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Solution.cs
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34 lines (32 loc) · 810 Bytes
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public class Solution
{
public long RepairCars(int[] ranks, int cars)
{
int minRank = int.MaxValue;
foreach (int rank in ranks) minRank = Math.Min(minRank, rank);
long low = 1, high = 1L * minRank * cars * cars, ans = 0;
while (low <= high)
{
long mid = low + (high - low) / 2;
if (Ok(ranks, cars, mid))
{
ans = mid;
high = mid - 1;
}
else
{
low = mid + 1;
}
}
return ans;
}
bool Ok(int[] ranks, int cars, long mid)
{
long total = 0;
for (int i = 0; i < ranks.Length; i++)
{
total += (long)Math.Sqrt(mid / ranks[i]);
}
return total >= cars;
}
}