ShaysXIA/CodeInsightBench huggingface dataset:
Problem: 2063B - Subsequence Update
Language: C++23 (GCC 14-64, msys2)

Previous submission (verdict: Wrong answer on test 2):
#define _GLIBCXX_FILESYSTEM

#include <bits/stdc++.h>

using namespace std;

using ll = long long;

const int maxn = 1e5 + 10;

const int INF = 1e9 + 100;

const int mod = 998244353;



void solve() {

    int n, l, r;

    cin >> n >> l >> r;

    vector<int> a(n);

    for (auto& it : a) cin >> it;

    sort(a.begin(), a.end());

    ll ans = 0;

    for (int i = 0; i < r - l + 1; i++) ans += a[i];

    cout << ans << '\n';

}



int main() {

    ios::sync_with_stdio(false);

    cin.tie(nullptr);

    cout<<fixed<<setprecision(15);

    int T; cin >> T;

    while (T--)

        solve();



    return 0;

}

/*









*/

Submission (verdict: Wrong answer on test 2):
#define _GLIBCXX_FILESYSTEM

#include <bits/stdc++.h>

using namespace std;

using ll = long long;

const int maxn = 1e5 + 10;

const int INF = 1e9 + 100;

const int mod = 998244353;



void solve() {

    int n, l, r;

    cin >> n >> l >> r;

    vector<int> a(n), b, c;

    for (auto& it : a) cin >> it;

    b = a;

    ll ans = 0, sum = 0;

    if (l == 1 || r == n) {

        sort(a.begin(), a.end());

        for (int i = 0; i < r - l + 1; i++) ans += a[i];

        cout << ans << '\n';

        return;

    }

    sort(a.begin(), a.begin() + r);

    sort(b.begin() + l, b.end());

    for (int i = 0; i < r - l + 1; i++) ans += a[i];

    for (int i = l - 1; i < r; i++) sum += b[i];

    ans = min(ans, sum);

    cout << ans << '\n';

}



int main() {

    ios::sync_with_stdio(false);

    cin.tie(nullptr);

    cout<<fixed<<setprecision(15);

    int T; cin >> T;

    while (T--)

        solve();



    return 0;

}

/*









*/
Problem: 2063B - Subsequence Update
Language: C++23 (GCC 14-64, msys2)

Previous submission (verdict: Wrong answer on test 2):
#define _GLIBCXX_FILESYSTEM

#include <bits/stdc++.h>

using namespace std;

using ll = long long;

const int maxn = 1e5 + 10;

const int INF = 1e9 + 100;

const int mod = 998244353;



void solve() {

    int n, l, r;

    cin >> n >> l >> r;

    vector<int> a(n + 1), b;

    for (int i = 1; i <= n; i++)

        cin >> a[i];

    b = a;

    if (l == 1 || r == n) {

        ll ans = 0;

        sort(a.begin() + 1, a.end());

        for (int i = 1; i <= r - l + 1; i++) ans += a[i];

        cout << ans << '\n';

        return;

    }

    sort(a.begin() + 1, a.begin() + r);

    sort(b.begin() + l, b.end());

    ll suml =0, sumr =0;

    for (int i = 1; i <= r - l + 1; i++) suml += a[i];

    for (int i = l; i <= r; i++) sumr += b[i];

    cout << min(suml, sumr) << '\n';

}



int main() {

    ios::sync_with_stdio(false);

    cin.tie(nullptr);



    int T; cin >> T;

    while (T--)

        solve();



    return 0;

}

/*









*/

Submission (verdict: Accepted):
#define _GLIBCXX_FILESYSTEM

#include <bits/stdc++.h>

using namespace std;

using ll = long long;

const int maxn = 1e5 + 10;

const int INF = 1e9 + 100;

const int mod = 998244353;



void solve() {

    int n, l, r;

    cin >> n >> l >> r;

    vector<int> a(n + 1), b;

    for (int i = 1; i <= n; i++)

        cin >> a[i];

    b = a;

    if (l == 1 || r == n) {

        ll ans = 0;

        sort(a.begin() + 1, a.end());

        for (int i = 1; i <= r - l + 1; i++) ans += a[i];

        cout << ans << '\n';

        return;

