import java.util.*;

public class Rand_bob {
  public static Scanner in;
  public static int p, n[];

  public static void main(String[] args) {
    in = new Scanner(System.in);
    p = in.nextInt();
    int lim = (int)Math.ceil(p/40.)+1;

    n = new int[p];
    for (int i = 0; i < p; i++) {
      n[i] = in.nextInt();
    }

    int[] ab, ac, bc; // "x" in a(g1)b(g2)x, a(g1)x(g2)c, x(g1)b(g2)c
    int[] count; // # occurrences of a(g1)b(g2)c
    int[] start; // first occurrence of a(g1)b(g2)c

    ab = new int[100];
    ac = new int[100];
    bc = new int[100];
    count = new int[1000];
    start = new int[1000];

    // Over all correlations, the earliest so far:
    int bests = p, bestg1 = p, bestg2 = p, besta = -1, bestb = -1,
        bestc = -1;

    for (int g1 = 1; g1 < p; g1++) { // gap between a and b
      for (int g2 = 1; g2 < p-g1; g2++) { // gap between b and c
        Arrays.fill(ab,-1);
        Arrays.fill(ac,-1);
        Arrays.fill(bc,-1);
        Arrays.fill(count,0);
        Arrays.fill(start,0);
        for (int i = 0; i < p-g1-g2; i++) {
          int a = n[i], b = n[i+g1], c = n[i+g1+g2];

          // all three arrays should be consistent:
          if (ab[a*10+b] == -1 && bc[b*10+c] == -1 && ac[a*10+c] == -1) {
            ab[a*10+b] = c; bc[b*10+c] = a; ac[a*10+c] = b;
            count[a*100+b*10+c] = 1;
            start[a*100+b*10+c] = i; // first occurrence of this triple
          }
          else {
           if (ab[a*10+b] == c && bc[b*10+c] == a && ac[a*10+c] == b) {
              count[a*100+b*10+c]++;
            }
            else { // kill counts for inconsistent
              count[a*100+b*10+c] = -p;
              if (ab[a*10+b] >= 0) count[a*100+b*10+ab[a*10+b]] = -p;
              if (bc[b*10+c] >= 0) count[bc[b*10+c]*100+b*10+c] = -p;
              if (ac[a*10+c] >= 0) count[a*100+ac[a*10+c]*10+c] = -p;
            }
          }
        }
        // now we have to find the earliest starting location:
        int min = p;
        for (int i = 0; i < 10; i++) {
          for (int j = 0; j < 10; j++) {
            if (ab[i*10+j] >= 0) { 
              int c = ab[i*10+j];
              int s = start[i*100+j*10+c];
              int t = count[i*100+j*10+c];
              if (t >= lim && s <= bests) {
                if (s < bests || (s == bests && g1 < bestg1)) {
                   bests = s; besta = i; bestb = j; bestc = c;
                   bestg1 = g1; bestg2 = g2;
                }
              }
            }
          }
        }
      }
    }
    if (bests == p) {
      System.out.println("random sequence");
    } else {
      System.out.println("triple correlation "+besta+"("+bestg1+")"+bestb
                         +"("+bestg2+")"+bestc+" found");
    }
  }
}