Problem:
 Score : 100 points    Problem Statement You are given two integers a and b .
Determine if a+b=15 or a\times b=15 or neither holds.  Note that a+b=15 and a\times b=15 do not hold at the same time.      Constraints  1 \leq a,b \leq 15  All values in input are integers.         Input Input is given from Standard Input in the following format:  a  b       Output If a+b=15 , print + ;
if a\times b=15 , print * ;
if neither holds, print x .        Sample Input 1 4 11      Sample Output 1 +  4+11=15 .       Sample Input 2 3 5      Sample Output 2 *  3\times 5=15 .       Sample Input 3 1 1      Sample Output 3 x  1+1=2 and 1\times 1=1 , neither of which is 15 .

Solution (Python):
import itertools
from collections import deque,defaultdict,Counter
from itertools import accumulate
import bisect
from heapq import heappop,heappush,heapify
from fractions import gcd
from copy import deepcopy
import math
import queue
import numpy as np

Mod = 1000000007
import sys
sys.setrecursionlimit(100000) 
  
def sieve_of_eratosthenes(n):
    if not isinstance(n,int):
        raise TypeError("n is not int")
    if n<2:
        raise ValueError("n is not effective")
    prime = [1]*(n+1)
    for i in range(2,int(math.sqrt(n))+1):
        if prime[i] == 1:
            for j in range(2*i,n+1):
                if j%i == 0:
                    prime[j] = 0
    res = []
    for i in range(2,n+1):
        if prime[i] == 1:
            res.append(i)
    return res

 
class UnionFind:
    def __init__(self,n):
        self.parent = [i for i in range(n+1)]
        self.rank = [0 for i in range(n+1)]
    
    def findroot(self,x):
        if x == self.parent[x]:
            return x
        else:
            y = self.parent[x]
            y = self.findroot(self.parent[x])
            return y
    
    def union(self,x,y):
        px = self.findroot(x)
        py = self.findroot(y)
        if px < py:
            self.parent[py] = px
        else:
            self.parent[px] = py
 
    def same_group_or_no(self,x,y):
        return self.findroot(x) == self.findroot(y)

def main(): 
    a,b = map(int,input().split())
    if a+b == 15:
        print("+")
    elif a*b == 15:
        print("*")
    else:
        print("x")
if __name__ == "__main__":
    main()

Solution (Python):
a, b = map(int, input().split())

if a + b == 15:
    print("+")
elif a * b == 15:
    print("*")
else:
    print("x")

Solution (Python):
a,b= map(int,input().split())

if a+b == 15:
  print("+")
elif a*b == 15:
  print("*")
else:
  print("x")

Solution (Python):
a,b=map(int,input().split())
if a+b==15:
  print("+")
elif a*b==15:
  print("*")
else:
  print("x")

Solution (Python):
import sys

def I(): return int(sys.stdin.readline())
def MI(): return map(int, sys.stdin.readline().split())
def LMI(): return list(map(int, sys.stdin.readline().split()))
MOD = 10 ** 9 + 7
INF = float('inf')


a, b = MI()
if a + b == 15:
    print('+')
elif a * b == 15:
    print('*')
else:
    print('x')

Solution (Python):
a, b = map(int, input().split())
if a+b == 15:
    print('+')
elif a*b == 15:
    print('*')
else:
    print('x')

Solution (Python):
a, b = map(int, input().split())

if a+b == 15:
  print("+")
elif a*b == 15:
  print("*")
else:
  print("x")

Solution (Python):
a, b = map(int, input().split())
if a + b == 15:
    print("+")
elif a * b == 15:
    print("*")
else:
    print("x")

Solution (Python):
a,b=map(int,input().split())

print("+"if a+b==15 else"*"if a*b==15else"x")

Solution (Python):
x, y = map(int, input().split())

if x + y == 15:
    print("+")
elif x * y == 15:
    print("*")
else:
    print("x")

Solution (Python):
a, b = map(int, input().split())
if a + b == 15:
    print('+')
elif a*b == 15:
    print('*')
else:
    print('x')

Solution (Python):
a, b = input().split()

for e in ["+", "*"]:
    if eval(a + e + b) == 15:
        print(e)
        exit()

print("x")

Solution (Python):
a, b = list(map(int, input().split()))

r = ''
if a + b == 15:
    r = '+'
elif a * b == 15:
    r = '*'
else:
    r = 'x'

print(r)

Solution (Python):
a, b = map(int, input().split())
print('+' if a + b == 15 else '*' if a * b == 15 else 'x')

