题解 | #星际穿越#
星际穿越
https://www.nowcoder.com/practice/53e4c208b8cf497086ecd65ef45349bb
using System;
using System.Collections.Generic;
public class Program {
public static void Main() {
double max = double.Parse(Console.ReadLine());
double res = (Math.Sqrt(4*max + 1) - 1) / 2;
Console.WriteLine((long)res);
}
}
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