Z 436 NUMBER PATTERN-2

/*

1
01
101
0101
10101

*/
rows = int(input())
count=0
for row in range(1, rows+1):
    for column in range(1, row + 1):
        if((row+column)%2==0):
            print(1, end='')
        else:
            print(0, end='')
    print('')