Solution (Python):

a,b = map(int,input().split())
if a+b == 15:
    print("+")
elif a*b == 15:
    print("*")
else:
    print("x")

Solution (Python):
a,b = map(int,input().split())


if a + b == 15:
  print("+")
elif a * b ==15:
  print("*")
else:
  print("x")

Solution (Python):
a, b = map(int, input().split())

if a + b == 15: print("+")
elif a * b == 15: print("*")
else: print("x")

Solution (Python):
a,b=map(int, input().split())
print("+" if a+b==15 else "*" if a*b==15 else "x")

Solution (Python):

a, b = map(int,input().split())
if a + b == 15:
    print("+")
elif a * b == 15:
    print("*")
else:
    print("x")

Solution (Python):
a,b=map(int,input().split())
if a+b==15:
    print("+")
elif a*b==15:
    print("*")
else:
    print("x")

Solution (Python):
a,b=map(int,input().split())
if a+b==15:
  print('+')
elif a*b==15:
  print('*')
else:
  print('x')

Solution (Python):
a, b = map(int, input().split())

if a + b == 15:
    print('+')
elif a * b == 15:
    print('*')
else:
    print('x')

Solution (Python):
a, b = map(int, input().split())

if a + b == 15:
    print('+')
elif a * b == 15:
    print('*')
else:
    print('x')

Solution (Python):
a,b= map(int, input().split())

if a*b==15:
    print('*')
elif a+b==15:
    print('+')
else:
    print('x')

Solution (Python):
x,y = map(int,input().split())

if x+y==15:
    print('+')
elif x*y==15:
    print('*')
else:
    print('x')

Solution (Python):
a, b = map(int, input().split())
if a + b == 15:
    print("+")
elif a * b == 15:
    print("*")
else:
    print("x")

Solution (Python):
a,b=map(int,input().split())
if a+b==15:
    print('+')
elif a*b==15:
    print('*')
else:
    print('x')

Solution (Python):
a,b=map(int,input().split())
if a+b==15:
    print("+")
elif a*b==15:
    print("*")
else:
    print("x")

Solution (Python):
a,b=map(int,input().split())
if (a+b)==15:
  print("+")
elif a*b==15:
  print("*")
else:
  print("x")

Solution (Python):
x,y=map(int,input().split())
if x+y==15:
  print("+")
elif x*y==15:
  print("*")
else:
  print("x")

Solution (Python):


a, b = [int(x) for x in input().split()]
if a + b == 15:
    print('+')
elif a * b == 15:
    print('*')
else:
    print('x')

Solution (Python):
a, b = map(int, input().split())

if a + b == 15:
  print('+')
elif a * b == 15:
  print('*')
else:
  print('x')

Solution (Python):
x,y = map(int,input().split())

if x+y == 15:
    print('+')
elif x*y == 15:
    print('*')
else:
    print('x')

Solution (Python):
a, b = map(int, input().split())
if a + b == 15 :
    print("+")
elif a * b == 15 :
    print("*")
else :
    print("x")

Solution (Python):
a, b = map(int, input().split())
if a + b == 15:
    print('+')
elif a * b == 15:
    print('*')
else:
    print('x')

Solution (Python):
a, b = map(int, input().split())
if a + b == 15:
  print('+')
elif a * b == 15:
  print('*')
else:
  print('x')

Solution (Python):








mod = int(1e9+7)

def main():
    a,b = map(int,input().split())
    if a+b==15:
        print('+')
    elif a*b==15:
        print('*')
    else:
        print('x')
    return

if __name__=='__main__':
    main()

Solution (Python):


a,b = map(int,input().split())
if a+b == 15: print("+")
elif a*b == 15: print("*")
else: print("x")

Solution (Python):
a,b=[int(x) for x in input().split()]
  
if(a*b==15):
  print("*")
elif(a+b==15):
  print("+")
else:
  print("x")

Solution (Python):
a,b = map(int,input().split())
if a+b==15:
    print('+')
elif a*b==15:
    print('*')
else:
    print('x')

Solution (Python):
a,b=map(int,input().split())

if a+b==15:
    print("+")
elif  a*b==15:
    print("*")
else:
    print("x")

Solution (Python):
a, b = map(int, input().split())
if a + b == 15 :
    print("+")
elif a * b == 15:
    print("*")
else:
    print("x")

Solution (Python):
a,b = [int(i) for i in input().split()]


if a + b == 15:
  print('+')
elif a * b == 15:
  print('*')
else:
  print('x')

Solution (Python):
a,b = map(int,input().split())
if a + b == 15:
  print("+")
elif a * b == 15:
  print("*")
else:
  print("x")

