Given are two strings S and T consisting of lowercase English letters. Concatenate T and S in this order, without space in between, and print the resulting string.

-----Constraints-----
 - S and T are strings consisting of lowercase English letters.
 - The lengths of S and T are between 1 and 100 (inclusive).

-----Input-----
Input is given from Standard Input in the following format:
S T

-----Output-----
Print the resulting string.

-----Sample Input-----
oder atc

-----Sample Output-----
atcoder

When S =  oder and T =  atc, concatenating T and S in this order results in atcoder.

Difficulty: introductory

Starter code:

Solutions:
S,T = map(str,input().split())
print(T + S)

s, t = map( str, input().split() )
print( t + s )

S,T = input().split()

ans = T+S
print(ans)

S,T=input().split()
print((T+S))


s, t = input().split()

u = t + s

print(u)



s,t=map(str,input().split())
print(t+s)

S,T=map(str,input().split())
print(T+S)

s, t = input().split()
print(t + s)

s, t = input().split()
print(t + s)

#149-A

S,T = list(map(str,input().split()))

print((T+S))


s,t = input().split()
print(t+s)

a,b=input().split()
print(b+a)

S,T =input().split()
print (str(T)+str(S))

S, T = input().split()
print(T+S)

S,T = input().split()

print(T + S)

#!/usr/bin/env python3
from collections import defaultdict, Counter
from itertools import product, groupby, count, permutations, combinations
from math import pi, sqrt
from collections import deque
from bisect import bisect, bisect_left, bisect_right
from string import ascii_lowercase
from functools import lru_cache
import sys
sys.setrecursionlimit(10000)
INF = float("inf")
YES, Yes, yes, NO, No, no = "YES", "Yes", "yes", "NO", "No", "no"
dy4, dx4 = [0, 1, 0, -1], [1, 0, -1, 0]
dy8, dx8 = [0, -1, 0, 1, 1, -1, -1, 1], [1, 0, -1, 0, 1, 1, -1, -1]


def inside(y, x, H, W):
    return 0 <= y < H and 0 <= x < W


def ceil(a, b):
    return (a + b - 1) // b


def sum_of_arithmetic_progression(s, d, n):
    return n * (2 * s + (n - 1) * d) // 2


def gcd(a, b):
    if b == 0:
        return a
    return gcd(b, a % b)


def lcm(a, b):
    g = gcd(a, b)
    return a / g * b


def solve():
    S, T = input().split()
    print((T + S))


def main():
    solve()


def __starting_point():
    main()

__starting_point()

s,t = input().split()

print(t+s)

s,t = input().split()
print(t+s)

s,t = input().split()

print(t + s)

a, b = map(str, input().split())
print('{}{}'.format(b, a))

S,T = map(str,input().split())
print(T+S)

s, t = input().split()
u = t + s
print(u)

s, t = map(str, input().split())
print(t+s)

s, t = input().split()
print("".join([t, s]))

s, t = input().split()
print(t+s)

s, t = map(str, input().split())
print(t + s)

s,t = input().split()
print(t+s)

s,t=input().split()
print(t+s)

s, t = input().split()

print(t + s)

#!/usr/bin/env python3
import sys
from itertools import chain


def solve(S: str, T: str):
    answer = T + S
    return answer


def main():
    tokens = chain(*(line.split() for line in sys.stdin))
    S = next(tokens)  # type: str
    T = next(tokens)  # type: str
    answer = solve(S, T)
    print(answer)


def __starting_point():
    main()

__starting_point()

import math
from collections import Counter
from itertools import product

ii = lambda : int(input())
mi = lambda : map(int,input().split())
li = lambda : list(map(int,input().split()))

s,t = input().split()
print(t+s)

s,t=input().split()
print(t+s)

s,t = input().split()
print(t,s,sep="")

#!/usr/bin/env python3
s,t=input().split()
print(t+s)

S,T = map(str,input().split())

print(T+S)

s, t = input().split()
print(t + s)

# coding: utf-8
# Your code here!

s,t = input().split()
print(t+s)

print(*input().split()[::-1],sep='')

S, T = input().split()
ans = T + S
print(ans)

S,T = input().split()
print(T+S)

s,t=input().split()
print (t+s)

S, T = map(str, input().split())

print(T+S)

s, t = input().split()
print((t + s))


s,t = input().split()
print(t+s)

s,t = input().split()

answer = t + s
print(answer)

s,t = input().split()
print(t+s)

s,t=input().split()

print(t+s)

s,t = input().split()

print(t + s)

s,t=input().split()

r=t+s

print(r)


s, t = map(str, input().split())

print(t+s)

s,t = input().split()
print(t,s,sep='')

s, t = input().split()
print(t+s)

S, T = input().split()
print(T+S)

S, T = map(str, input().split())

print(T+S)

s,t = input().split()
print(t+s)

s, t = input().split()
print(t+s)

s,t=input().split()
print(t+s)

s,t=input().split()

r=t+s

print(r)

x,y = input().split()
print(y+x)

import sys
 
S, T = next(sys.stdin).strip().split()
print(T + S)

s, t = map(list, input().split())
t.extend(s)
print(''.join(t))

s,t=input().split()
print(t+s)

s,t = input().split()
print(t+s)

S, T = input().split()

print(T + S)

b,a = input().split()
print(a + b)

s,t = input().split()
print((t+s))


s,t = map(str, input().split())
print(t+s)

s,t = input().split()
print((t + s))


s,t = map(str,input().split())
print(t+s)

a, b = input().split()
print((b + a))


S, T = map(str, input().split())
print(T + S)

s,t = map(str,input().split())
print(t+s)

s, t = input().split()
print(t+s)

s, t = input().split()
print(t+s)

s,t = input().split()
print(t+s)

a,b=input().split()
for i in b,a:
  print(i,end="")


s,t = input().split()
 
print(t+s)

S, T = input().split()
print(T+S)

s,t = input().split()
print(t+s)

s,t=input().split()
print(t+s)

#!/usr/bin/env python3

def main():
    s, t = input().split()
    print((t + s))


def __starting_point():
    main()

__starting_point()

s,t = list(map(str,input().split()))
print(( t+s ))


s,t = input().split()
print(t,s,sep='')

S,T=input().split()
print(T+S)

S, T = input().split()
print(T + S)

S,T=map(str,input().split())
print(T+S)

s,t=input().split()
print(t+s)

S , T = input().split()
print((T+S))



S, T = input().split()
print(T + S)


s,t=map(str,input().split())
print(t+s,sep='')

s, t = list(input().split())

print((t + s))


S, T = [s for s in input().split()]
print(''.join([T, S]))

s,t = input().split()
print(t+s)

S,T = input().split()

print(T + S)

s, t = input().split()
print(t, s, sep='')

str_l = list(map(str, input().split()))
print(''.join(list(reversed(str_l))))

s, t = input().split()
print((t+s))


s,t=input().split()
print(t+s)

s,t=list(map(str ,input().split()))
ans_str=""
for i in range(0,len(t)):
    ans_str+=t[i]    

ans_str1=""
for j in range(0,len(s)):
    ans_str1+=s[j]

print(ans_str+ans_str1)

s,t=input().split()
print(t+s,sep="")