오일러 1049,1050,1051,1135

#1049 사칙연산 : 오일러OJ (euleroj.io)

x=int(input())

a=input()

y=int(input())

b=input()

z=int(input())

sum=0

if a=="+":

    if b=="+":

        sum=(x+y)+z

    elif b=="-":

        sum=(x+y)-z

    elif b=="*":

        sum=(x+y)*z

    elif b=="/":

        sum=(x+y)/z

elif a=="-":

    if b=="+":

        sum=(x-y)+z

    elif b=="-":

        sum=(x-y)-z

    elif b=="*":

        sum=(x-y)*z

    elif b=="/":

        sum=(x-y)/z

elif a=="*":

    if b=="+":

        sum=(x*y)+z

    elif b=="-":

        sum=(x*y)-z

    elif b=="*":

        sum=(x*y)*z

    elif b=="/":

        sum=(x*y)/z

elif a=="/":

    if b=="+":

        sum=(x/y)+z

    elif b=="-":

        sum=(x/y)-z

    elif b=="*":

        sum=(x/y)*z

    elif b=="/":

        sum=(x/y)/z

print(int(sum))

 

#1050 윷놀이 : 오일러OJ (euleroj.io)

arr=[]

for i in range(0,3):

    x=list(map(int,input().split()))

    arr.append(x)

for i in range(0,3):

    cnt=0

    for j in range(0,4):

        if arr[i][j]==0:

            cnt+=1

    

    if cnt==1:

        print("A")

    elif cnt==2:

        print("B")

    elif cnt==3:

        print("C")

    elif cnt==4:

        print("D")

    else:

        print("E")

 

#1051 Names : 오일러OJ (euleroj.io)

x=input()

save=0

firstStr=""

secondStr=""

for i in range(0,len(x)):

    if x[i]!=" ":

            firstStr+=x[i]

    else:

        save=i#공백인 문자열의 인덱스

        break

for i in range(save+1,len(x)):

    secondStr+=x[i]

print("%s, %s"%(secondStr,firstStr))

 

 

#1135 홀수 모으기 : 오일러OJ (euleroj.io)

a=int(input())

sum=0

for i in range(1,2*a,2):

    for j in range(1,i+1,2):

        sum+=j

print(sum)