소스 코드 제출

# n=input()
# a=list(n)
# w=0
#
# for i in range(len(a)-1,-1,-1) :
#     if a[i] == a[-1] :
#         # print("들어감")
#         if int(a[i]) == 0 :
#             continue
#     if a[i] != 0 :
#         print(int(a[i]),end='')
#     w=w+int(a[i])
# print()
# print(w)
'''
1차원 선
2차원 면

# arr = [[1,2,3],[4,5,6]]
arr = [[1,2,3,4,5],[1,2,3]]
print("arr         : ",arr)
print("arr[0]      : ",arr[0])
print("arr[1]      : ",arr[1])
print("len(arr)    : ",len(arr))
print("len(arr[0]) : ",len(arr[0]))

for i in range(len(arr)) :
    for j in range(len(arr[i])) :
        print(arr[i][j],end=' ')
    print()
    

# 길이가 10이고, 모두 0인 일차원 리스트 생성
arr = [0 for i in range(10)]
print(arr)
# 길이가 10인 일차원 리스트를 5개 가지고있는, 이차원 리스트 생성

arr = [ [0 for i in range(10)] for j in range(5) ]
print(arr)

'''


# n=int(input())
# # arr=[[0 for i in range(n)] for j in range(n)]
# # w=1
# #
# #
# # for i in range(len(arr)) :
# #     for j in range(len(arr[i])) :
# #         arr[i][j]=w
# #         w=w+1
# # for i in range(len(arr)) :
# #     for j in range(len(arr[i])) :
# #         print(arr[i][j], end=' ')
# #     print()



# n=int(input())
# arr=[[0 for i in range(n)] for j in range(n)]
# w=1
#
# for i in range(len(arr)) :
#     for j in range(len(arr[i])) :
#         arr[j][i]=w
#         w=w+1
# for i in range(len(arr)) :
#     for j in range(len(arr[i])) :
#         print(arr[i][j], end=' ')
#     print()
#


# n,m=map(int, input().split( ))
# arr=[[0 for i in range(m)] for j in range(n)]
# w=1
#
# for i in range(len(arr)-1,-1,-1) :
#     for j in range(len(arr[i])-1,-1,-1) :
#         arr[i][j]=w
#         w=w+1
#
# for i in range(len(arr)) :
#     for j in range(len(arr[i])) :
#         print(arr[i][j], end=' ')
#     print()




# n,m=map(int, input().split( ))
# arr=[[0 for i in range(m)] for j in range(n)]
# w=1
#
# for j in range(m-1,-1,-1) :
#     for i in range(n-1,-1,-1) :
#         arr[i][j]=w
#         w=w+1
#
# for i in range(len(arr)) :
#     for j in range(len(arr[i])) :
#         print(arr[i][j], end=' ')
#     print()

# 이차원 배열 입력받기
# arr=[]
# for i in range(11) :
#     tmp = list(map(int,input().split()))
#     arr.append(tmp)
# print(arr)


n=int(input()