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defaultdict solution in Clear category for Call to Home by U.V
from typing import List
from collections import defaultdict
def total_cost(calls: List[str]) -> int:
cls = defaultdict(list)
for s in calls:
d, _, c = s.split()
cls[d].append((int(c) + 59) // 60)
s0 = 0
for ti in cls.values():
t = sum(ti)
s0 += t if t < 100 else 100 + 2 * (t - 100)
return s0
if __name__ == '__main__':
#These "asserts" using only for self-checking and not necessary for auto-testing
assert total_cost(("2014-01-01 01:12:13 181",
"2014-01-02 20:11:10 600",
"2014-01-03 01:12:13 6009",
"2014-01-03 12:13:55 200")) == 124, "Base example"
assert total_cost(("2014-02-05 01:00:00 1",
"2014-02-05 02:00:00 1",
"2014-02-05 03:00:00 1",
"2014-02-05 04:00:00 1")) == 4, "Short calls but money..."
assert total_cost(("2014-02-05 01:00:00 60",
"2014-02-05 02:00:00 60",
"2014-02-05 03:00:00 60",
"2014-02-05 04:00:00 6000")) == 106, "Precise calls"
Nov. 13, 2024
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