[백준] 2875번 : 대회 or 인턴 - C#

https://www.acmicpc.net/problem/2875

using System;

class Program
{
    static void Main() {
        string[] s=Console.ReadLine().Split(' ');
        int n=int.Parse(s[0]);
        int m=int.Parse(s[1]);
        int k=int.Parse(s[2]);
        
        int c=n/2;
        
        int count=c>=m?m:c;
        int re=n+m-3*count;
        n=n-2*count;
        m=m-count;
        k-=re;
        
        if(k>0){
            int a=k/3;
            int b=k%3;
            
            if(b==0) count-=a;
            else count-=a+1;
        }
        Console.Write(count);
    }
}