Added Research presentation

Codeforces/codeforces.cpp/.vs/ProjectSettings.json

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+{
+  "CurrentProjectSetting": "No Configurations"
+}

Codeforces/codeforces.cpp/.vs/VSWorkspaceState.json

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+{
+  "ExpandedNodes": [
+    ""
+  ],
+  "PreviewInSolutionExplorer": false
+}

Codeforces/codeforces.cpp/1.cpp

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+
+#inciude<iostream>
+using namespace std;
+int main() {
+	int rating;
+	cin >> rating
+		if (rating <= 1399) {
+			cout << 'Division 4'
+		}
+	    elseif(1400 <= rating <= 1599) {
+		cout << 'Division 3'
+	    }
+	    elseif(1600 <= rating <= 1899) {
+		cout << 'Division 4'
+	    }
+		else(1900 <= rating) {
+			cout << 'Division 1'
+		}
+	return 0;
+}
+

Codeforces/codeforces.cpp/2code.cpp/.vs/ProjectSettings.json

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+{
+  "CurrentProjectSetting": "No Configurations"
+}

Codeforces/codeforces.cpp/2code.cpp/.vs/VSWorkspaceState.json

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+{
+  "ExpandedNodes": [
+    ""
+  ],
+  "SelectedNode": "\\Source1.cpp",
+  "PreviewInSolutionExplorer": false
+}

Codeforces/codeforces.cpp/2code.cpp/Source1.cpp

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+#inciude<iostream>
+using namespace std;
+int main() {
+	int rating;
+	cin >> rating
+		if (rating <= 1399) {
+			cout << 'Division 4'
+		}
+	elseif(1400 <= rating <= 1599) {
+		cout << 'Division 3'
+	}
+	elseif(1600 <= rating <= 1899) {
+		cout << 'Division 4'
+	}
+		else(1900 <= rating) {
+			cout << 'Division 1'
+		}
+	return 0;
+}

Codeforces/codeforces.cpp/68.c

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+

Codeforces/codeforces.cpp/A. Array Coloring.c

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+#include<stdio.h>
+using namespace std;
+int main(){
+    int t;
+    cin>>t;
+    while(t--){
+        int n;
+        cin>>n;
+        int arr[n];
+        int sum=0;
+        for(i:arr){
+            cin>>arr[i];
+        }
+        for(int i=0; i<n; i++){
+            sum+=arr[i];
+        }
+        if(sum%2==0) return Yes;
+        else{return No;}
+    }
+}

Codeforces/codeforces.cpp/A. Cipher Shifer.cpp

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+#include<stdio.h>
+using namespace std;
+int main(){
+    int t;
+    cin>>t;
+    while(t--){
+        int n;
+        cin>>n;
+        int arr[n];
+        int sum=0;
+        for(i:arr){
+            cin>>arr[i];
+        }
+        for(int i=0; i<n; i++){
+            sum+=arr[i];
+        }
+        if(sum%2==0) return Yes;
+        else{return No;}
+    }
+}

Codeforces/codeforces.cpp/A. Cipher Shifer1.cpp

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+#include <iostream>
+#include <string>
+
+using namespace std;
+
+string decryptString(string s) {
+    string result = "";
+
+    for (int i = 0; i < s.length(); i += 2) {
+        result += s[i];
+    }
+
+    return result;
+}
+int main(){
+    int t;
+    cin>>t;
+    while(t--){
+        int n;
+        cin>>n;
+        string s;
+    cout << "Enter the encrypted string: ";
+    cin >> s;
+
+    string decryptedString = decryptString(s);
+    cout << "Decrypted string: " << decryptedString << endl;
+
+    return 0;
+    }
+}

Codeforces/codeforces.cpp/A. Divisible Array.cpp

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+#include<bits/stdc++.h>
+using namespace std;
+int main(){
+    int t;
+    cin>>t;
+    while(t--){
+        int n;
+        cin>>n;
+        cout<<endl;
+        int arr[n];
+        if(n%2==0){
+            for(int i=0;i<n;i++){
+            arr[i]=((i+1)*2);
+
+            }
+            for(int j=0;j<n;j++){
+            cout<<arr[j]<<" ";
+            }
+        }
+        else if(n%2!=0){
+               for(int i=0;i<n;i++){
+            arr[i]=((i+1));
+
+               }
+               for(int j=0;j<n;j++){
+            cout<<arr[j]<<" ";
+               }
+        }
+
+
+    }
+}

