chore: solved medium day6 task

Medium/Day6/Solution.cpp

@@ -1 +1,57 @@
 // Write your code here
+#include <bits/stdc++.h>
+#include<atcoder/all>
+using namespace std;
+#define int long long int
+
+
+/*---------------------------------------------------------------------------------*/
+
+
+
+int op(int a, int b){return a + b;}
+int e(){return 0;}
+
+void solve ()
+{
+
+    int n,q;
+    cin>>n>>q;
+    vector <int> a(n);
+    for (int i = 0; i < n; i++)
+    {
+        cin>>a[i];
+    }
+    atcoder::segtree<int, op, e> st(a);
+    for (int i = 0; i < q; i++)
+    {
+        int t;
+        cin>>t;
+        if (t==0){
+            int p,x;
+            cin>>p>>x;
+            st.set(p,st.get(p)+x);
+        }
+        else{
+            int l,r;
+            cin>>l>>r;
+            cout<<st.prod(l,r)<<endl;
+
+        }
+
+    }
+
+
+}
+
+
+signed  main() {
+
+
+        solve();
+
+
+
+
+}
+