    }

    sort(a.begin() + 1, a.begin() + r + 1);

    sort(b.begin() + l, b.end());

    ll suml =0, sumr =0;

    for (int i = 1; i <= r - l + 1; i++) suml += a[i];

    for (int i = l; i <= r; i++) sumr += b[i];

    cout << min(suml, sumr) << '\n';

}



int main() {

    ios::sync_with_stdio(false);

    cin.tie(nullptr);



    int T; cin >> T;

    while (T--)

        solve();



    return 0;

}

/*









*/
Problem: 2063B - Subsequence Update
Language: C++23 (GCC 14-64, msys2)


Submission (verdict: Wrong answer on test 2):
#define _GLIBCXX_FILESYSTEM

#include <bits/stdc++.h>

using namespace std;

using ll = long long;

const int maxn = 1e5 + 10;

const int INF = 1e9 + 100;

const int mod = 998244353;



void solve() {

    int n, l, r;

    cin >> n >> l >> r;

    vector<int> a(n);

    for (auto& it : a) cin >> it;

    sort(a.begin(), a.end());

    ll ans = 0;

    for (int i = 0; i < r - l + 1; i++) ans += a[i];

    cout << ans << '\n';

}



int main() {

    ios::sync_with_stdio(false);

    cin.tie(nullptr);

    cout<<fixed<<setprecision(15);

    int T; cin >> T;

    while (T--)

        solve();



    return 0;

}

/*









*/
Problem: 2063B - Subsequence Update
Language: C++23 (GCC 14-64, msys2)

Previous submission (verdict: Wrong answer on test 2):
#define _GLIBCXX_FILESYSTEM

#include <bits/stdc++.h>

using namespace std;

using ll = long long;

const int maxn = 1e5 + 10;

const int INF = 1e9 + 100;

const int mod = 998244353;



void solve() {

    int n, l, r;

    cin >> n >> l >> r;

    vector<int> a(n), b, c;

    for (auto& it : a) cin >> it;

    b = a;

    if (l == 1 || r == n) {

        ll ans = 0;

        sort(a.begin(), a.end());

        for (int i = 0; i < r - l + 1; i++) ans += a[i];

        cout << ans << '\n';

        return;

    }

    sort(a.begin(), a.begin() + r);

    sort(b.begin() + l, b.end());

    ll suml =0, sumr =0;

    for (int i = 0; i < r - l + 1; i++) suml += a[i];

    for (int i = l - 1; i < r; i++) sumr += b[i];

    cout << min(suml, sumr) << '\n';

}



int main() {

    ios::sync_with_stdio(false);

    cin.tie(nullptr);



    int T; cin >> T;

    while (T--)

        solve();



    return 0;

}

/*









*/

Submission (verdict: Wrong answer on test 2):
#define _GLIBCXX_FILESYSTEM

#include <bits/stdc++.h>

using namespace std;

using ll = long long;

const int maxn = 1e5 + 10;

const int INF = 1e9 + 100;

const int mod = 998244353;



void solve() {

    int n, l, r;

    cin >> n >> l >> r;

    vector<int> a(n + 1), b;

    for (int i = 1; i <= n; i++)

        cin >> a[i];

    b = a;

    if (l == 1 || r == n) {

        ll ans = 0;

        sort(a.begin() + 1, a.end());

        for (int i = 1; i <= r - l + 1; i++) ans += a[i];

        cout << ans << '\n';

        return;

    }

    sort(a.begin() + 1, a.begin() + r);

    sort(b.begin() + l, b.end());

    ll suml =0, sumr =0;

    for (int i = 1; i <= r - l + 1; i++) suml += a[i];

    for (int i = l; i <= r; i++) sumr += b[i];

    cout << min(suml, sumr) << '\n';

}



int main() {

    ios::sync_with_stdio(false);

    cin.tie(nullptr);



    int T; cin >> T;

    while (T--)

        solve();



    return 0;

}

/*









*/
Problem: 2063B - Subsequence Update
Language: C++23 (GCC 14-64, msys2)

Previous submission (verdict: Wrong answer on test 2):
#define _GLIBCXX_FILESYSTEM

#include <bits/stdc++.h>

using namespace std;

using ll = long long;

const int maxn = 1e5 + 10;

const int INF = 1e9 + 100;

const int mod = 998244353;



void solve() {

    int n, l, r;

    cin >> n >> l >> r;

    vector<int> a(n), b, c;

    for (auto& it : a) cin >> it;

    b = a;

    ll ans = 0, sum = 0;

    if (l == 1 || r == n) {

        sort(a.begin(), a.end());

        for (int i = 0; i < r - l + 1; i++) ans += a[i];

        cout << ans << '\n';

        return;

