"list index out of range"
I wrote the correct code. On my computer, this reference to the last element of the array works. In the online test, an error is issued. What's the matter? last=len(array)-1 res=sum(a)*array[last]
From: https://py.checkio.org/mission/even-last/solve/
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Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.120 YaBrowser/19.10.3.281 Yowser/2.5 Safari/537.36