import sys
import math
# Auto-generated code below aims at helping you parse
# the standard input according to the problem statement.
a, b = [int(i) for i in input().split()]
answer = str()
answer += str(a-b)
answer += str(a+b)
print(answer)
import sys
import math
# Auto-generated code below aims at helping you parse
s = input()
mydic = {}
mydic["Scissors"] = "Stone"
mydic["Stone"] = "Hand"
mydic["Hand"] = "Scissors"
print(mydic.get(s,"Error"))
import sys
import math
# Auto-generated code below aims at helping you parse
# the standard input according to the problem statement.
n = int(input())
for i in range(1,n+1,2):
print(i)
import sys
import math
# Auto-generated code below aims at helping you parse
# the standard input according to the problem statement.
a,b = map(int,input().split())
print(180-a-b)
a = int(input())
b= int(input())
c = int(input())
print((a+b)*c/2)
x = int(input())
print(x+x//2)
s = input()
print(s.count('A'),s.count('C'),s.count('G'),s.count('T'),end='')
n = int(input())
mystr = input()
print(mystr.replace(" ", ""))
x = int(input())
y = int(input())
for i in range(x):
for j in range(y):
print("O", end="")
print()
或者(作者:Sberu)
for i in range(h):
print('O'*w)
n = int(input())
ascii = list(map(int, input().split()))
# print(ascii)
# 对里面每一个数字转化为ascii码
for i in ascii:
print(chr(i), end="")
mystr = input().split()
# 字符串逆序后输出字符串
print(' '.join(mystr[::-1]))