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())
    En = (4*pow(10,n,MOD) - 1)*pow(3,MOD - 2,MOD)
    print(En%MOD)
if __name__=='__main__':
    main()