[Python] Don't understand the meaning of this: n, S = map(int, input().split()) (In Dynamic...

I'm trying to learn Dynamic programming but there is some difficult lines of code that are hard to know. Idk what do we suppose to do with these lines of codes:

n, S = map(int, input().split())
w = list(map(int, input().split()))
dp = [0] * (S + 1)
dp[0] = 0

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