diff --git a/zadanie.cm b/zadanie.cm
new file mode 100644
index 0000000..8eff72e
--- /dev/null
+++ b/zadanie.cm
@@ -0,0 +1,45 @@
+const int N=50;
+int buffer[N];
+int write=0;
+int read=0;
+binarysem sem;
+
+void add1(){
+    int i;
+    for(i=1;i<=50;i++){
+        wait(sem);
+            buffer[write]=i;
+            write=(write+1)%N;
+        signal(sem);
+    }
+}
+
+void add2(){
+    int i=0;
+    for(i=51;i<=100;i++){
+        wait(sem);
+            buffer[write]=i;
+            write=(write+1)%N;
+        signal(sem);
+    }
+}
+
+void get(){
+    int item;
+    int i;
+    for(i=0;i<100;i++){
+        wait(sem);
+            item=buffer[read];
+            read=(read+1)%N;
+            cout<<item<<'\n';
+        signal(sem);
+    }
+}
+
+int main(){
+    initialsem(sem,1);
+    cobegin{
+        add1();add2();get();   
+    }
+}
+