UVA - 10125 – Sumsets

//Data Set is weak ...
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Arrays;

public class Main {

    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringBuffer sb = new StringBuffer();
        String m = "";
        while (true) {
            int n = Integer.parseInt(br.readLine());
            if (n == 0) {
                break;
            }
            long[] arr = new long[n];
            for (int i = 0; i < n; i++) {
                arr[i] = Integer.parseInt(br.readLine().trim());
            }
            Arrays.sort(arr);
            boolean flag = false;
            long max = Integer.MIN_VALUE;
            for (int i = n - 1; i > -1; i--) {
                for (int j = 0; j < n; j++) {
                    if (arr[i] == arr[j]) {
                        continue;
                    }
                    for (int z = j + 1; z < n; z++) {
                        if (arr[z] == arr[i]) {
                            continue;
                        }
                        for (int k = z + 1; k < n; k++) {
                            if (arr[k] == arr[i]) {
                                continue;
                            }
                            if (arr[i] == (arr[j] + arr[k] + arr[z])) {
                                sb.append(arr[i]).append("\n");
                                flag = true;
                                break;
                            }
                        }
                        if (flag) {
                            break;
                        }
                    }
                    if (flag) {
                        break;
                    }
                }
                if (flag) {
                    break;
                }
            }
            if (!flag) {
                sb.append("no solution\n");
            }
        }
        System.out.print(sb);
    }
}