9 lines
258 B
Python
Executable file
9 lines
258 B
Python
Executable file
#!/usr/bin/env python3
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for _ in range(int(input())):
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n, m, k, l = map(int, input().split())
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m *= l
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d = {0: m, k: m - k + n*l}
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for i, a in enumerate(sorted(map(int, input().split()))):
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d[a] = m - a + i*l
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print(min(d.values()) + l)
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