elems = [1,2,3,4,5]
def rev(elems):
new_list = []
for i in range(len(elems)):
new_list.append(elems[len(elems) - i - 1])
return new_list
print(rev(elems))
ZWxlbXMgPSBbMSwyLDMsNCw1XQoKZGVmIHJldihlbGVtcyk6CgluZXdfbGlzdCA9IFtdCglmb3IgaSBpbiByYW5nZShsZW4oZWxlbXMpKToKCQluZXdfbGlzdC5hcHBlbmQoZWxlbXNbbGVuKGVsZW1zKSAtIGkgLSAxXSkKCXJldHVybiBuZXdfbGlzdApwcmludChyZXYoZWxlbXMpKQ==