Solution (Python):
from sys import stdin
from itertools import groupby
a,b = [int(x) for x in stdin.readline().rstrip().split()]
if a+b == 15:
    print("+")
elif a*b == 15:
    print("*")
else:
    print("x")

Solution (Python):
a,b = map(int,input().split())
if a+b == 15:
  print("+")
elif a*b == 15:
  print("*")
else:
  print("x")

Solution (Python):
A,B = map(int,input().split())
if A + B == 15:
	print("+")
elif A * B == 15:
	print("*")
else:
	print("x")

Solution (Python):
a,b = map(int,input().split())

if a + b == 15:
    print("+")
elif a * b == 15:
    print("*")
else:
    print("x")

Solution (Python):
a,b=map(int,input().split())
if a+b==15:
  print("+")
elif a*b==15:
  print("*")
else:
  print("x")

Solution (Python):
a,b=map(int,input().split())

if a+b==15:
  print("+")
elif a*b==15:
  print("*")
else:
  print("x")

Solution (Python):

 
import math
import itertools
import sys
import copy
 






a, b = map(int, input().split())

if a+b == 15 :
  print ("+")
elif a*b == 15 :
  print ("*")
else :
  print ("x")

Solution (Python):
a, b = map(int, input().split())

if(a+b == 15):
    print("+")
elif(a*b == 15):
    print("*")
else:
    print("x")

Solution (Python):


a, b = map(int, input().split())

if a + b == 15:
    print('+')
elif a * b == 15:
    print('*')
else:
    print('x')

Solution (Python):
a,b=map(int,input().split())
if a+b==15:
  print('+')
elif a*b==15:
  print('*')
else:
  print('x')

Solution (Python):
def main():
    a,b = map(int,input().split())
    if a*b==15:
        print("*")
    elif a+b==15:
        print("+")
    else:
        print("x")
    
if __name__ == '__main__':
    main()

Solution (Python):
a, b = map(int, input().split())
if a+b == 15:
    print('+')
elif a*b == 15:
    print('*')
else:
    print('x')

Solution (Python):
from heapq import heappush,heappop,heapify
from collections import deque,defaultdict,Counter
import itertools
from itertools import permutations,combinations,groupby
import sys
import bisect
import string
import math
import time
import random
def S_():
    return input()
def LS():
    return [i for i in input().split()]
def I():
    return int(input())
def MI():
    return map(int,input().split())
def LI():
    return [int(i) for i in input().split()]
def LI_():
    return [int(i)-1 for i in input().split()]
def NI(n):
    return [int(input()) for i in range(n)]
def NI_(n):
    return [int(input())-1 for i in range(n)]
def StoI():
    return [ord(i)-97 for i in input()]
def ItoS(nn):
    return chr(nn+97)
def LtoS(ls):
    return ''.join([chr(i+97) for i in ls])
def GI(V,E,Directed=False,index=0):
    org_inp=[]
    g=[[] for i in range(n)]
    for i in range(E):
        inp=LI()
        org_inp.append(inp)
        if index==0:
            inp[0]-=1
            inp[1]-=1
        if len(inp)==2:
            a,b=inp
            g[a].append(b)
            if not Directed:
                g[b].append(a)
        elif len(inp)==3:
            a,b,c=inp
            aa=(inp[0],inp[2])
            bb=(inp[1],inp[2])
            g[a].append(bb)
            if not Directed:
                g[b].append(aa)
    return g,org_inp
def bit_combination(k,n=2):
    rt=[]
    for tb in range(n**k):
        s=[tb//(n**bt)%n for bt in range(k)]
        rt+=[s]
    return rt
def show(*inp,end='\n'):
    if show_flg:
        print(*inp,end=end)
YN=['Yes','No']
mo=10**9+7
inf=float('inf')
l_alp=string.ascii_lowercase
u_alp=string.ascii_uppercase
ts=time.time()
sys.setrecursionlimit(10**5)
input=lambda: sys.stdin.readline().rstrip()

def ran_input():
    import random
    n=random.randint(4,16)
    rmin,rmax=1,10
    a=[random.randint(rmin,rmax) for _ in range(n)]
    return n,a

show_flg=False
show_flg=True

ans=0


a,b=LI()
if a+b==15:
    ans='+'
elif a*b==15:
    ans='*'
else:
    ans='x'

print(ans)

Solution (Python):
a,b = map(int,input().split())
if a+b==15:
  print('+')
elif a*b==15:
  print('*')
else :
  print('x')

