fork download

copy

#include<bits/stdc++.h>
using  namespace  std;
 
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
 
#define ordered_set tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update>
 
#define faster  ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
 
#define sq(x)   (x)*(x)
#define PI      acos(-1.0)
#define all(x) x.begin(),x.end()
#define nl      '\n'
 #define mod 1000000007
typedef long long int ll;
typedef unsigned long long int  llu;
 
// PRIME NUMBER TEST//
bool prime(int n)
{
    if(n<2)return false;
    if(n<=3)return true;
    if(n%2==0)return false;
    for(int i=3;i*i<=n;i+=2)
    {
        if(n%i==0)return false;
    }
    return true;
}
 
// Graph Grid //
int dx[]={-1,0,1,0};
int dy[]={0,1,0,-1};
 
int main()
{
    int t;
    cin>>t;
    while(t--)
    {
        int n;
        cin>>n;
        string s;
        cin>>s;
        int mx=0;
        map<char,int>mp;
        for(int i=0;i<n;i++)
        {
            mp[s[i]]++;
            mx=max(mx,mp[s[i]]);
        }
        if(n%2==1 || mx>n/2)cout<<"NO"<<endl;
        else
        {
            vector<char>v;
            for(auto it:mp)
            {
                for(int i=1;i<=it.second;i++)
                {
                    v.push_back(it.first);
                }
            }
            cout<<"YES"<<endl;
            for(int i=0;i<n/2;i++)cout<<v[i];
            for(int i=n-1;i>=n/2;i--)cout<<v[i];
            cout<<endl;
        }
 
    }
}
 
 

Main.java:1: error: illegal character: '#'
#include<bits/stdc++.h>
^
Main.java:1: error: class, interface, or enum expected
#include<bits/stdc++.h>
        ^
Main.java:4: error: illegal character: '#'
#include <ext/pb_ds/assoc_container.hpp>
^
Main.java:4: error: class, interface, or enum expected
#include <ext/pb_ds/assoc_container.hpp>
         ^
Main.java:5: error: illegal character: '#'
#include <ext/pb_ds/tree_policy.hpp>
^
Main.java:8: error: illegal character: '#'
#define ordered_set tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update>
^
Main.java:8: error: class, interface, or enum expected
#define ordered_set tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update>
        ^
Main.java:10: error: illegal character: '#'
#define faster  ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
^
Main.java:10: error: class, interface, or enum expected
#define faster  ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
                                             ^
Main.java:10: error: class, interface, or enum expected
#define faster  ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
                                                        ^
Main.java:12: error: illegal character: '#'
#define sq(x)   (x)*(x)
^
Main.java:12: error: class, interface, or enum expected
#define sq(x)   (x)*(x)
        ^
Main.java:13: error: illegal character: '#'
#define PI      acos(-1.0)
^
Main.java:14: error: illegal character: '#'
#define all(x) x.begin(),x.end()
^
Main.java:15: error: illegal character: '#'
#define nl      '\n'
^
Main.java:16: error: illegal character: '#'
 #define mod 1000000007
 ^
Main.java:18: error: class, interface, or enum expected
typedef unsigned long long int  llu;
^
Main.java:21: error: class, interface, or enum expected
bool prime(int n)
^
Main.java:24: error: class, interface, or enum expected
    if(n<=3)return true;
    ^
Main.java:25: error: class, interface, or enum expected
    if(n%2==0)return false;
    ^
Main.java:26: error: class, interface, or enum expected
    for(int i=3;i*i<=n;i+=2)
    ^
Main.java:26: error: class, interface, or enum expected
    for(int i=3;i*i<=n;i+=2)
                ^
Main.java:26: error: class, interface, or enum expected
    for(int i=3;i*i<=n;i+=2)
                       ^
Main.java:29: error: class, interface, or enum expected
    }
    ^
Main.java:31: error: class, interface, or enum expected
}
^
Main.java:35: error: class, interface, or enum expected
int dy[]={0,1,0,-1};
^
Main.java:37: error: class, interface, or enum expected
int main()
^
Main.java:40: error: class, interface, or enum expected
    cin>>t;
    ^
Main.java:41: error: class, interface, or enum expected
    while(t--)
    ^
Main.java:44: error: class, interface, or enum expected
        cin>>n;
        ^
Main.java:45: error: class, interface, or enum expected
        string s;
        ^
Main.java:46: error: class, interface, or enum expected
        cin>>s;
        ^
Main.java:47: error: class, interface, or enum expected
        int mx=0;
        ^
Main.java:48: error: class, interface, or enum expected
        map<char,int>mp;
        ^
Main.java:49: error: class, interface, or enum expected
        for(int i=0;i<n;i++)
        ^
Main.java:49: error: class, interface, or enum expected
        for(int i=0;i<n;i++)
                    ^
Main.java:49: error: class, interface, or enum expected
        for(int i=0;i<n;i++)
                        ^
Main.java:52: error: class, interface, or enum expected
            mx=max(mx,mp[s[i]]);
            ^
Main.java:53: error: class, interface, or enum expected
        }
        ^
Main.java:55: error: class, interface, or enum expected
        else
        ^
Main.java:58: error: class, interface, or enum expected
            for(auto it:mp)
            ^
Main.java:60: error: class, interface, or enum expected
                for(int i=1;i<=it.second;i++)
                            ^
Main.java:60: error: class, interface, or enum expected
                for(int i=1;i<=it.second;i++)
                                         ^
Main.java:63: error: class, interface, or enum expected
                }
                ^
Main.java:66: error: class, interface, or enum expected
            for(int i=0;i<n/2;i++)cout<<v[i];
            ^
Main.java:66: error: class, interface, or enum expected
            for(int i=0;i<n/2;i++)cout<<v[i];
                        ^
Main.java:66: error: class, interface, or enum expected
            for(int i=0;i<n/2;i++)cout<<v[i];
                              ^
Main.java:67: error: class, interface, or enum expected
            for(int i=n-1;i>=n/2;i--)cout<<v[i];
            ^
Main.java:67: error: class, interface, or enum expected
            for(int i=n-1;i>=n/2;i--)cout<<v[i];
                          ^
Main.java:67: error: class, interface, or enum expected
            for(int i=n-1;i>=n/2;i--)cout<<v[i];
                                 ^
Main.java:68: error: class, interface, or enum expected
            cout<<endl;
            ^
Main.java:69: error: class, interface, or enum expected
        }
        ^
52 errors

Standard output is empty