import sys


def input(): return sys.stdin.readline().rstrip('\n')


def main():
    N = int(input())
    for a in range(1,N+1):
        for b in range(1,N+1):
            c = N - b - a
            if a <= b <= c:
                print(a, b, c)


if __name__ == '__main__':
    ret = main()
    if ret is not None:
        print(ret)