printf("-%d", i);
sum -= i;
}
else {
printf("+%d", i);
sum += i;
}
}
printf("=%d",sum);
return 0;
}
#include<stdio.h>
int main()
{
int i,a,b,sum=0;
scanf("%d %d",&a,&b);
for(i=a;i<=b;i++)
{
if(i%2==0)
{
printf("-%d",i);
sum=sum -=i;
}
else
{
if(i!=a) {
printf("+");
}
printf("%d",i);
sum=sum+=i;
}
}
printf("=%d",sum);
return 0;
}
#include<stdio.h>
int main()
{
char i,a,b;
scanf("%c %c",&a,&b);
for(i=a;i<=b;i++)
{
printf("%c ",i);
}
}
#include<stdio.h>
int main()
{
int i,n,sum=0;
scanf("%d",&n);
for(i=1;i<=n;i++)
if(i%2==0)
sum=sum+i;
printf("%d",sum);
return 0;
}
*/