[백준] 13304번 : 방 배정 - C#

https://www.acmicpc.net/problem/13304

using System;

class Program
{
    static int num(int sum,int k){
        int room=sum%k;
        int c=0;
        if(room==0) c=sum/k;
        else c=(sum/k)+1;
        return c;
    }
    
    static void Main() {
        string[] s=Console.ReadLine().Split(' ');
        int n=int.Parse(s[0]);
        int k=int.Parse(s[1]);
        int[] boy=new int[6];
        int[] girl=new int[6];
        int count=0;
        for(int i=0;i<n;i++){
            string[] s1=Console.ReadLine().Split(' ');
            int e=int.Parse(s1[0]);
            int y=int.Parse(s1[1]);
            if(e==0) girl[y-1]++;
            else boy[y-1]++;
        }
        int sum=0;
        for(int i=0;i<6;i+=2){
            if(i==0){
                sum=boy[i]+boy[i+1]+girl[i]+girl[i+1];
                count+=num(sum,k);
            } 
            else{
                sum=boy[i]+boy[i+1];
                count+=num(sum,k);
                sum=girl[i]+girl[i+1];
                count+=num(sum,k);
            }
        }
        Console.Write(count);
    }
}