23 lines
504 B
Python
23 lines
504 B
Python
import io
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import sys
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sys.stdin = io.StringIO('''5 5
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4 8 2 9 1''') # 20
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n, k = map(int, input().split())
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a = list(map(int, input().split()))
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dp = [[-1] * k for i in range(n + 1)]
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dp[0][0] = 0
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for i in range(n + 1):
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for j in range(k):
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if dp[i - 1][j] != -1:
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dp[i][j] = dp[i - 1][j]
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tmp = (j - a[i - 1] % k + k) % k
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if dp[i - 1][tmp] != -1:
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dp[i][j] = max(dp[i][j], dp[i - 1][tmp] + a[i - 1])
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if dp[n][0] == 0:
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print(-1)
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else:
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print(dp[n][0])
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