"""Problem

Read an integer .

Without using any string methods, try to print the following:


Note that "" represents the values in between.

Input Format

The first line contains an integer .

Output Format

Output the answer as explained in the task.

Sample Input 0

3
Sample Output 0

123"""

#Solution1
x = int(input())

for i in range(1,x+1):
    print(i,end="")
#print()



#Solution2
n = int(input())

print(*range(1, n+1), sep="")



