Problem: Is it rated?

Here it is. The Ultimate Question of Competitive Programming, Codeforces, and Everything. And you are here to answer it.

Another Codeforces round has been conducted. No two participants have the same number of points. For each participant, from the top to the bottom of the standings, their rating before and after the round is known.

It's known that if at least one participant's rating has changed, then the round was rated for sure.

It's also known that if the round was rated and a participant with lower rating took a better place in the standings than a participant with higher rating, then at least one round participant's rating has changed.

In this problem, you should not make any other assumptions about the rating system.

Determine if the current round is rated, unrated, or it's impossible to determine whether it is rated of not.

Input

The first line contains a single integer n (2 ≤ n ≤ 1000) — the number of round participants.

Each of the next n lines contains two integers ai and bi (1 ≤ ai, bi ≤ 4126) — the rating of the i-th participant before and after the round, respectively. The participants are listed in order from the top to the bottom of the standings.

Output

If the round is rated for sure, print "rated". If the round is unrated for sure, print "unrated". If it's impossible to determine whether the round is rated or not, print "maybe".

Examples

Input

6
3060 3060
2194 2194
2876 2903
2624 2624
3007 2991
2884 2884


Output

rated


Input

4
1500 1500
1300 1300
1200 1200
1400 1400


Output

unrated


Input

5
3123 3123
2777 2777
2246 2246
2246 2246
1699 1699


Output

maybe

Note

In the first example, the ratings of the participants in the third and fifth places have changed, therefore, the round was rated.

In the second example, no one's rating has changed, but the participant in the second place has lower rating than the participant in the fourth place. Therefore, if the round was rated, someone's rating would've changed for sure.

In the third example, no one's rating has changed, and the participants took places in non-increasing order of their rating. Therefore, it's impossible to determine whether the round is rated or not.

Solution (in JAVA):

Solution:
  import java.util.*; 
                                    import java.math.*;
                                    import java.io.*;
                                    import java.text.DecimalFormat;
                                    import java.math.BigInteger;
                                    public class Main{
                                        //static int d=20;
                                        static long mod=1000000007 ;
                                        
                                        static ArrayList<ArrayList<Edge>> arr;
                                       // static long[] dp1,dp2;
                                        static int[] a;
                                        static int[] vis,num;
                                        static long max;
                                        static HashSet<String> hs;
                                        //static int flag,ans;
                                        static long max1,max2,ans1;
                                        static long ct=0;
                                        static int flag=0;
                                        static int[] tin,tout,parent,level;
                                        static HashMap<Long,Integer> hm;
                                        static long[] dp1,dp2,dp3,dp4;
                                       
                                           
                                        public static void main(String[] args)  throws IOException {
                                            ///long start=System.currentTimeMillis();
                                            boolean online =false;
                                            String fileName = "A-large (4)";
                                            PrintWriter out; 
                                            if (online) {
                                                s.init(new FileInputStream(new File(fileName + ".in")));
                                                 out= new PrintWriter(new FileWriter(fileName + "out.txt"));
                                            }
                                             else {
                                                s.init(System.in);   
                                            
                                                out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(System.out)));
                                                //out= new PrintWriter(new FileWriter(fileName + "out.txt"));
                                            }//r,b,y,g
                                            int n=s.ni();
                                            int[] a=new int[n];
                                            int[] b=new int[n];
                                            int flag=0;
                                            for(int i=0;i<n;i++){
                                                a[i]=s.ni();
                                                b[i]=s.ni();
                                                if(a[i]!=b[i]){
                                                    flag=1;
                                                }
                                            }
                                            if(flag==1)
                                                out.println("rated");
                                            else{
                                                Arrays.sort(a);
                                                for(int i=0;i<n;i++){
                                                    if(a[n-1-i]!=b[i]){
                                                        flag=1;
                                                        break;
                                                    }
                                                }
                                                if(flag==1)
                                                    out.println("unrated");
                                                else
                                                    out.println("maybe");
                                            }
                                            out.close();    
                             
