코드업 1467 - 2차원 배열

n, m = 3,4

10 7 4 1
11 8 5 2
12 9 6 3

n, m = 4,5

17 13 9 5 1
18 14 10 6 2
19 15 11 7 3
20 16 12 8 4

r,c = map(int,input().split())
GRAPH = [[0]*c for _ in range(r)]
count = 0
for i in reversed(range(c)): # bigger loop going left 
    for j in range(r): # smaller loop going down 
        count += 1
        GRAPH[j][i] = count # [j] to fill columm, [i] to fill row   
for i in GRAPH:
    print(*i)