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21 lines
285 B
C#
21 lines
285 B
C#
using System;
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namespace _492A
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{
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class Program
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{
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static void Main(string[] args)
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{
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int n = int.Parse(Console.ReadLine());
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int a = 0, b = 0, c = 0;
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while (n > c)
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{
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a++;
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b = a * (a + 1) / 2;
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c += b;
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}
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Console.WriteLine(c > n ? a - 1 : a);
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}
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}
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}
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