Added 38A - Army.cpp

Author: vikashpatel24

38A - Army.cpp

@@ -0,0 +1,30 @@
+#include<bits/stdc++.h>
+using namespace std;
+
+// Code Written By: Vikash Patel
+
+int main()
+{
+    int n;
+    cin>>n;
+    int arr[n-1];
+    for(int i=0;i<n-1;i++)
+    {
+        cin>>arr[i];
+    }
+    int a,b;
+    cin>>a>>b;
+    int ans=0;
+    for(int i=a-1;i<b-1;i++)
+    {
+        ans+=arr[i];
+    }
+    cout<<ans<<endl;
+}
+    
+
+
+
+
+
+