Solution (Python):
s=input().split()
i=int(s[0])
j=int(s[1])
if i+j==15:
  print("+")
elif i*j==15:
  print("*")
else:
  print("x")

Solution (Python):
a,b = map(int,input().split())
print('+' if a+b==15 else '*' if a*b==15 else 'x')

Solution (Python):
a,b=map(int,input().split())
if a+b==15:
    print('+')
elif a*b==15:
    print('*')
else:
    print('x')

Solution (Python):
a, b = map(int, input().split())

if a + b == 15:
	print('+')
elif a * b == 15:
	print('*')
else:
	print('x')

Solution (Python):
import sys
if sys.platform =='ios':
	sys.stdin=open('input.txt')

a,b = map(int,input().split())

if a+b==15:
	print("+")
elif a*b==15:
	print("*")
else:
	print("x")

Solution (Python):
a,b=map(int,input().split())
if a*b == 15:
  print("*")
elif a+b == 15:
  print("+")
else:
  print("x")

Solution (Python):
A, B = map(int, input().split())
print("+" if A+B == 15 else "*" if A*B == 15 else "x")

Solution (Python):
a, b = map(int, input().split())

if a + b == 15 :
  print('+')
elif a * b == 15 :
  print('*')
else :
  print('x')

Solution (Python):
a,b = map(int,input().split())
if a + b == 15:
  print("+")
elif a * b == 15:
  print("*")
else:
  print("x")

Solution (Python):
a=list(map(int, input().split()))

check=0
if a[0]+a[1]==15:
    check=1
elif a[0]*a[1]==15:
    check=2

if check==1:
    print("+")
elif check==2:
    print("*")
else:
    print("x")

Solution (Python):
a,b=map(int,input().split())
if	a+b==15:
	print("+")
elif	a*b==15:
	print("*")
else:
	print("x")

Solution (Python):
a,b = map(int,input().split())
if a+b == 15:
    print("+")
elif a*b == 15:
    print("*")
else:
    print("x")

Solution (Python):
a,b = map(int,input().split())
if a*b == 15:
    print("*")
elif a+b == 15:
    print("+")
else:
    print("x")

Solution (Python):
a,b=map(int,input().split())

if a+b ==15:
    print('+')
elif a*b == 15:
    print('*')
else:
    print('x')

Solution (Python):
a,b = map(int,input().split())
if a+b==15:
    print("+")
elif a*b==15:
    print("*")
else:
    print("x")

Solution (Python):
import sys
sys.setrecursionlimit(2147483647)
INF=float("inf")
MOD=10**9+7
input=lambda:sys.stdin.readline().rstrip()
def resolve():
    a,b=map(int,input().split())
    if(a+b==15):
        print('+')
    elif(a*b==15):
        print('*')
    else:
        print('x')
resolve()

Solution (Python):
a,b = map(int,input().split())

if a + b == 15:
  print ("+")
elif a * b == 15:
  print ("*")
else:
  print ("x")

Solution (Python):


a,b=map(int,input().split())
if a+b==15:
    print('+')
elif a*b==15:
    print('*')
else:print('x')

Solution (Python):
def examA():
    a, b = LI()
    ans = "x"
    if a+b==15:
        ans = "+"
    elif a*b==15:
        ans = "*"
    print(ans)


import sys,copy,bisect,itertools,heapq,math
from heapq import heappop,heappush,heapify
from collections import Counter,defaultdict,deque
def I(): return int(sys.stdin.readline())
def LI(): return list(map(int,sys.stdin.readline().split()))
def LSI(): return list(map(str,sys.stdin.readline().split()))
def LS(): return sys.stdin.readline().split()
def SI(): return sys.stdin.readline().strip()
mod = 10**9 + 7
inf = float('inf')

examA()

Solution (Python):
a, b = map(int, input().split())
print("+" if a + b == 15 else "*" if a*b == 15 else "x")

Solution (Python):
import sys
input = sys.stdin.readline
a, b = map(int, input().split())
if a + b == 15:
  print("+")
elif a * b == 15:
  print("*")
else:
  print("x")

Solution (Python):
a,b=map(int,input().split())
if a+b==15:
    ans='+'
elif a*b==15:
    ans='*'
else:
    ans='x'

print(ans)

Solution (Python):
def resolve():
    a,b=map(int,input().split())
    if a+b==15:
        ans='+'
    elif a*b==15:
        ans='*'
    else:
        ans='x'
    print(ans)
resolve()

Solution (Python):

a, b = map(int, input().split())

if a + b == 15:
  print('+')
elif a * b == 15:
  print('*')
else:
  print('x')

