Added 1539B - Love Song.cpp

Author: vikashpatel24

1539B - Love Song.cpp

@@ -0,0 +1,28 @@
+//                                 ॐ नमः शिवाय
+#include<bits/stdc++.h>
+using namespace std;
+#define ll long long
+ 
+// Code Written By: Vikash Patel
+// Codeforces Profile: https://codeforces.com/profile/vikashpatel
+
+int main()
+{
+    int n,q;
+    cin>>n>>q;
+    string s;
+    cin>>s;
+    int sum[n+1];
+    sum[0] = 0;
+    for(int i=1; i<=n; i++)
+    {
+        sum[i] = sum[i-1] + s[i-1]-96;
+    }
+    int l,r;
+    for(int i=0; i<q; i++)
+    {
+        cin>>l>>r;
+        cout<<sum[r]-sum[l-1]<<endl;
+    }
+    return 0;
+}