20240428

#include <stdio.h>

int main ()

{

int a,b,i,c = 0;

scanf("%d %d",&a,&b);

printf("%d",a);

for(i = a; i <=b; i++)

{

if(i%2==0){

c = c - i;

printf("-%d",i);

}

else if(i%2!=0){

c = c + i;

printf("+%d",i);

}

}

}