Solution (Python):

a, b = map(int,input().split())
if a + b == 15:
    print("+")
elif a*b == 15:
    print("*")
else:
    print("x")

Solution (Python):
A, B = map(int, input().split())
if A +B == 15:
  print("+")
elif A*B==15:
  print("*")
else:
  print("x")

Solution (Python):
a, b = map(int, input().split())
if a + b == 15:
    print ('+')
elif a * b == 15:
    print('*')
else:
    print('x')

Solution (Python):
a, b = map(int, input().split())
if a + b == 15:
  print("+")
elif a*b == 15:
  print("*")
else:
  print("x")

Solution (Python):
a,b=map(int,input().split())
if a*b==15:
  print("*")
elif a+b==15:
  print("+")
else:
  print("x")

Solution (Python):
import sys


def solve():
    readline = sys.stdin.buffer.readline
    mod = 10 ** 9 + 7
    a, b = list(map(int, readline().split()))
    if a + b == 15:
        print("+")
    elif a * b == 15:
        print("*")
    else:
        print("x")


if __name__ == '__main__':
    solve()

Solution (Python):
a,b = (int(i) for i in input().split())

if a + b == 15:
    print('+')
elif a * b == 15:
    print('*')
else:
    print('x')

Solution (Python):
a, b = map(int, input().split())
if a + b == 15:
    print("+")
elif a * b == 15:
    print("*")
else:
    print("x")

Solution (Python):
a,b=map(int,input().split())
if a+b==15:
    print('+')
    exit()
elif a*b==15:
    print('*')
    exit()
print('x')

Solution (Python):
a, b = map(int, input().split())
if a + b == 15:
  print("+")
elif a * b == 15:
  print("*")
else:
  print("x")

Solution (Python):
a, b = map(int, input().split())
if a + b == 15:
    print("+")
elif a * b == 15:
    print("*")
else:
    print("x")

Solution (Python):
a, b = map(int, input().split())
if a+b == 15:
  print("+")
elif a*b == 15:
  print("*")
else:
  print("x")

Solution (Python):

a, b = [int(s) for s in input().split()]
if a + b == 15:
    print('+')
elif a * b == 15:
    print('*')
else:
    print('x')

Solution (Python):
a,b=map(int,input().split());print("x*+"[(a*b==15)+(a+b==15)*2])

Solution (Python):
A, B = map(int, input().split())

if A * B == 15:
    print('*')
elif A + B == 15:
    print('+')
else:
    print('x')

Solution (Python):
a,b=map(int,input().split())
if a*b==15:
    print('*')
elif a+b==15:
    print('+')
else:
    print('x')

Solution (Python):
a,b = map(int,input().split())
if a + b == 15:
    print('+')
elif a * b == 15:
    print('*')
else:
    print('x')

Solution (Python):
a, b = map(int, input().split())
if a + b == 15:
	print("+")
elif a * b == 15:
	print("*")
else:
	print("x")

Solution (Python):
a,b=map(int,input().split())
if a+b==15:
    print("+")
elif a*b==15:
    print("*")
else:
    print("x")

Solution (Python):
a,b=map(int,input().split())
if a+b==15:
    print('+')
elif a*b==15:
    print('*')
else:
    print('x')

Solution (Python):
A,B=map(int,input().split())
if(A+B==15):
  print("+")
elif(A*B==15):
  print("*")
else:
  print("x")

Solution (Python):
a, b = map(int, input().split())

if a+b == 15:
    print('+')
elif a*b == 15:
    print('*')
else:
    print('x')

Solution (Python):
a,b=map(int,input().split())
if a+b==15:
    print('+')
elif a*b==15:
    print('*')
else:
    print('x')

Solution (Python):
a, b = tuple(map(int, input().split()))
if a + b == 15:
    print("+")
elif a * b == 15:
    print("*")
else:
    print("x")

Solution (Python):

import sys
import collections
import copy
import math
from operator import itemgetter
def input(): return sys.stdin.readline().strip()
def make_divisors(n):
    divisors = []
    for i in range(1, int(n**0.5)+1):
        if n % i == 0:
            divisors.append(i)
            if i != n // i:
                divisors.append(n//i)

    
    return divisors
a,b = map(int,input().split())
if a*b ==15:
    print("*")
elif a+b == 15:
    print("+")
else:
    print("x")

Solution (Python):
a,b=map(int,input().split())

if a*b==15:
  print('*')
elif a+b==15:
  print('+')
else:
  print('x')

