1import copy, sys 2 3N, M = map(int, input().split()) 4L = [list(map(int, input().split())) for _ in range(N)] 5cctv = [] 6direction = [[[(0, 1)], [(0, -1)], [(1, 0)], [(-1, 0)]], 7[[(-1, 0), (1, 0)], [(0, -1), (0, 1)]], 8[[(-1, 0), (0, -1)], [(0, -1), (1, 0)], [(1, 0), (0, 1)], [(0, 1), (-1, 0)]], 9[[(-1, 0), (0, -1), (1, 0)], [(0, -1), (1, 0), (0, 1)], [(1, 0), (0, 1), (-1, 0)], [(0, 1), (-1, 0), (0, -1)]], 10[[(-1, 0), (0, -1), (1, 0), (0, 1)]]] 11res = sys.
์ ๊ทผ์ด ์ด๋ ค์ ์ธํฐ๋ท์ ์ฐธ๊ณ ํ๋ค. ์ฝ๋๋ ๋ณด์ง ์์๋ค. ์์ ๊ธธ์ด๊ฐ i์ด๋ฉด์ ๋ง์ง๋ง ์ซ์๊ฐ j์ธ ๊ณ๋จ ์์ ๊ฐ์๋ฅผ ์ ์ฅํ๋ ๊ฒ์ด ํต์ฌ์ด๋ค. ์ ํ์์ L[i][j] = L[i-1][j-1]+L[i-1][j+1] ์ด๋ค. 1N = int(input()) 2L = [[0]*12 for _ in range(100)] 3L[0] = [0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0] 4 5for i in range(1, N): 6 for j in range(1, 11): 7 L[i][j] = L[i-1][j-1]+L[i-1][j+1] 8 9print (sum(L[N-1])%1000000000)