C codeforce

/*  TAHMID RAHMAN
    DAMIAN FOREVER
     MATH LOVER
    NEVER GIVE UP
*/
#include<bits/stdc++.h>
using namespace std;
#define pi acos(-1.0)
#define fastio ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
#define ll long long
#define pb push_back
#define fi first
#define se second
#define in insert
#define mp make_pair
#define GCD(a,b) __gcd(a,b);
#define endl "\n"
#define FRU freopen("out.txt","w",stdout)
#define FRO freopen("in.txt","r",stdin)
#define INFLL 9223372036854775807
#define debug 0
#define MAXN   100001
#define ar array
const int mxN=2e5;
const int MOD=1e9+7;
bool sortbysec(const pair<int,int> &a,const pair<int,int> &b){return (a.second < b.second);}
//Don't hesitate to ask me if you don't understand my code.......Happy coding,Tahmid...;
int main()
{
    fastio;
    char s='L',t='R';
    ll n,i;
    cin>>n;
    vector<ll>v(n);
    vector<char>co;
    for(i=0;i<n;i++)
        cin>>v[i];
    ll l=0,h=n-1;
    ll cur=0;
    if(v[l]<v[h])
    {
        cur=v[l];
        l++;
        co.pb(s);
    }
    else
    {
        cur=v[h];
        h--;
        co.pb(t);
    }
    while(l<=h)
    {

        if(cur>v[l]&&cur>v[h])
            break;
        else if(cur<v[l]&&v[h]<cur)
        {
            co.pb(s);
            l++;
            cur=v[l];
        }
        else if(cur<v[h]&&v[l]<cur)
        {
            co.pb(t);
            h--;
            cur=v[h];
        }
        else if(v[l]>cur&&v[h]>cur)
        {
            if(v[l]>v[h])
            {
                cur=v[h];
                h--;
               co.pb(t);
            }
            else
            {
                cur=v[l];
                l++;
                co.pb(s);

            }
        }
        else if(l==h)
        {
            if(v[l]>cur)
            {

                co.pb(s);
                break;

            }
            else
                break;

        }

    }
    cout<<co.size()<<endl;
    for(auto x:co)
    {
        cout<<x;
    }
    cout<<endl;
}