                                        }
                                        
                                        public static int gcd(int a, int b){
                                                if (a == 0) return b;
                                                return gcd(b % a, a);
                                        }
                                            
                                        public static void cfs(ArrayList<HashSet<Integer>> arr,int c,int p,int g,int[] vis){
                                            vis[c]=1;
                                            if(g!=-1){
                                                if(!arr.get(c).contains(g)){
                                                    flag=1;
                                                    return;
                                                }
                                            }
                                            for(int x:arr.get(c)){
                                                if(x!=p && x!=g && vis[x]==0 ){
                                                    cfs(arr,x,c,p,vis);
                                                }
                                            }

                                        }
                                                              //   public static void dfs(int u,int p){
         //                            //       if(p>=0)
         //                            //           tin[u]=tout[u]=tt++;
         //                            //       if(p>=0)
         //                            //           level[u]=level[p]+1;
         //                            //       parent[u]=p;
         //                            //       for(int x:arr.get(u)){
         //                            //           if(x!=p){
         //                            //               dfs(x,u);
         //                            //               tout[u]=Math.max(tout[u],tout[x]);
         //                            //           }
         //                            //       }
         //                            //       
         //
         //
                                     //   }
                                        public static int lca(int[][] p,int a,int b){
                                            if(level[a]<level[b]){
                                                int x=a;
                                                a=b;
                                                b=x;
                                            }
                                            int log=p[0].length;
                                            for(int i=log-1;i>=0;i--){
                                                if(1<<i<=level[a]-level[b]){
                                                    a=p[a][i];
                                                }
                                            }
                                            if(a==b)
                                                return a;
                                            for(int i=log-1;i>=0;i--){
                                                if(p[a][i]!=p[b][i]){
                                                    a=p[a][i];
                                                    b=p[b][i];
                                                }
                                            }
                                            return p[a][0];
         
                                        }
                                        public static int[][] par(int[] parent){
                                            int n=arr.size();
                                            int[][] p=new int[n][17];
                                            for(int i=0;i<n;i++)
                                                p[i][0]=parent[i];
                                            for(int k=1;k<17;k++){
                                                for(int i=0;i<n;i++){
                                                    if(p[i][k-1]>-1)
                                                        p[i][k]=p[p[i][k-1]][k-1];
                                                    else
                                                        p[i][k]=-1;
                                                }
                                            }
                                            return p;
                                        }
                                        static class Edge {
                                               int from;
                                                int to;
                                                int cost;
                                        
                                               public Edge(int from, int to, int weight) {
                                                   this.from = from;
                                                   this.to = to;
                                                   this.cost= weight;
                                               }
                                        }                               
                                        static class Node {
                                            int start;
                                            int end;
                        
                                            int cost;
                                            int updated;
                        
                                            Node[] nodes;
                        
                                            public Node(int start, int end) {
                                                this.start = start;
                                                this.end = end;
                        
                                                if (start < end) {
                                                    int[] pos = {start, (start + end) / 2, end};
                                                    nodes = new Node[2];
                                                    for (int i = 0; i < 2; i++) {
                                                        nodes[i] = new Node(pos[i] + i, pos[i + 1]);
                                                    }
                                                }
                                            }
                        
                                            public void update(int queryStart, int queryEnd, int value) {
                                                if (queryEnd < start || end < queryStart) {
                                                    return;
                                                }
                        
                                                if (queryStart <= start && end <= queryEnd) {
                                                    cost += value;
                                                    updated += value;
                                                    return;
                                                }
                        
                                                propagate();
                                                for (Node node: nodes) {
                                                    node.update(queryStart, queryEnd, value);
                                                }
                                            }
                        
                                            public int query(int pos) {
                                                if (pos < start || end < pos) {
                                                    return 0;
                                                }
                        
                                                if (start == end) {
                                                    return cost;
                                                }
                        
                                                propagate();
                                                int ans = 0;
                                                for (Node node: nodes) {
                                                    ans = Math.max(ans, node.query(pos));
                                                }
                                                return ans;
                                            }
                        
