INF = 10 ** 9
MOD = 10 **9 + 7
import sys
sys.setrecursionlimit(100000000)
dy = (-1,0,1,0)
dx = (0,1,0,-1)
from bisect import bisect_left

def main():
    n = int(input())
    n = min(n,10)
    ushi = 0
    power = 1
    for _ in range(n):
        ushi += power * 3
        power *= 10
    ushi += power
    print(ushi%MOD)
if __name__=='__main__':
    main()