import java.io.*;
import java.util.*;
public class Main {
	public static void main(String[] args) {
		FastScanner sc = new FastScanner();
		int N = sc.nextInt();
		int[] T = new int[N];
		for(int i = 0; i < N; i++) {
			T[i] = sc.nextInt();
			
		}
		int[][][] dp = new int[2][2501][2501];
		
		for(int i = 0; i < 2; i++) {
			for(int j = 0; j < 2501; j++) {
				Arrays.fill(dp[i][j], -1);
			}
		}
		dp[0][0][0] = 0;
		for(int i = 0; i < N; i++) {
			for(int j = 0; j < 2501; j++) {
				Arrays.fill(dp[(i+1)%2][j], -1);
			}
			for(int j = 0; j < 2501; j++) {
				for(int k = 0; k < 2501; k++) {
					if(dp[i%2][j][k] == -1) continue;
					dp[(i+1) % 2][j][k] = dp[i%2][j][k] + T[i];
					dp[(i+1) % 2][j + T[i]][k] = dp[i%2][j][k];
					dp[(i+1) % 2][j][k + T[i]] = dp[i%2][j][k];
				}
			}
		}
		int min = 2 << 28;
		for(int i = 0; i < 2501; i++) {
			for(int j = 0; j < 2501; j++) {
				if(dp[N%2][i][j] == -1) continue;
				int tmp = dp[(N)%2][i][j];
				tmp = Math.max(i, tmp);
				tmp = Math.max(j, tmp);
				min = Math.min(tmp, min);
			}
		}
		System.out.println(min);
		
	}
	
	
}

class FastScanner {
    private final InputStream in = System.in;
    private final byte[] buffer = new byte[1024];
    private int ptr = 0;
    private int buflen = 0;
    private boolean hasNextByte() {
        if (ptr < buflen) {
            return true;
        }else{
            ptr = 0;
            try {
                buflen = in.read(buffer);
            } catch (IOException e) {
                e.printStackTrace();
            }
            if (buflen <= 0) {
                return false;
            }
        }
        return true;
    }
    private int readByte() { if (hasNextByte()) return buffer[ptr++]; else return -1;}
    private boolean isPrintableChar(int c) { return 33 <= c && c <= 126;}
    private void skipUnprintable() { while(hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++;}
    public boolean hasNext() { skipUnprintable(); return hasNextByte();}
    public String next() {
        if (!hasNext()) throw new NoSuchElementException();
        StringBuilder sb = new StringBuilder();
        int b = readByte();
        while(isPrintableChar(b)) {
            sb.appendCodePoint(b);
            b = readByte();
        }
        return sb.toString();
    }
    public long nextLong() {
        if (!hasNext()) throw new NoSuchElementException();
        long n = 0;
        boolean minus = false;
        int b = readByte();
        if (b == '-') {
            minus = true;
            b = readByte();
        }
        if (b < '0' || '9' < b) {
            throw new NumberFormatException();
        }
        while(true){
            if ('0' <= b && b <= '9') {
                n *= 10;
                n += b - '0';
            }else if(b == -1 || !isPrintableChar(b)){
                return minus ? -n : n;
            }else{
                throw new NumberFormatException();
            }
            b = readByte();
        }
    }
    public int nextInt() {
        if (!hasNext()) throw new NoSuchElementException();
        int n = 0;
        boolean minus = false;
        int b = readByte();
        if (b == '-') {
            minus = true;
            b = readByte();
        }
        if (b < '0' || '9' < b) {
            throw new NumberFormatException();
        }
        while(true){
            if ('0' <= b && b <= '9') {
                n *= 10;
                n += b - '0';
            }else if(b == -1 || !isPrintableChar(b)){
                return minus ? -n : n;
            }else{
                throw new NumberFormatException();
            }
            b = readByte();
        }
    }
}

Measured memory_bytes: 89816