Bizon the Champion isn't just charming, he also is very smart.

While some of us were learning the multiplication table, Bizon the Champion had fun in his own manner. Bizon the Champion painted an n × m multiplication table, where the element on the intersection of the i-th row and j-th column equals i·j (the rows and columns of the table are numbered starting from 1). Then he was asked: what number in the table is the k-th largest number? Bizon the Champion always answered correctly and immediately. Can you repeat his success?

Consider the given multiplication table. If you write out all n·m numbers from the table in the non-decreasing order, then the k-th number you write out is called the k-th largest number.

Input

The single line contains integers n, m and k (1 ≤ n, m ≤ 5·105; 1 ≤ k ≤ n·m).

Output

Print the k-th largest number in a n × m multiplication table.

Examples

Input

2 2 2


Output

2


Input

2 3 4


Output

3


Input

1 10 5


Output

5

Note

A 2 × 3 multiplication table looks like this:
    
    
      
    1 2 3  
    2 4 6  
      
    
import java.io.*;
import java.util.*;
import java.math.*;

 
 public class Main	{
   static class Pair implements Comparable<Pair>{
   int a;
   int b;
   public Pair(int x,int y){a=Math.min(x, y);b=Math.max(x, y);}
   public Pair(){}
   public int compareTo(Pair p){
	 return p.a - a;
   }
@Override
public int hashCode() {
	final int prime = 31;
	int result = 1;
	result = prime * result + a;
	result = prime * result + b;
//	out.println("hashcode = "+result);
	return result;
}
@Override
public boolean equals(Object obj) {
	Pair cur = (Pair)obj;
	if((a==cur.a && b==cur.b) || (a==cur.b && b==cur.a))return true;
	return false;
}
 }
   static class cell implements Comparable<cell>{
	   int a,b;
	   long dis;
	   public cell(int x,int y,long z) {a=x;b=y;dis=z;}
	   public int compareTo(cell c) {
		   return Long.compare(dis,c.dis);
	   }
   }
static class TrieNode{
	TrieNode left;
	TrieNode right;
	int op;
	int data;
	public TrieNode() {}
}
  public static long gcd(long a,long b)
  {
    if(a<b)

      return gcd(b,a);
    if(b==0)
      return a;
    return gcd(b,a%b);
    
  }
  static long lcm(long a,long b) {
	  return a*b / gcd(a,b);
  }
  //static long ans = 0;
  static long mod = (long)(1e9+7);///998244353;
   
    public static void main(String[] args) throws Exception {
       new Thread(null, null, "Anshum Gupta", 99999999) {
            public void run() {
                try {
                    solve();
                } catch(Exception e) {
                    e.printStackTrace();
                    System.exit(1);
                }
            }
        }.start();
    }

static long pow(long x,long y){
    if(y == 0)return 1;
    if(y==1)return x;
    long a = pow(x,y/2);
    a = (a*a)%mod;
    if(y%2==0){
        return a;
    }
    return (a*x)%mod;
}

static long mxx;
static int mxN = (int)(3e5+5);
static long[]fact,inv_fact;
static long my_inv(long a) {
	return pow(a,mod-2);
}
static long bin(int a,int b) {
	if(a < b || a<0 || b<0)return 0;
    return ((fact[a]*inv_fact[a-b])%mod * inv_fact[b])%mod;
}
//static ArrayList<ArrayList<Integer>>adj;
//static boolean[]vis;
//static Long[]p;
//static long val;
//
//static int[]bfs(int a){
//	Queue<Integer> q = new  LinkedList<Integer>();
//	
//	vis = new boolean[n+1];
//	int[]dis = new int[n+1];
//	q.add(a);
//	dis[a] = 0;
//	vis[a] = true;
//	while(!q.isEmpty()) {
//		int cur = q.poll();
//	//	vis[cur] = true;
//	//	if(cur == b)break;
//		for(int x : adj.get(cur)) {
//			if(vis[x])continue;
//			q.add(x);
//			dis[x] = dis[cur]+1;
//			vis[x] = true;
//		}
//	}
//	return dis;
//}
static long f(long x,long n, long m) {
	long ans = 0;
	for(int i=1;i<=n;i++) {
		ans += Math.min((x-1)/i, m);
	}
	return ans;
}
 public static void solve() throws Exception {
   // solve the problem here
   MyScanner s = new MyScanner();
        out = new PrintWriter(new BufferedOutputStream(System.out), true);
        int tc = 1;//s.nextInt();
        mxx = (long)(1e18+5);
//       fact=new long[mxN];
//       inv_fact = new long[mxN];
//       fact[0]=inv_fact[0]=1L;
//       for(int i=1;i<mxN;i++) {
//    	   fact[i] = (i*fact[i-1])%mod;
//    	   inv_fact[i] = my_inv(fact[i]);
//       }
       
        while(tc-->0){
        	long n = s.nextLong();
        	long m = s.nextLong();
        	long k = s.nextLong();
        	long l = 1, r= n*m + 1;
        	while(l < r) {
        		long mid = (l+r)>>1;
        	if(f(mid,n,m) <  k) l = mid+1;
        	else r = mid;
        	}
        	out.println(l - 1);
        	
        }
        	
           
        out.flush();
}
 
     
 
 
 
    //-----------PrintWriter for faster output---------------------------------
    public static PrintWriter out;
 
    //-----------MyScanner class for faster input----------
    public static class MyScanner {
        BufferedReader br;
        StringTokenizer st;
 
        public MyScanner() {
            br = new BufferedReader(new InputStreamReader(System.in));
        }
 
        String next() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }
 
        int nextInt() { return Integer.parseInt(next()); }
        long nextLong() { return Long.parseLong(next()); }
        double nextDouble() { return Double.parseDouble(next()); }
         
        String nextLine(){
            String str = "";
            try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        }
    }
    //--------------------------------------------------------
}