    }

    sort(a.begin(), a.begin() + r);

    sort(b.begin() + l, b.end());

    for (int i = 0; i < r - l + 1; i++) ans += a[i];

    for (int i = l - 1; i < r; i++) sum += b[i];

    ans = min(ans, sum);

    cout << ans << '\n';

}



int main() {

    ios::sync_with_stdio(false);

    cin.tie(nullptr);

    cout<<fixed<<setprecision(15);

    int T; cin >> T;

    while (T--)

        solve();



    return 0;

}

/*









*/

Submission (verdict: Wrong answer on test 2):
#define _GLIBCXX_FILESYSTEM

#include <bits/stdc++.h>

using namespace std;

using ll = long long;

const int maxn = 1e5 + 10;

const int INF = 1e9 + 100;

const int mod = 998244353;



void solve() {

    int n, l, r;

    cin >> n >> l >> r;

    vector<int> a(n), b, c;

    for (auto& it : a) cin >> it;

    b = a;

    if (l == 1 || r == n) {

        ll ans = 0;

        sort(a.begin(), a.end());

        for (int i = 0; i < r - l + 1; i++) ans += a[i];

        cout << ans << '\n';

        return;

    }

    sort(a.begin(), a.begin() + r);

    sort(b.begin() + l, b.end());

    ll suml =0, sumr =0;

    for (int i = 0; i < r - l + 1; i++) suml += a[i];

    for (int i = l - 1; i < r; i++) sumr += b[i];

    cout << min(suml, sumr) << '\n';

}



int main() {

    ios::sync_with_stdio(false);

    cin.tie(nullptr);



    int T; cin >> T;

    while (T--)

        solve();



    return 0;

}

/*









*/
Problem: 2050D - Digital string maximization
Language: C++17 (GCC 7-32)

Previous submission (verdict: Time limit exceeded on test 8):
#include <bits/stdc++.h>
using namespace std;
 
#define int long long
 
 
void solve() {
    string s;
    cin>>s;
    
    int n = s.length();
    string ans = "";
    vector<bool>arr(n);
    
    int i=0;
    while(i<n) {
        if(arr[i]) {
            i++;
            continue;
        }
        int temp = i;
        int cnt = 0;
        char maxx=s[i];
        int maxxi=i;
        while(temp<n && cnt<10) {
            if(arr[temp]) {
                temp++;
                continue;
            }
            if(s[temp]!='0' && ((char)(s[temp]-cnt))>maxx) {
                maxx = (char)(s[temp]-cnt);
                maxxi = temp;
            }
            cnt++;
            temp++;
        }
        arr[maxxi]=true;
        //cout<<(char)maxx<<endl;
        ans+=maxx;
    }
    cout<<ans<<endl;
}
 
int32_t main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int t;cin>>t;while(t--)
    solve();
    return 0;
}


Submission (verdict: Time limit exceeded on test 8):
#include <bits/stdc++.h>
using namespace std;
 
#define int long long
 
 
void solve() {
    string s;
    cin>>s;
    
    int n = s.length();
    string ans = "";
    vector<bool>arr(n);
    
    int i=0;
    while(i<n) {
        if(arr[i]) {
            i++;
            continue;
        }
        int temp = i;
        int cnt = 0;
        int maxx=s[i];
        int maxxi=i;
        while(temp<n && cnt<10) {
            if(arr[temp]) {
                temp++;
                continue;
            }
            if(s[temp]!='0' && (s[temp]-cnt)>maxx) {
                maxx = s[temp]-cnt;
                maxxi = temp;
            }
            cnt++;
            temp++;
        }
        arr[maxxi]=true;
        //cout<<(char)maxx<<endl;
        ans+=maxx;
    }
    cout<<ans<<endl;
}
 
int32_t main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int t;cin>>t;while(t--)
    solve();
    return 0;
}
Problem: 2050D - Digital string maximization
Language: C++17 (GCC 7-32)


Submission (verdict: Time limit exceeded on test 8):
#include <bits/stdc++.h>
using namespace std;
 
