题解 | 二维斐波那契数列
二维斐波那契数列
https://www.nowcoder.com/practice/a1951ca9431646ff8f9bc6f6d24d1e0a
import sys
for line in sys.stdin:
a = line.split()
n,m=int(a[0]) , int(a[1])
nm=[m*[1] for _ in range(n)]
for i in range(1,n):
for j in range(1,m):
nm[i][j]=nm[i][j-1]+nm[i-1][j]
result=nm[n-1][m-1]%(10**9+7)
print(result)