                                            public void propagate() {
                                                if (updated != 0 && start < end) {
                                                    for (Node node: nodes) {
                                                        node.cost += updated;
                                                        node.updated += updated;
                                                    }
                                                    updated = 0;
                                                }
                                            }
                                        }
                                        public static double nthroot(int n, double A) {
                                            return nthroot(n, A, 0.00000000000001);
                                        }
                                        public static double nthroot(int n, double A, double p) {
                                            if(A < 0) {
                                                System.err.println("A < 0");// we handle only real positive numbers
                                                return -1;
                                            } else if(A == 0) {
                                                return 0;
                                            }
                                            double x_prev = A;
                                            double x = A / n;  // starting "guessed" value...
                                            while(Math.abs(x - x_prev) > p) {
                                                x_prev = x;
                                                x = ((n - 1.0) * x + A / Math.pow(x, n - 1.0)) / n;
                                            }
                                            return x;
                                        }
                                        
                                        static class item implements Comparable<item> {
                                            double r,h;
                                            public item(double x,double y){
                                                r=x;
                                                h=y;
                                            }
                                            public int compareTo(item o){
                                                return (int)(Math.signum(o.r*o.h-r*h));
                                            }
                                            
                                        }
                                       
                                        public static void dfs2(int c,int p,int[] a){
                                            //System.out.println(c+" "+p);
                                           
                                            
                                            
                 
                                        }
        //public static void dfs(int x,int[] vis,Stack<Integer> st){
                                        //    vis[x]=1;
                                        //    ArrayList<Integer> arr2=arr.get(x);
                                        //    Collections.sort(arr2);
                                        //    for(int i=arr2.size()-1;i>=0;i--){
                                        //        int z=arr2.get(i);
                                        //        if(vis[z]==0)
                                        //            dfs(z,vis,st);
                                        //    }
                                        //    st.push(x);
                 //
                                        //}
                                        public static long gcd(long a, long b){
                                                if (a == 0) return b;
                                                return gcd(b % a, a);
                                        }
                                            
                                        public static boolean check(long x){
                                            if(x%4==0 || x%7==0 || x%11==0)
                                                return true;
                                            if(x<4 || x<7 || x<11)
                                                return false;
                                            if(x%2==0){
                                                return check(x/2);
                                            }
                                            else
                                                return check(x/2) && check((x+1)/2);
                                        }
                                        public static int angle(int x1,int x2,int x3,int y1,int y2,int y3){
                                            long val=(y2-y1)*1L*(x3-x2)-(y3-y2)*1L*(x2-x1);
                                            if(val<0)
                                                return 1;
                                            else if(val>0)
                                                return -1;
                                            else
                                                return 0;
                                        }
                                        
                                        static class BIT{
                                        
                                            int N;
                                            long tree[];
                                            
                                            BIT(int N){
                                                this.N = N;
                                                tree = new long[N + 1];
                                            }
                                            
                                            void update(int idx,long val){
                                                while(idx <= N){
                                                    tree[idx]+=val;
                                                    idx += (idx & -idx);
                                                }
                                            }
                                            
                                            long query(int l,int r){
                                                if(l == 1)
                                                    return read(r);
                                                else
                                                    return read(r) - read(l-1);
                                            }
                                            
                                            long read(int idx){
                                                long sum = 0;
                                                while(idx > 0){
                                                    sum += tree[idx];
                                                    idx -= (idx & -idx);
                                                }
                                                return sum;
                                            }
                                        }
                                        public static boolean pal(String a){
                                            int i=0;
                                            int j=a.length()-1;
                                            while(i<j){
                                                if(a.charAt(i)!=a.charAt(j)){
                                                    return false;
                                                }
                                                i++;
                                                j--;
                                            }
                                            return true;
                                                
                                        }
                                        public static long find(long n,long k){
                                            if(n==2){
                                                if(k==1 || k==3)
                                                    return 1;
                                                else
                                                    return 2;
                                            }
                                            long t=pow2(2,n,mod)-1;
                                            long z=(t+1)/2;
                                            if(k==z)
                                                return n;
                                            if(k<z)
                                                return find(n-1,k);
                                            else
                                                return find(n-1,k-z);
                                        }
                                        public static long pow2(long a,long b,long mod){
                                                
