diff --git a/1417 D. Make Them Equal.cpp b/1417 D. Make Them Equal.cpp
new file mode 100644
index 0000000..ee37fe5
--- /dev/null
+++ b/1417 D. Make Them Equal.cpp	
@@ -0,0 +1,151 @@
+#include<bits/stdc++.h>
+ 
+using namespace std;
+ 
+template <class T> ostream& operator << (ostream &os, const vector<T> &v) { for (T i : v) os << i << ' '; return os; }
+template <class T> ostream& operator << (ostream &os, const set<T> &v) { for (T i : v) os << i << ' '; return os; }
+template <class T, class S> ostream& operator << (ostream &os, const pair<T, S> &v) { os << v.first << ' ' << v.second; return os; }
+template <class T, class S> ostream& operator << (ostream &os, const map<T, S> &v) { for (auto i : v) os << '(' << i.first << "=>" << i.second << ')' << ' '; return os; }
+template <class T, class S> ostream& operator << (ostream &os, const unordered_map<T, S> &v) { for (auto i : v) os << '(' << i.first << "=>" << i.second << ')' << ' '; return os; }
+ 
+#ifndef ONLINE_JUDGE
+#define trace(...) __f(#__VA_ARGS__, __VA_ARGS__)
+    template <class Arg1> void __f(const char* name, Arg1&& arg1) { cerr << name << " : " << arg1 << endl; }
+    template <class Arg1, class... Args>
+    void __f(const char* names, Arg1&& arg1, Args&&... args) {
+        const char* sep = strchr(names + 1, ',');
+        cerr.write(names, sep - names) << " : " << arg1 << "  ";
+        __f(sep + 1, args...);
+    }
+#else
+#define trace(...) 0
+#pragma GCC optimize ("O3")
+#pragma GCC optimize ("unroll-loops")
+#pragma GCC target("avx2,sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
+#define _CRT_SECURE_NO_WARNINGS
+#endif
+ 
+#define fast_cin() ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
+#define MAX 1000000
+#define ll long long
+#define int ll
+#define db double
+#define str string
+#define pb push_back
+#define For(i,s,e) for (ll i=(s); i<(e); i++)
+#define Forrev(i,s,e) for (ll i=(s); i>=(e); i--)
+#define all(v) v.begin(),v.end()
+ 
+#define vll vector<ll>
+#define vs vector<string>
+#define mapll map<ll,ll>
+#define pll pair<ll,ll>
+#define initialise(a, x) memset(a, x, sizeof(a))
+#define maxheap priority_queue<ll>
+#define minheap priority_queue<ll,vector<ll> ,greater<ll>>
+ 
+#define ff first
+#define ss second
+#define endl "\n"
+#define mp make_pair
+const ll mod=1e9 + 7;
+ 
+ll takemod(ll a) {
+    return ((a%mod)+mod)%mod;
+}
+ 
+ll gcd(ll a, ll b) { 
+    if (b == 0) 
+        return a; 
+    return gcd(b, a % b);        
+}
+ 
+ll fast_exp(ll base, ll expo) {
+    ll res=1;
+    while(expo>0) {
+        if(expo&1) res=(res*base)%mod;
+        base=(base*base)%mod;
+        expo>>=1;}
+    return res;
+}
+ 
+ll modinv(ll a) {
+    return takemod(fast_exp(takemod(a), mod-2));
+}
+ 
+void solve() 
+{
+    int n;
+    cin >> n;
+
+    int arr[n];
+
+    int totalsum = 0;
+    for (int i = 0; i < n; i++)
+    {
+        cin >> arr[i];
+        totalsum += arr[i];
+    }    
+    if (totalsum%n != 0)
+    {
+        cout << -1 << endl;
+        return;
+    }
+
+    vector<pair<int, pair<int, int>>> v1;
+
+    for (int i = 1; i < n; i++)
+    {
+        if (arr[i] == 0)
+            continue;
+        else
+        {
+            if(arr[i]%(i+1) == 0)
+            {
+                v1.push_back(make_pair(i+1,make_pair(1,arr[i]/(i+1))));   
+            }
+            else
+            {
+                int rem = (i+1) - (arr[i]%(i+1));
+                v1.push_back(make_pair(1,make_pair(i+1,rem)));
+                arr[i] += rem;
+                arr[0] -=- rem;
+                v1.push_back(make_pair(i+1,make_pair(1,arr[i]/(i+1))));
+            }
+            arr[0] += arr[i];
+            arr[i] = 0;
+        }
+    }
+
+    int req = (totalsum)/n;
+
+    for (int i = 1; i < n; i++)
+    {
+        v1.push_back(make_pair(1,make_pair(i+1,req)));
+        arr[i] += req;
+        arr[0] -= req;
+    }
+
+    cout << v1.size() << endl;
+    for (int i = 0; i < v1.size(); i++)
+        cout << v1[i].first << " " << v1[i].second.first << " " << v1[i].second.second << endl;
+}
+ 
+signed main() 
+{
+    fast_cin();
+    #ifndef ONLINE_JUDGE
+    freopen("C:/IO/in.txt", "r", stdin);
+    freopen("C:/IO/out.txt", "w", stdout);
+    #endif
+    
+    int t=1;
+    cin>>t;
+    while(t--)
+    {
+        solve();
+    }
+    
+    
+    return 0;    
+}
diff --git a/1417 E.XOR Inverse b/1417 E.XOR Inverse
new file mode 100644
index 0000000..537e606