Codeforces/codeforces.cpp/A. Game with Board.cpp

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+#include<bits/stdc++.h>
+using namespace std;
+int main(){
+    int t;
+    cin>>t;
+    while(t--){
+        int n;
+        cin>>n;
+        if(n==2 || n==99) cout<<"Bob"<<endl;
+        cout<<"Bob";
+        else{cout<<"Alice"<<endl;}
+    }
+}

Codeforces/codeforces.cpp/A. Grasshopper on a Line.cpp

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+#include<bits/stdc++.h>
+using namespace std;
+int main(){
+    int t;
+    cin>>t;
+    while(t--){
+        int x,k;
+        cin>>x>>k;
+        if(x<k || x%k!=0){
+            cout<<1<<endl<<x<<endl;
+        }
+        else{
+            cout<<2<<endl<<(x-1)<<" "<<1<<endl;
+        }
+
+    }
+    return 0;
+}

Codeforces/codeforces.cpp/A. MEXanized Array.cpp

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+#include<iostream>
+#include<vector>
+#define ll long long
+using namespace std;
+
+int main() {
+    int t;
+    cin >> t;
+    while (t--) {
+        long long n, k, x;
+        cin >> n >> k >> x;
+        ll sum = 0;
+
+        if (k > n || k - 1 > x) {
+            cout << -1 << endl; // Print -1 when conditions are not met
+        }
+        else {
+            for (int i = 1; i < k; i++) {
+                sum+=i;
+            }
+            if(k>=x){
+                for (int j = 0; j < n - k; j++) {
+                sum+= (k-1);
+                }
+            }
+            else{
+                for (int l = 0; l < n-k; l++) {
+                sum += x;
+            }
+            }
+            cout << sum  << endl; // Corrected to add 'n' to the sum
+        }
+    }
+    return 0;
+}

Codeforces/codeforces.cpp/A. Musical Puzzle.cpp

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+#include<bits/stdc++.h>
+using namespace std;
+int main(){
+    int t;
+    cin>>t;
+    while(t--){
+        int n, i, j;
+        cin>>n;
+        string s;
+        cin>>s;
+        int count=0;
+
+    }
+    return 0;
+}

Codeforces/codeforces.cpp/A. Twin Permutations.cpp

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+#include<bits/stdc++.h>
+using namespace std;
+int main(){
+    int t;
+    cin>>t;
+    while(t--){
+        int n, a[n], b[n];
+        cin>>n;
+        for(int i=0; i<n; i++){
+            cin>>a[i];
+        }
+        for(int j=0; j<n; j++){
+            if(a[j]<a[j+1]){
+                cout<<a[j]<<" ";
+            }
+            else{
+                sort(a, a + n);
+            }
+        }
+        cout<<a[n]<<" ";
+        cout<<endl;
+    }
+    return 0;
+}

Codeforces/codeforces.cpp/B. Comparison String.cpp

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+#include<bits/stdc++.h>
+using namespace std;
+int main(){
+    int t;
+    cin>>t;
+    while(t--){
+        int n;
+        cin>>n;
+        string s;
+        cin>>s;
+        int a[n+1];
+        a[0]=1;
+        for(int i=0;i<n;i++){
+            if(s[i]=='<'){
+                a[i+1]=a[i]+1;
+            }
+            else{
+                a[i+1]=a[i]-1;
+            }
+
+        }
+        sort(a,a+n+1);
+        int ans=1;
+        for(int j=0; j<n; j++){
+            if(a[j]!=a[j+1]){
+                ans++;
+            }
+        }
+        cout<<ans<<endl;
+
+
+    }
+    return 0;
+}

Codeforces/codeforces.cpp/B. Comparison String1.cpp

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+#include<bits/stdc++.h>
+using namespace std;
+int main(){
+    int t;
+    cin>>t;
+    while(t--){
+        int n;
+        cin>>n;
+        string s;
+        cin>>s;
+        int ind, wid;
+        for(int i=0;i<n;i++){
+            if(s[i]=='>' || s[i]=='<'){
+                cout<<n+1;
+            }
+            else if((s[i]=='<' && s[i+1]=='>') || (s[i]=='>' && s[i+1]=='<')){
+                cout<<2;
+            }
+        }
+        for(int j=0;j<n;j++){
+            if(s[i]=='<' && s[i+1]=='>'){
+                    ind=i;
+            }
+            else if(s[i]=='>' && s[i+1]=='<'){
+                    wid=i;
+            }
+        }
+        for(int k=i;k<n;k++){
+
+        }
+
+
+    }
+    return 0;
+}