sol1.
print(int(input()) * 2)
sol2. (비트 연산자 활용)
n= int(input())
print(n << 1)
a << b = a*2^b를 의미
비트 연산자 = 2진수
a, b = input().split()
a = int(a)
b = int(b)
print(a<<b)
a, b =map(int,input().split())
if a < b:
print("True")
else:
print("False")
a, b =map(int,input().split())
if a == b:
print("True")
else:
print("False")
a, b =map(int,input().split())
if a <= b:
print("True")
else:
print("False")
a, b =map(int,input().split())
if a != b:
print("True")
else:
print("False")
n = int(input())
print(bool(n))
bool = boolean 형
참, 거짓 즉 1,0의 값만 가지고 있음
true = 1, false = 0
a = bool(int(input()))
print (not a)
a, b = input().split()
print(bool(int(a)) and bool(int(b)))
a, b = input().split()
print(bool(int(a)) or bool(int(b)))
a, b = input().split()
c = bool(int(a))
d = bool(int(b))
print((c and (not d)) or ((not c) and d))
a, b = input().split()
a = bool(int(a))
b = bool(int(b))
print(a == b)
a, b = input().split()
a = bool(int(a))
b = bool(int(b))
print(not(a or b))
a = int(input())
print(~a)
a, b = input().split()
print (int(a) & int(b))
a, b = input().split()
print (int(a) | int(b))
a, b = input().split()
print (int(a) ^ int(b))
a, b = input().split()
a = int(a)
b = int(b)
c = a if a>=b else b
print(c)
a, b, c = map(int,input().split())
d = a if a < b else b
e = d if d < c else c
print(e)
a, b, c = map(int,input().split())
if a % 2 == 0:
print(a)
if b % 2 == 0:
print(b)
if c % 2 == 0:
print(c)
a, b, c = map(int,input().split())
if a % 2 == 0:
print("even")
else:
print("odd")
if b % 2 == 0:
print("even")
else:
print("odd")
if c % 2 == 0:
print("even")
else:
print("odd")
n=int(input())
if n<0:
if n%2==0:
print('A')
else:
print('B')
else:
if n%2==0:
print('C')
else:
print('D')
a = int(input())
if a>= 90:
print("A")
elif a >= 70:
print("B")
elif a >= 40:
print("C")
else:
print("D")
a = input()
if a=='A':
print("best!!!")
elif a=='B':
print("good!!")
elif a=='C':
print("run!")
elif a=='D':
print("slowly~")
else:
print("what?")
a=int(input())
if a//3==1:
print("spring")
elif a//3==2:
print("summer")
elif a//3==3:
print("fall")
else:
print("winter")
기초에서도 버벅거리는 나..
제법 현타와요..?