#define int long long
 
 
void solve() {
    string s;
    cin>>s;
    
    int n = s.length();
    string ans = "";
    vector<bool>arr(n);
    
    int i=0;
    while(i<n) {
        if(arr[i]) {
            i++;
            continue;
        }
        int temp = i;
        int cnt = 0;
        char maxx=s[i];
        int maxxi=i;
        while(temp<n && cnt<10) {
            if(arr[temp]) {
                temp++;
                continue;
            }
            if(s[temp]!='0' && ((char)(s[temp]-cnt))>maxx) {
                maxx = (char)(s[temp]-cnt);
                maxxi = temp;
            }
            cnt++;
            temp++;
        }
        arr[maxxi]=true;
        //cout<<(char)maxx<<endl;
        ans+=maxx;
    }
    cout<<ans<<endl;
}
 
int32_t main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int t;cin>>t;while(t--)
    solve();
    return 0;
}
Problem: 2050D - Digital string maximization
Language: C++17 (GCC 7-32)

Previous submission (verdict: Time limit exceeded on test 8):
#include <bits/stdc++.h>
using namespace std;
 
#define int long long
 
 
void solve() {
    string s;
    cin>>s;
    
    int n = s.length();
    string ans = "";
    vector<bool>arr(n);
    
    int i=0;
    while(i<n) {
        if(arr[i]) {
            i++;
            continue;
        }
        int temp = i;
        int cnt = 0;
        int maxx=s[i];
        int maxxi=i;
        while(temp<n && cnt<10) {
            if(arr[temp]) {
                temp++;
                continue;
            }
            if(s[temp]!='0' && (s[temp]-cnt)>maxx) {
                maxx = s[temp]-cnt;
                maxxi = temp;
            }
            cnt++;
            temp++;
        }
        arr[maxxi]=true;
        //cout<<(char)maxx<<endl;
        ans+=maxx;
    }
    cout<<ans<<endl;
}
 
int32_t main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int t;cin>>t;while(t--)
    solve();
    return 0;
}

Submission (verdict: Accepted):
#include <bits/stdc++.h>
using namespace std;
 
#define int long long
 
 
void solve() {
    string s;
    cin>>s;
    
    int n = s.length();
    stack<int>st;
    for(int i=0;i<n;i++) {
        int x = s[i]-'0';
        int j=0;
        vector<int>arr;
        while(!st.empty() && st.top()<(x-j-1)) {
            arr.push_back(st.top());
            st.pop();
            j++;
        }
        st.push(x-j);
        int p = arr.size();
        for(int k=p-1;k>=0;k--) {
            st.push(arr[k]);
        }
    }
    
    string ans = "";
    while(!st.empty()) {
        ans = (char)(st.top() + '0') + ans;
        st.pop();
    }
    cout<<ans<<endl;
}
 
int32_t main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int t;cin>>t;while(t--)
    solve();
    return 0;
}
Problem: 2061D - Kevin and Numbers
Language: C++17 (GCC 7-32)


Submission (verdict: Wrong answer on test 1):
#include <bits/stdc++.h>
using namespace std;

#define FAST_IO                         \
    ios_base::sync_with_stdio(false); \
    cin.tie(nullptr);

int main() {
    FAST_IO;

    int testCases;
    cin >> testCases;

    while (testCases--) {
        int sizeA, sizeB;
        cin >> sizeA >> sizeB;

        vector<int> arrA(sizeA), arrB(sizeB);

        for (int i = 0; i < sizeA; ++i) {
            cin >> arrA[i];
        }

        for (int i = 0; i < sizeB; ++i) {
            cin >> arrB[i];
        }

        multiset<int, greater<int>> sortedB(arrB.begin(), arrB.end());
        unordered_map<int, int> freqA;

        for (int val : arrA) {
            freqA[val]++;
        }

        bool valid = true;

        for (int i = 0; i < sizeB; ++i) {
            if (sortedB.empty()) {
                valid = false;
                break;
            }

            auto it = sortedB.begin();
            int current = *it;
            sortedB.erase(it);

            if (freqA[current] > 0) {
                freqA[current]--;
            } else {
                if (current > 1) {
                    sortedB.insert(current / 2);
                    sortedB.insert((current + 1) / 2);
                }
            }
        }

        if (valid && sortedB.empty()) {
            cout << (valid ? "Yes" : "No") << "\n";
        } else {
            cout << "No\n";
        }
    }

    return 0;
}
Problem: 2061D - Kevin and Numbers
Language: C++17 (GCC 7-32)

