diff --git a/exercises/calculator.cpp b/exercises/calculator.cpp
index 013cc78..c46712e 100644
--- a/exercises/calculator.cpp
+++ b/exercises/calculator.cpp
@@ -10,3 +10,44 @@
   Multiplication: 8
   Division: 2
 */
+
+#include <iostream>
+using namespace std;
+
+
+int Sum(int a,int b){
+return a+b;
+}
+
+int Difference(int a,int b){
+    return a-b;
+}
+
+int Multiplication(int a,int b){
+    return a*b;
+}
+
+int Division(int a,int b){
+    return a/b;
+}
+
+
+int main(){
+    cout<<"-------------Welcome to calculator---------------------"<<endl;
+    cout<<"Chose your operation \n Press 1 to Sum \n Press 2 to Difference \n Press 3 to 
+Multiplicate \n Press 4 to Division"<<endl;
+    int x;
+    cin >> x;
+    cout<<"Insert first number"<<endl;
+    int a,b;
+    cin >> a;
+    cout<<"Insert second number"<<endl;
+    cin >> b;
+
+    if(x==1)return Sum(a,b);
+    if(x==2)return Difference(a,b);
+    if(x==3)return Multiplication(a,b);
+    if(x==4)return Division(a,b);
+
+    return 0;
+}
diff --git a/exercises/risk-risiko.cpp b/exercises/risk-risiko.cpp
index 3166f05..14495cc 100644
--- a/exercises/risk-risiko.cpp
+++ b/exercises/risk-risiko.cpp
@@ -27,3 +27,58 @@
   M 3 vs 3 => blue win
   O 2 vs 1 => red win
 */
+
+#include <iostream>
+#include <algorithm>
+#include <cstdlib>
+using namespace std;
+
+
+int attacker_Dices[3];
+int defender_Dices[3];
+  
+void compare(){ 
+    sort(attacker_Dices, attacker_Dices+ 3, greater<int>());
+    sort(defender_Dices, defender_Dices + 3, greater<int>());
+    for(int i=0; i<3; i++){
+        if(defender_Dices[i]>=attacker_Dices[i])
+            {
+                cout<<"N"<<attacker_Dices[i]<<" vs  "<<defender_Dices[i]<< 
+" ==> Blue Win"<<endl;
+            }
+        else  
+            {
+                cout<<"N"<<attacker_Dices[i]<<" vs  "<<defender_Dices[i]<< 
+" ==> Red Win"<<endl;
+            }
+    }
+
+}
+  
+int main(){
+    srand(rand()%556745+1);
+
+
+    cout<<"Red Dices:\n";
+     for(int i=0; i<3; i++){
+        attacker_Dices[i]= rand() % 5+1;
+        cout<<attacker_Dices[i]<<endl;
+   
+    
+ }
+
+ 
+       cout<<"Blue Dices:\n";
+        for(int i=0; i<3; i++){
+        defender_Dices[i]= rand() % 5+1;
+        cout<<defender_Dices[i]<<endl;
+    
+ }
+ 
+ compare();
+
+
+
+
+
+}