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[BOJ] #9084. 동전 / 골드5 / 120분 / 힌트, 성공
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import sys
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input = sys.stdin.readline
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T = int(input())
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for _ in range(T):
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N = int(input()) # 동전의 가지 수
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coins = list(map(int, input().split())) # N가지 동전의 각 금액
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M = int(input()) # 목표 금액
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dp = [0] * (M+1)
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dp[0] = 1
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for coin in coins:
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for i in range(coin, M + 1):
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dp[i] += dp[i - coin]
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print(dp[M])

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