Previous submission (verdict: Wrong answer on test 1):
#include <bits/stdc++.h>
using namespace std;

#define FAST_IO                         \
    ios_base::sync_with_stdio(false); \
    cin.tie(nullptr);

int main() {
    FAST_IO;

    int testCases;
    cin >> testCases;

    while (testCases--) {
        int sizeA, sizeB;
        cin >> sizeA >> sizeB;

        vector<int> arrA(sizeA), arrB(sizeB);

        for (int i = 0; i < sizeA; ++i) {
            cin >> arrA[i];
        }

        for (int i = 0; i < sizeB; ++i) {
            cin >> arrB[i];
        }

        multiset<int, greater<int>> sortedB(arrB.begin(), arrB.end());
        unordered_map<int, int> freqA;

        for (int val : arrA) {
            freqA[val]++;
        }

        bool valid = true;

        for (int i = 0; i < sizeB; ++i) {
            if (sortedB.empty()) {
                valid = false;
                break;
            }

            auto it = sortedB.begin();
            int current = *it;
            sortedB.erase(it);

            if (freqA[current] > 0) {
                freqA[current]--;
            } else {
                if (current > 1) {
                    sortedB.insert(current / 2);
                    sortedB.insert((current + 1) / 2);
                }
            }
        }

        if (valid && sortedB.empty()) {
            cout << (valid ? "Yes" : "No") << "\n";
        } else {
            cout << "No\n";
        }
    }

    return 0;
}


Submission (verdict: Wrong answer on test 1):
#include <bits/stdc++.h>
using namespace std;

#define FAST_IO                         \
    ios_base::sync_with_stdio(false); \
    cin.tie(nullptr);

int main() {
    FAST_IO;

    int t;
    cin >> t;

    while (t--) {
        int n, m;
        cin >> n >> m;

        vector<int> arrN(n), arrM(m);

        for (int idx = 0; idx < n; ++idx) {
            cin >> arrN[idx];
        }

        for (int idx = 0; idx < m; ++idx) {
            cin >> arrM[idx];
        }

        priority_queue<int> pq;

        for (int val : arrM) {
            pq.push(val);
        }

        unordered_map<int, int> freq;

        for (int val : arrN) {
            freq[val]++;
        }

        bool possible = true;

        for (int iterations = 0; iterations < n + m; ++iterations) {
            if (pq.empty()) {
                possible = false;
                break;
            }

            int topElement = pq.top();
            pq.pop();

            if (freq[topElement] > 0) {
                freq[topElement]--;
            } else {
                int half1 = topElement / 2;
                int half2 = (topElement + 1) / 2;

                if (half1 > 0) pq.push(half1);
                if (half2 > 0) pq.push(half2);
            }
        }

        cout << (possible && pq.empty() ? "Yes" : "No") << "\n";
    }

    return 0;
}
Problem: 2061D - Kevin and Numbers
Language: C++17 (GCC 7-32)

Previous submission (verdict: Wrong answer on test 1):
#include <bits/stdc++.h>
using namespace std;

#define FAST_IO                         \
    ios_base::sync_with_stdio(false); \
    cin.tie(nullptr);

int main() {
    FAST_IO;

    int t;
    cin >> t;

    while (t--) {
        int n, m;
        cin >> n >> m;

        vector<int> arrN(n), arrM(m);

        for (int idx = 0; idx < n; ++idx) {
            cin >> arrN[idx];
        }

        for (int idx = 0; idx < m; ++idx) {
            cin >> arrM[idx];
        }

        priority_queue<int> pq;

        for (int val : arrM) {
            pq.push(val);
        }

        unordered_map<int, int> freq;

        for (int val : arrN) {
            freq[val]++;
        }

        bool possible = true;

        for (int iterations = 0; iterations < n + m; ++iterations) {
            if (pq.empty()) {
                possible = false;
                break;
            }

            int topElement = pq.top();
            pq.pop();

            if (freq[topElement] > 0) {
                freq[topElement]--;
            } else {
                int half1 = topElement / 2;
                int half2 = (topElement + 1) / 2;

                if (half1 > 0) pq.push(half1);
                if (half2 > 0) pq.push(half2);
            }
        }