Solution (Python):
a, b = map(int, input().split())
if a+b == 15:
    print("+")
elif a*b == 15:
    print("*")
else:
    print("x")

Solution (Python):
def slove():
    import sys
    input = sys.stdin.readline
    a, b = list(map(int, input().rstrip('\n').split()))
    if a + b == 15:
        print("+")
    elif a * b == 15:
        print("*")
    else:
        print("x")


if __name__ == '__main__':
    slove()

Solution (Python):
a,b=map(int,input().split())
if a+b==15:
    print("+")
elif a*b==15:
    print("*")
else:
    print("x")

Solution (Python):
N, M = map(int, input().split())

if N+M == 15:
    print('+')
elif N*M == 15:
    print('*')
else:
    print('x')

Solution (Python):
a,b=list(map(int, input().split()))
if(a+b==15):print('+')
elif(a*b==15):print('*')
else:print('x')

Solution (Python):
a, b = map(int, input().split())
if a+b == 15:
  print('+')
elif a*b == 15:
  print('*')
else:
  print('x')

Solution (Python):
def main():
    a, b = (int(i) for i in input().split())
    print("+" if a+b == 15 else("*" if a*b == 15 else "x"))

if __name__ == '__main__':
    main()

Solution (Python):
a,b=map(int,input().split())

if a+b==15:
    print('+')
elif a*b==15:
    print('*')
else:
    print('x')

Solution (Python):
a,b = map(int, input().split())
if a+b ==15:
  print('+')
elif a*b==15:
  print('*')
else:
  print('x')

Solution (Python):
a,b = map(int,input().split())

if a+b==15:
    print("+")
elif a*b==15:
    print("*")
else:
    print("x")

Solution (Python):
a, b = map(int, input().split())
if a + b == 15:
  print("+")
elif a * b == 15:
  print("*")
else:
  print("x")

Solution (Python):
a,b=map(int,input().split())
print("+" if a+b==15 else "*" if a*b==15 else "x")

Solution (Python):
a, b = map(int, input().split())
if a*b==15:
  print("*")
elif a+b==15:
  print("+")
else:
  print("x")

Solution (Python):
a,b = [int(x) for x in input().split()]
if(a+b == 15):
  print('+')
elif(a*b == 15):
  print('*')
else:
  print('x')

Solution (Python):
a, b = map(int, input().split())
if a + b == 15: print('+')
elif a * b == 15: print('*')
else: print('x')

Solution (Python):
x,y = map(int,input().split())

if(x+y==15):
    print("+")
elif(x*y==15):
    print("*")
else:
    print("x")

Solution (Python):
a,b=map(int,input().split());print("x+*"[(a+b==15)+2*(a*b==15)::3])

Solution (Python):
def slove():
    import sys
    input = sys.stdin.readline
    a, b = list(map(int, input().rstrip('\n').split()))
    if a + b == 15:
        print("+")
    elif a * b == 15:
        print("*")
    else:
        print("x")


if __name__ == '__main__':
    slove()

Solution (Python):
def main():

    a, b = map(int, input().split())
    if a + b == 15: return "+"
    if a * b == 15: return "*"
    return "x"

if __name__ == '__main__':
    print(main())

Solution (Python):
a,b = map(int,input().split())
if a+b == 15:
  print("+")
elif a*b == 15:
  print("*")
else:
  print("x")

Solution (Python):
a, b = map(int, input().split())
if a+b == 15:
  print("+")
elif a*b == 15:
  print("*")
else:
  print("x")

Solution (Python):
s=input();print("".join(c*(eval(s.replace(" ",c))==15)for c in"+*")or"x")

Solution (Python):
a,b = map(int,input().split())
if a+b == 15:
  print("+")
elif a*b == 15:
  print("*")
else:
  print("x")

Solution (Python):

def main():
    a, b = map(int, open(0).read().split())
    if a + b == 15:
        print("+")
    elif a * b == 15:
        print("*")
    else:
        print("x")


if __name__ == "__main__":
    main()

Solution (Python):

a,b = map(int,input().split())
if a + b == 15:
    print('+')
elif a*b == 15:
    print('*')
else:
    print('x')

Solution (Python):
a, b = map(int,input().split())
if a+b == 15:
    print('+')
elif a*b == 15:
    print('*')
else:
    print('x')

Solution (Python):



a, b = map(int, input().split())




if a + b == 15:
    print('+')
elif a * b == 15:
    print('*')
else:
    print('x')

Solution (Python):
a,b=map(int,input().split())
if a+b==15:
    print("+")
elif a*b==15:
    print("*")
else:
    print("x")

