题解 | 杨辉三角

import sys
n=int(sys.stdin.readline().strip())
a=[[0]*i for i in range(1,n+1)]
for i in range(n):
    for j in range(i+1):
        if j==0:
            a[i][j]=1
        elif i==j:
            a[i][j]=1
        else:
            a[i][j]=a[i-1][j-1]+a[i-1][j]
        print(a[i][j],end=' ')
    print()