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Backend.cs
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Backend.cs
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namespace MyApp;
public class Backend
{
/**
* Failed on 56'th test with wrong answer xd
Postprocessor output
stdout:
50
stderr:
samples: 0 points
group 1: 15 points
group 2: 35 points
group 3: 0 points
total: 50 points
*/
static void A(string[] args)
{
var input = File.ReadAllLines("input.txt");
var config = input[0].Split(' ');
var n = int.Parse(config[0]);
var m = int.Parse(config[1]);
var q = int.Parse(config[2]);
var datacenterInfo = new Dictionary<int, DatacenterInfo>();
for (var i = 1; i < n + 1; i++)
{
datacenterInfo[i] = new DatacenterInfo();
}
int maxD = 1, minD = 1;
/**
* n - # of datacenters
* m - # of servers in each datacenter (same)
* q - # of logs
*
* i - datacenter id
* j - server id
*/
for (var line = 1; line < q + 1; line++)
{
var logEntry = input[line].Split(' ');
var i = 0;
var j = 0;
switch (logEntry[0])
{
case "DISABLE":
i = int.Parse(logEntry[1]);
j = int.Parse(logEntry[2]);
datacenterInfo[i].DisabledServers.Add(j);
datacenterInfo[i].UpdateRa(m);
if (i == maxD)
{
maxD = -1;
}
if (minD != -1)
{
if (datacenterInfo[i].ra > datacenterInfo[minD].ra) continue;
if (datacenterInfo[i].ra == datacenterInfo[minD].ra && i > minD) continue;
minD = i;
}
break;
case "RESET":
i = int.Parse(logEntry[1]);
datacenterInfo[i].DisabledServers.Clear();
datacenterInfo[i].RestartCount++;
datacenterInfo[i].UpdateRa(m);
if (i == minD)
{
minD = -1;
}
if (maxD != -1)
{
if (datacenterInfo[i].ra < datacenterInfo[maxD].ra) continue;
if (datacenterInfo[i].ra == datacenterInfo[maxD].ra && i > maxD) continue;
maxD = i;
}
break;
case "GETMAX":
if (maxD != -1)
{
Console.WriteLine(maxD);
continue;
}
var max = datacenterInfo
.OrderByDescending(v => v.Value.ra)
.ThenBy(v => v.Key)
.First();
maxD = max.Key;
Console.WriteLine(maxD);
break;
case "GETMIN":
if (minD != -1)
{
Console.WriteLine(minD);
continue;
}
var min = datacenterInfo
.OrderBy(v => v.Value.ra)
.ThenBy(v => v.Key)
.First();
minD = min.Key;
Console.WriteLine(minD);
break;
default:
// ignore?
break;
}
}
}
class DatacenterInfo
{
public HashSet<int> DisabledServers { get; } = new HashSet<int>();
public int RestartCount { get; set; }
public int ra { get; private set; }
public void UpdateRa(int m)
{
ra = RestartCount * (m - DisabledServers.Count);
}
}
}