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#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
using namespace std;
#define PI 3.14159265359
#define dmin 1e-9
#define dd double
#define ll long long
#define yes cout << "YES\n"
#define no cout << "NO\n"
#define pb push_back
#define vi vector<ll>
#define vpi vector<pair<ll, int>>
#define srt(a) sort(a.begin(), a.end())
#define rsrt(a) sort(a.rbegin(), a.rend())
#define nn "\n"
#define nl cout << "\n"
#define fast ios_base::sync_with_stdio(false), cin.tie(NULL);
#define loop(i, a, b) for (int i = (a); i < (b); ++i)
#define rloop(i, a, b) for (int i = (a); i <= (b); ++i)
void print(vector<ll> &a) { loop(i, 0, a.size()) cout << a[i] << ' '; }
template <typename T>
using my_ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
 
void mdmerazulislam()
{
    ll n, k, k1;
    cin >> n >> k >> k1;
    vi a(n);
    loop(i, 0, n) cin >> a[i];
    srt(a);
    ll s = 0, mx = 0, cnt = n-k1;
    loop(i,0,n)
    {
        if (i < cnt)
            s += a[i];
        else
            s -= a[i];
    }
 
    ll rst = s;
    for (int i = n - 1; i >= n - k; i--)
    {
        if (i >= cnt)
        {
            s += a[i];
            if (cnt - 1 >= 0)
                s -= 2 * a[cnt - 1];
            cnt--;
            rst = max(s, rst);
        }
    }
    cout << rst << endl;
 
 
}
 
int main()
{
    fast;
 
    int t;
    cin >> t;
    while (t--)
        mdmerazulislam();
 
    return 0;
}

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:2: error: illegal character: '#'
#include <ext/pb_ds/assoc_container.hpp>
^
Main.java:3: error: illegal character: '#'
#include <ext/pb_ds/tree_policy.hpp>
^
Main.java:5: error: class, interface, or enum expected
using namespace std;
^
Main.java:6: error: illegal character: '#'
#define PI 3.14159265359
^
Main.java:6: error: class, interface, or enum expected
#define PI 3.14159265359
        ^
Main.java:7: error: illegal character: '#'
#define dmin 1e-9
^
Main.java:8: error: illegal character: '#'
#define dd double
^
Main.java:9: error: illegal character: '#'
#define ll long long
^
Main.java:10: error: illegal character: '#'
#define yes cout << "YES\n"
^
Main.java:11: error: illegal character: '#'
#define no cout << "NO\n"
^
Main.java:12: error: illegal character: '#'
#define pb push_back
^
Main.java:13: error: illegal character: '#'
#define vi vector<ll>
^
Main.java:14: error: illegal character: '#'
#define vpi vector<pair<ll, int>>
^
Main.java:15: error: illegal character: '#'
#define srt(a) sort(a.begin(), a.end())
^
Main.java:16: error: illegal character: '#'
#define rsrt(a) sort(a.rbegin(), a.rend())
^
Main.java:17: error: illegal character: '#'
#define nn "\n"
^
Main.java:18: error: illegal character: '#'
#define nl cout << "\n"
^
Main.java:19: error: illegal character: '#'
#define fast ios_base::sync_with_stdio(false), cin.tie(NULL);
^
Main.java:20: error: illegal character: '#'
#define loop(i, a, b) for (int i = (a); i < (b); ++i)
^
Main.java:20: error: class, interface, or enum expected
#define loop(i, a, b) for (int i = (a); i < (b); ++i)
        ^
Main.java:20: error: class, interface, or enum expected
#define loop(i, a, b) for (int i = (a); i < (b); ++i)
                                        ^
Main.java:20: error: class, interface, or enum expected
#define loop(i, a, b) for (int i = (a); i < (b); ++i)
                                                 ^
Main.java:21: error: illegal character: '#'
#define rloop(i, a, b) for (int i = (a); i <= (b); ++i)
^
Main.java:21: error: class, interface, or enum expected
#define rloop(i, a, b) for (int i = (a); i <= (b); ++i)
                                         ^
Main.java:21: error: class, interface, or enum expected
#define rloop(i, a, b) for (int i = (a); i <= (b); ++i)
                                                   ^
Main.java:22: error: class, interface, or enum expected
void print(vector<ll> &a) { loop(i, 0, a.size()) cout << a[i] << ' '; }
                                                                      ^
Main.java:26: error: class, interface, or enum expected
void mdmerazulislam()
^
Main.java:29: error: class, interface, or enum expected
    cin >> n >> k >> k1;
    ^
Main.java:30: error: class, interface, or enum expected
    vi a(n);
    ^
Main.java:31: error: class, interface, or enum expected
    loop(i, 0, n) cin >> a[i];
    ^
Main.java:32: error: class, interface, or enum expected
    srt(a);
    ^
Main.java:33: error: class, interface, or enum expected
    ll s = 0, mx = 0, cnt = n-k1;
    ^
Main.java:34: error: class, interface, or enum expected
    loop(i,0,n)
    ^
Main.java:38: error: class, interface, or enum expected
        else
        ^
Main.java:40: error: class, interface, or enum expected
    }
    ^
Main.java:43: error: class, interface, or enum expected
    for (int i = n - 1; i >= n - k; i--)
    ^
Main.java:43: error: class, interface, or enum expected
    for (int i = n - 1; i >= n - k; i--)
                        ^
Main.java:43: error: class, interface, or enum expected
    for (int i = n - 1; i >= n - k; i--)
                                    ^
Main.java:48: error: class, interface, or enum expected
            if (cnt - 1 >= 0)
            ^
Main.java:50: error: class, interface, or enum expected
            cnt--;
            ^
Main.java:51: error: class, interface, or enum expected
            rst = max(s, rst);
            ^
Main.java:52: error: class, interface, or enum expected
        }
        ^
Main.java:57: error: class, interface, or enum expected
}
^
Main.java:63: error: class, interface, or enum expected
    int t;
    ^
Main.java:64: error: class, interface, or enum expected
    cin >> t;
    ^
Main.java:65: error: class, interface, or enum expected
    while (t--)
    ^
Main.java:68: error: class, interface, or enum expected
    return 0;
    ^
Main.java:69: error: class, interface, or enum expected
}
^
50 errors

Standard output is empty