r=range(1,11,)
for x in r:
    if x%2!=0:
        print(x)
    else:
    print(-x)
77271a2dae9cc4adf3eefdfd6af6e930ae4f7caa
r=range(1,11,)
for x in r:
    if x%2!=0:
        print(x)
    else:
    print(-x)