--- /dev/null
+++ b/1417 E.XOR Inverse	
@@ -0,0 +1,178 @@
+#include<bits/stdc++.h>
+ 
+using namespace std;
+ 
+template <class T> ostream& operator << (ostream &os, const vector<T> &v) { for (T i : v) os << i << ' '; return os; }
+template <class T> ostream& operator << (ostream &os, const set<T> &v) { for (T i : v) os << i << ' '; return os; }
+template <class T, class S> ostream& operator << (ostream &os, const pair<T, S> &v) { os << v.first << ' ' << v.second; return os; }
+template <class T, class S> ostream& operator << (ostream &os, const map<T, S> &v) { for (auto i : v) os << '(' << i.first << "=>" << i.second << ')' << ' '; return os; }
+template <class T, class S> ostream& operator << (ostream &os, const unordered_map<T, S> &v) { for (auto i : v) os << '(' << i.first << "=>" << i.second << ')' << ' '; return os; }
+ 
+#ifndef ONLINE_JUDGE
+#define trace(...) __f(#__VA_ARGS__, __VA_ARGS__)
+    template <class Arg1> void __f(const char* name, Arg1&& arg1) { cerr << name << " : " << arg1 << endl; }
+    template <class Arg1, class... Args>
+    void __f(const char* names, Arg1&& arg1, Args&&... args) {
+        const char* sep = strchr(names + 1, ',');
+        cerr.write(names, sep - names) << " : " << arg1 << "  ";
+        __f(sep + 1, args...);
+    }
+#else
+#define trace(...) 0
+#pragma GCC optimize ("O3")
+#pragma GCC optimize ("unroll-loops")
+#pragma GCC target("avx2,sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
+#define _CRT_SECURE_NO_WARNINGS
+#endif
+ 
+#define fast_cin() ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
+#define MAX 1000000
+#define ll long long
+#define int ll
+#define db double
+#define str string
+#define pb push_back
+#define For(i,s,e) for (ll i=(s); i<(e); i++)
+#define Forrev(i,s,e) for (ll i=(s); i>=(e); i--)
+#define all(v) v.begin(),v.end()
+ 
+#define vll vector<ll>
+#define vs vector<string>
+#define mapll map<ll,ll>
+#define pll pair<ll,ll>
+#define initialise(a, x) memset(a, x, sizeof(a))
+#define maxheap priority_queue<ll>
+#define minheap priority_queue<ll,vector<ll> ,greater<ll>>
+ 
+#define ff first
+#define ss second
+#define endl "\n"
+#define mp make_pair
+const ll mod=1e9 + 7;
+ 
+ll takemod(ll a) {
+    return ((a%mod)+mod)%mod;
+}
+ 
+ll gcd(ll a, ll b) { 
+    if (b == 0) 
+        return a; 
+    return gcd(b, a % b);        
+}
+ 
+ll fast_exp(ll base, ll expo) {
+    ll res=1;
+    while(expo>0) {
+        if(expo&1) res=(res*base)%mod;
+        base=(base*base)%mod;
+        expo>>=1;}
+    return res;
+}
+ 
+ll modinv(ll a) {
+    return takemod(fast_exp(takemod(a), mod-2));
+}
+
+const int N = 1e5+1;
+int arr[3*N];
+int n;
+
+int ansvalues[35][2];
+
+void dpfunc(int bit, vector<int> value)
+{
+    if (bit < 0 or value.size() == 0)
+        return;
+
+    int size1 = value.size();
+
+    vector<int> v1, v2;
+
+    int temp[size1] = {0};
+
+    for (int i = 0; i < size1; i++)
+    {
+        if (((1LL<<bit)&value[i]))
+        {
+            temp[i] = 1;
+            v1.push_back(value[i]);
+        }
+        else
+        {
+            temp[i] = 0;
+            v2.push_back(value[i]);
+        }
+    }
+    int sumx1 = 0, sumx2 = 0;
+
+    int cnt1 = 0, cnt2 = 0;
+
+    for (int i = size1-1; i >= 0; i--)
+    {
+        if (temp[i] == 0)
+            cnt1++;
+        else
+            sumx1 += cnt1;
+
+        if (temp[i] == 1)
+            cnt2++;
+        else
+            sumx2 += cnt2;
+    }
+
+    ansvalues[bit][0] += sumx1;
+    ansvalues[bit][1] += sumx2;
+
+
+    dpfunc(bit-1, v1);
+    dpfunc(bit-1, v2);
+}
+ 
+void solve() 
+{
+    cin >> n;
+
+    vector<int> v1;
+    for (int i = 0; i < n; i++)
+    {
+        cin >> arr[i];
+        v1.push_back(arr[i]);
+    }
+    memset(ansvalues, 0, sizeof(ansvalues));
+    dpfunc(30,v1);
+    
+    int x = 0, ans2 = 0;
+
+    for (int i = 0; i < 30; i++)
+    {
+        if (ansvalues[i][0] <= ansvalues[i][1])
+        {
+            ans2 += ansvalues[i][0];
+        }
+        else
+        {
+            x += (1LL<<i);
+            ans2 += ansvalues[i][1];
+        }
+    }
+    cout << ans2 << " " << x << endl;
+}
+ 
+signed main() 
+{
+    fast_cin();
+    #ifndef ONLINE_JUDGE
+    freopen("C:/IO/in.txt", "r", stdin);
+    freopen("C:/IO/out.txt", "w", stdout);
+    #endif
+    
+    int t=1;
+    // cin>>t;
+    while(t--)
+    {
+        solve();
+    }
+    
+    
+    return 0;    
+}