Solution (Python):
a,b=map(int,input().split())
print('+' if a+b==15 else '*' if a*b==15 else 'x')

Solution (Python):
def solve(a, b):
    if a + b == 15:
        return "+"
    elif a * b == 15:
        return "*"
    else:
        return "x"

a, b = map(int, input().split())
print(solve(a, b))

Solution (Python):
a, b = map(int, input().split())
if a+b == 15:
  print("+")
elif a*b == 15:
  print("*")
else:
  print("x")

Solution (Python):
a, b = map(int, input().split())
if a+b == 15:
    print('+')
elif a*b == 15:
    print('*')
else:
    print('x')

Solution (Python):
a, b = map(int, input().split())
if a + b == 15:
    print("+")
elif a * b == 15:
    print("*")
else:
    print("x")

Solution (Python):
a,b=map(int,input().split())
print('+' if a+b==15 else '*' if a*b==15 else 'x')

Solution (Python):
a, b = map(int, input().split())
print("+" if a + b == 15 else "*" if a * b == 15 else "x")

Solution (Python):
a, b = [ int(v) for v in input().split() ]
if a * b == 15:
  print("*")
elif a + b == 15:
  print("+")
else:
  print("x")

Solution (Python):
a,b=map(int,input().split())
if a+b==15:
	print("+")
elif a*b==15:
	print("*")
else:
	print("x")

Solution (Python):
a, b = map(int,input().split())
if a+b == 15:
    print('+')
elif a*b == 15:
    print('*')
else:
    print('x')

Solution (Python):
a,b=map(int,input().split())

if a+b==15:
    print('+')
elif a*b==15:
    print('*')
else:
    print('x')

Solution (Python):
def main(a, b):
    if a + b == 15:
        return '+'
    elif a * b == 15:
        return '*'

    return 'x'


if __name__ == '__main__':
    a, b = map(int, input().split(' '))

    print(main(a, b))

Solution (Python):
a, b = [int(_) for _ in input().split()]

if a + b == 15:
    print("+")
elif a * b == 15:
    print("*")
else:
    print("x")

Solution (Python):
a,b = map(int,input().split())
if a+b == 15:
    print("+")
elif a*b ==15:
    print("*")
else:
    print("x")

Solution (Python):
a,b=map(int,input().split())
if a*b==15:print('*')
elif a+b==15:print('+')
else:print('x')

Solution (Python):
a,b = map(int,input().split())

if a+b == 15:
    print("+")
elif a*b == 15:
    print("*")
else:
    print("x")

Solution (Python):
def main():
    a, b = map(int, input().split())
    if a+b == 15:
        print("+")
    elif a*b == 15:
        print("*")
    else:
        print("x")


if __name__ == "__main__":
    main()

Solution (Python):
a,b=map(int,input().split())
if a+b==15:
    print("+")
elif a*b==15:
    print("*")
else:
    print("x")

Solution (Python):
a, b = [int(item) for item in input().split()]
if a + b == 15:
  print("+")
elif a * b == 15:
  print("*")
else:
  print("x")

Solution (Python):
a = input().split(' ')
A = int(a[0])
B = int(a[1])
if A+B==15:print("+")
elif A*B==15:print("*")
else :print("x")

Solution (Python):
a, b = map(int, input().split())
if a + b == 15:
    print("+")
elif a * b == 15:
    print("*")
else:
    print("x")

Solution (Python):
a,b=map(int,input().split())
if a+b==15:print("+")
elif a*b==15:print("*")
else:print("x")

Solution (Python):
a,b = map(int,input().split())
if a+b==15:
    print("+")
elif a*b==15:
    print("*")
else:
    print("x")

Solution (Python):
A, B = map(int, input().split())

print(["x", "+", "*"][((A + B) == 15) - ((A * B) == 15)])

Solution (Python):
a,b=map(int,input().split())
print("+" if a+b==15 else "*" if a*b==15 else "x")

Solution (Python):

def main():
    a, b = list(map(int, input().rstrip().split()))
    if a + b == 15:
        print("+")
    elif a * b == 15:
        print("*")
    else:
        print("x")


if __name__ == "__main__":
    main()

Solution (Python):
a, b = map(int, input().split())

if a + b == 15:
    print('+')
elif a * b == 15:
    print('*')
else:
    print('x')

Solution (Python):
a, b = map(int, input().split())

if a + b == 15:
    print("+")
elif a * b == 15:
    print("*")
else:
    print("x")

