Cira Matra

y = input('unesi n: ')
n = int(y)
matra = []
matra.append([])

# punjenje matre
for i in range(n):
    for j in range(n):
        matra[i].append('*')
    matra.append([])


# printanje matre
def stampajMatru():
    input('')
    print('\n'*100)
    for i in range(n):
        for j in range(n):
            print(matra[i][j] + ' ', end='')
        print('')

x = 0
while x<n:
    matra[0][x] = '@'
    matra[x][0] = '@'
    for z in range(x):
        for r in range(x):
            if r <= x-z:
                matra[z][r] = '@'
    x = x + 1
    stampajMatru()