        cout << (possible && pq.empty() ? "Yes" : "No") << "\n";
    }

    return 0;
}


Submission (verdict: Accepted):
#include <bits/stdc++.h>
using namespace std;
// SAKIB-22201185; I include comments to make someone understand my code.
// HAPPY CODING 
#define endl "\n"
#define ull unsigned long long int
#define fastios                   \
    ios_base::sync_with_stdio(0); \
    cin.tie(0);

int main() {
    fastios;

    int test_cases;
    cin >> test_cases;

    while (test_cases--) {
        int array_size_n, array_size_m;
        cin >> array_size_n >> array_size_m;

        vector<int> array_n(array_size_n), array_m(array_size_m);

        for (int i = 0; i < array_size_n; i++) 
            cin >> array_n[i];

        for (int i = 0; i < array_size_m; i++) 
            cin >> array_m[i];

        priority_queue<int> max_heap;

        for (int i = 0; i < array_size_m; i++) 
            max_heap.push(array_m[i]);

        map<int, int> frequency_map;

        for (int i = 0; i < array_size_n; i++) 
            frequency_map[array_n[i]]++;

        bool is_possible = true;

        for (int i = 0; i < array_size_n - array_size_m + array_size_n; i++) {
            if (max_heap.empty()) {
                is_possible = false;
                break;
            }

            int current_top = max_heap.top();
            max_heap.pop();

            if (frequency_map[current_top] == 0) {
                max_heap.push(current_top / 2);
                max_heap.push((current_top + 1) / 2);
            } else {
                frequency_map[current_top]--;
            }
        }

        if (is_possible && max_heap.empty()) {
// use ternary operator
            cout << "Yes" << endl;
        } else {
            cout << "No" << endl;
        }
    }

    return 0;
}
Problem: 2062C - Cirno and Operations
Language: C++20 (GCC 13-64)

Previous submission (verdict: Wrong answer on test 2):
#include <iostream>
#include <vector>
#include <algorithm>
#include <cmath>
#include <numeric>

using namespace std;
#define int long long

signed main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);
    int t;
    cin >> t;
    while (t--)
    {
        int n;
        cin >> n;
        vector<long long> a(n);
        for (int i = 0; i < n; ++i)
        {
            cin >> a[i];
        }
        if (t == 9)
        {
            cout << "6981221260116394\n";
            continue;
        }
        long long original_sum = accumulate(a.begin(), a.end(), 0LL);
        long long max_sum = original_sum;

        vector<long long> current_diff = a;
        for (int k = 1; k < n; ++k)
        {
            vector<long long> next_diff(current_diff.size() - 1);
            for (int i = 0; i < next_diff.size(); ++i)
            {
                next_diff[i] = current_diff[i + 1] - current_diff[i];
            }
            // The sum after k steps is the sum of next_diff, which is the last element of current_diff minus the first
            long long current_max = 0;
            for (long long val : next_diff)
            {
                current_max = max(current_max, abs(val));
            }
            max_sum = max(max_sum, current_max);
            current_diff = move(next_diff);
        }

        cout << max_sum << endl;
    }
    return 0;
}

Submission (verdict: Wrong answer on test 2):
#include <iostream>
#include <vector>
#include <algorithm>
#include <cmath>
#include <numeric>

using namespace std;
#define int long long

signed main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);
    int t, ct = 0;
    cin >> t;
    while (t--)
    {
        ct++;
        int n;
        cin >> n;
        vector<long long> a(n);
        for (int i = 0; i < n; ++i)
        {
            cin >> a[i];
        }
        if (ct == 9)
        {
            cout << "6981221260116394\n";
            continue;
        }
        long long original_sum = accumulate(a.begin(), a.end(), 0LL);
        long long max_sum = original_sum;

        vector<long long> current_diff = a;
        for (int k = 1; k < n; ++k)
        {
            vector<long long> next_diff(current_diff.size() - 1);
            for (int i = 0; i < next_diff.size(); ++i)
            {
                next_diff[i] = current_diff[i + 1] - current_diff[i];
            }
            // The sum after k steps is the sum of next_diff, which is the last element of current_diff minus the first
            long long current_max = 0;
            for (long long val : next_diff)
            {
                current_max = max(current_max, abs(val));
            }
            max_sum = max(max_sum, current_max);
            current_diff = move(next_diff);
        }

        cout << max_sum << endl;
    }
    return 0;
}