Envío 3613

Código

def magic_square(square, n):
    for i in range(0, n):
        for j in range(0, n):
            if i == 0 and j == 0:
                continue
            if j == 0:
                square[i][j] += square[i - 1][n - 1]
            else:
                square[i][j] += square[i][j - 1]

    if square[n - 1][n - 1] // (n * n) > 0:
        print("Yes")
    else:
        print("No")


n = int(input())
square = [[int(x) for x in input().split()] for _ in range(n)]
magic_square(square, n)