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28 lines
763 B
28 lines
763 B
using System;
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using System.Linq;
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namespace TestApp
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{
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internal class t
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{
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public int Calculate()
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{
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var c = int.Parse(Console.ReadLine());
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var data = Console.ReadLine().Split(' ').Select(s => int.Parse(s)).ToArray();
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int result = 0;
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for (int i = 0; i < c - 1; i++)
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{
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for (int j = i + 1; j < c; j++)
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{
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var d1 = Math.Min(data[i], data[j]);
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var d2 = Math.Max(data[i], data[j]);
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if (d2 > 100000) continue;
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if ((d1 != 0 && d2 != 0) && ((float)d1 / d2) >= .9f)
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result++;
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}
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}
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return result;
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}
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}
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}
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