diff --git a/Codeforces/Gym/100819M.cpp b/Codeforces/Gym/100819M.cpp
new file mode 100644
index 0000000..40777f5
--- /dev/null
+++ b/Codeforces/Gym/100819M.cpp
@@ -0,0 +1,72 @@
+#include <iostream>
+using namespace std;
+string op;
+int parm;
+int n;
+
+int operation_type[16];
+int operation_parm[16];
+
+bool takeoperation(int a)
+{
+    for(int i=0;i<n;i++)
+    {
+        switch(operation_type[i])
+        {
+        case 0:
+            a+=operation_parm[i];
+            if(a<0) return false;
+            break;
+        case 1:
+            a-=operation_parm[i];
+            if(a<0) return false;
+            break;
+        case 2:
+            a*=operation_parm[i];
+            if(a<0) return false;
+            break;
+        case 3:
+            if(a%operation_parm[i]!=0)
+            {
+                return false;
+            }
+            else
+            {
+                a/=operation_parm[i];
+            }
+            break;
+        }
+    }
+    return true;
+}
+
+int main()
+{
+    cin>>n;
+    for(int i=0;i<n;i++)
+    {
+        cin>>op>>operation_parm[i];
+        operation_type[i]=0;
+        switch(op.at(0))
+        {
+        case 'D':
+            operation_type[i]++;
+        case 'M':
+            operation_type[i]++;
+        case 'S':
+            operation_type[i]++;
+        case 'A':
+            break;
+        }
+    }
+    int cnt=0;
+    for(int i=1;i<=100;i++)
+    {
+        if(takeoperation(i))
+        {
+            cnt++;
+        }
+    }
+    cout<<100-cnt<<endl;
+    return 0;
+}