Added 1632A_ABC.cpp

800 Codeforces Solutions/1619A_Square_String?.cpp

@@ -0,0 +1,32 @@
+#include <bits/stdc++.h>
+#define ll long long int
+using namespace std;
+int main() {
+ll t;
+cin>>t;
+while(t--){
+    string s;
+    cin>>s;
+    ll i;
+    if(s.size()%2==1){
+        cout<<"NO"<<endl;
+    }
+    else{
+        string p="";
+        string q="";
+        for(i=0;i<s.size()/2;i++){
+            p+=s[i];
+        }
+        for(i=(s.size()/2);i<s.size();i++){
+            q+=s[i];
+        }
+        if(p==q){
+            cout<<"YES"<<endl;
+        }
+        else{
+            cout<<"NO"<<endl;
+        }
+       // cout<<p<<" "<<q<<endl;
+    }
+}
+}

800 Codeforces Solutions/1632A_ABC.cpp

@@ -0,0 +1,51 @@
+#include<bits/stdc++.h>
+#define ll long long int 
+#define pb push_back
+#define mp make_pair
+using namespace std;
+unsigned countBits(unsigned int number)
+{   
+
+
+    return (int)log2(number)+1;
+}
+int main(){
+     ios_base::sync_with_stdio(false);
+   ll tt;
+   cin>>tt;
+   while(tt--){
+       ll n;
+       cin>>n;
+       n--;
+       ll i;
+       set<ll>s,p;
+       vector<ll>vvv;
+       ll pppp;
+       char cc;
+       char tttt;
+       ll k=countBits(n);
+       s.insert(n);
+       for(i=n;i>0;i--){
+           if(countBits(i)==k){
+               s.insert(i);
+           }
+           else{
+               p.insert(i);
+           }
+       }
+       for(auto it=p.begin();it!=p.end();it++){
+           cout<<*it<<" ";
+       }
+       cout<<0<<" ";
+       for(auto it=s.begin();it!=s.end();it++){
+           cout<<*it<<" ";
+       }
+       string uu;
+       cout<<"\n";
+
+   }
+}
+
+
+
+