Solution (Python):
a, b = map(int, input().split())

if a * b == 15:
    print("*")
elif a + b == 15:
    print("+")
else:
    print("x")

Solution (Python):
a,b = map(int, input().split())
if a+b == 15:
    print("+")
elif a* b == 15:
    print("*")
else:
    print("x")

Solution (Python):
a, b = map(int, input().split())
if a + b == 15:
    print('+')
    exit()
if a * b == 15:
    print('*')
    exit()
print('x')

Solution (Python):
a, b = map(int, input().split())
if a+b == 15:
    print('+')
elif a*b == 15:
    print('*')
else:
    print('x')

Solution (Python):
a, b = map(int, input().split())

if a+b == 15:
    print('+')
elif a*b == 15:
    print('*')
else:
    print('x')

Solution (Python):
a,b=map(int,input().split())
if a+b==15:
    print('+')
elif a*b==15:
    print('*')
else:
    print('x')

Solution (Python):
a, b = map(int, input().split())
if a+b == 15:
    print('+')
elif a*b == 15:
    print('*')
else:
    print('x')

Solution (Python):
a,b=map(int,input().split())
if a+b==15:
  print("+")
elif a*b==15:
  print("*")
else:print("x")

Solution (Python):
a,b = map(int,input().split())
if a+b==15:print("+")
elif a*b==15:print("*")
else:print("x")

Solution (Python):
a,b= map(int,input().split())

if a+b==15:
    print("+")
elif a*b==15:
    print("*")
else:
    print("x")

Solution (Python):
a, b = map(int, input().split())
if a + b == 15:
    print("+")
elif a * b == 15:
    print("*")
else:
    print("x")

Solution (Python):
a, b = [int(i) for i in input().split()]
if a+b == 15:
    print("+")
elif a*b == 15:
    print("*")
else:
    print("x")

Solution (Python):
a,b=map(int,input().split())
if a+b==15:
  print("+")
elif a*b==15:
  print("*")
else:
  print("x")

Solution (Python):
import bisect
import os
from collections import Counter, deque
from fractions import gcd
from functools import lru_cache
from functools import reduce
import functools
import heapq
import itertools
import math
import numpy as np
import re
import sys

if os.getenv("LOCAL"):
    sys.stdin = open("_in.txt", "r")

sys.setrecursionlimit(2147483647)
INF = float("inf")

a, b = list(map(int, sys.stdin.readline().split()))
if a + b == 15:
    print('+')
elif a*b == 15:
    print('*')
else:
    print('x')

Solution (Python):
a,b = map(int,input().split())
answer = 'x'
if a+b == 15:
  answer = '+'
elif a*b == 15:
  answer = '*'
print(answer)

Solution (Python):
a, b = map(int, input().split())
if a+b == 15:
  print("+")
elif a*b == 15:
  print("*")
else:
  print("x")

Solution (Python):
a,b = map(int,input().split())
if a+b==15 or a*b==15:
    if a*b==15:
        print("*")
    else:
        print("+")
else:
    print("x")

Solution (Python):
a, b = map(int, input().split())
if a+b == 15:
  print('+')
elif a*b == 15:
  print('*')
else:
  print('x')

Solution (Python):
a,b = map(int,input().split())
if a+b == 15:
    print("+")
elif a*b == 15:
    print("*")
else:
    print("x")

Solution (Python):
a,b = map(int,input().split())
if a+b == 15:
        print("+")
elif a*b == 15:
        print("*")
else:
        print("x")

Solution (Python):
a,b = map(int,input().split())

if a+b == 15 :
    ans = "+"
elif a*b == 15 :
    ans = "*"
else :
    ans = "x"

print(ans)

Solution (Python):
a,b = map(int,input().split())
if a + b == 15:
    print("+")
elif a * b == 15:
    print("*")
else:
    print("x")

Solution (Python):

import sys
input = sys.stdin.readline
def mi(): return map(int, input().split())


a, b = mi()

if a+b==15: print('+')
elif a*b == 15: print('*')
else: print('x')

Solution (Python):
a, b = map(int, input().split())
if a + b == 15:
	print("+")
elif a * b == 15:
	print("*")
else:
	print("x")

Solution (Python):
a,b=map(int,input().split())
if a+b==15:
  print('+')
elif a*b==15:
  print('*')
else:
  print('x')

Solution (Python):
a, b = map(int, input().split())
if a + b == 15:
    print("+")
elif a * b == 15:
    print("*")
else:
    print("x")

Solution (Python):
a, b = map(int, input().split())
ans = "+" if a + b == 15 else "*" if a * b == 15 else "x"
print(ans)