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

#define QUEUE_SIZE 100
int rear;
int front;
int queue[QUEUE_SIZE];

#define next(a) (((a) + 1) % QUEUE_SIZE)

void init(void);
void enqueue(int x);
int dequeue(void);

int main(void){
		init();
		int x = 0;
		int y = 0;
		for(int i = 0;i < 2;i++){
				scanf("%d", &x);
				enqueue(x);
		}
		y = -dequeue() + dequeue();

		if(y == 0){
				printf("0\n");
		}else if(y > 0){
				printf("+%d\n", y);
		}else{
				printf("%d\n", y);
		}

		return 0;
}

void init(void){
		rear = front = 0;
}

void enqueue(int x){
		queue[rear] = x;
		rear = next(rear);
}

int dequeue(void){
		int x = 0;
		x = queue[front];
		front = next(front);
	   	return x;
}