                                                long ans=1;
                                               // long z=b;
                                                while(b>0){
                                                   
                                                    if(b%2==1)
                                                        ans=(a*ans)%mod;
                                                    a=(a*a)%mod;
                                                    b/=2;
                                                }
                                              
                                                return  ans;
                                        }
                                         public static long pow3(long a,long b){
                                                
                                                long ans=1;
                                               // long z=b;
                                                while(b>0){
                                                   
                                                    if(b%2==1)
                                                        ans=(a*ans);
                                                    a=(a*a);
                                                    b/=2;
                                                }
                                              
                                                return  ans;
                                        }
                                        public static long fib(long n){
                                            long[][]    f=new long[][]{{1L,1L},{1L,0}};
                                            if(n==0)
                                                return 0;
                                            f=arrpow(f,n-1);
                                            return f[0][0];
                                        }
                                        public static long[][] arrpow(long[][] a,long b){
                                           
                                                int n=a.length;
                                              //  long z=b;
                                                long[][] ans=new long[n][n];
                                                for(int i=0;i<n;i++)
                                                    ans[i][i]=1L;
                                                while(b>0){
                                                    
                                                    if(b%2==1)
                                                        ans=mul(a,ans);
                                                    a=mul(a,a);
                                                    b/=2;
                                                }
                                                
                                                return  ans;
                                        }
                                        public static long[][] mul(long[][] a,long[][] b){
                                            int n=a.length;
                                            int m=b[0].length;
                                            long[][] ans=new long[n][m];
                                            if(n==2 && m==2 && b.length==2){
                                                ans[0][0]=((a[0][0]*b[0][0])%mod+(a[0][1]*b[1][0]))%mod;
                                                ans[0][1]=((a[0][0]*b[0][1])%mod+(a[0][1]*b[1][1]))%mod;
                                                ans[1][0]=((a[1][0]*b[0][0])%mod+(a[1][1]*b[1][0]))%mod;
                                                ans[1][1]=((a[1][1]*b[1][1])%mod+(a[1][0]*b[0][1]))%mod;
                                                return ans;
             
                                            }
                                            for(int i=0;i<n;i++){
                                                for(int j=0;j<m;j++){
                                                    for(int k=0;k<b.length;k++){
                                                        ans[i][j]=(ans[i][j]+(a[i][k]*b[k][j])%mod)%mod;
                                                    }
                                                }
                                            }
                                            return ans; 
                                        }
                                         static class name implements Comparable<name> {
                                            long l,b,h;
                                            public name(long   x,long y,long z){
                                                {
                                                    l=x;
                                                    b=y;        
                                                }
                                                
                                                
                                                h=z;
                                            }
                                            public int compareTo(name o){
                                                return -(int)(l*b-o.l*o.b);
                                            }
                                            
                                        }
                                        public static class s {
                                            static BufferedReader reader;
                                            static StringTokenizer tokenizer;
                                        
                                            /** call this method to initialize reader for InputStream */
                                            static void init(InputStream input) {
                                                reader = new BufferedReader(
                                                            new InputStreamReader(input) );
                                                tokenizer = new StringTokenizer("");
                                            }   
                                        
                                            /** get next word */
                                            static String ns() throws IOException {
                                                while ( ! tokenizer.hasMoreTokens() ) {
                                                    //TODO add check for eof if necessary
                                                    tokenizer = new StringTokenizer(
                                                        reader.readLine() );
                                                }
                                                return tokenizer.nextToken();
                                            }
                                        
                                            static int ni() throws IOException {
                                                return Integer.parseInt( ns() );
                                            }
                                        
                                            static double nd() throws IOException {
                                                return Double.parseDouble( ns() );
                                            }
                                            static long nl() throws IOException {
                                                return Long.parseLong( ns() );
                                            }
                                        }
                                    }