From 83061a69780d9daf3a10fa1803e49da03fa5b6ad Mon Sep 17 00:00:00 2001
From: Baoshuo <i@baoshuo.ren>
Date: Sun, 12 Jun 2022 22:48:16 +0800
Subject: [PATCH] B - Promo

https://codeforces.com/contest/1697/submission/160295805
---
 Codeforces/1697/B/B.cpp | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 Codeforces/1697/B/B.cpp

diff --git a/Codeforces/1697/B/B.cpp b/Codeforces/1697/B/B.cpp
new file mode 100644
index 00000000..20b4d6d5
--- /dev/null
+++ b/Codeforces/1697/B/B.cpp
@@ -0,0 +1,38 @@
+#include <iostream>
+#include <algorithm>
+
+using std::cin;
+using std::cout;
+const char endl = '\n';
+
+const int N = 2e5 + 5;
+
+int n, q, p[N];
+long long s[N];
+
+int main() {
+    std::ios::sync_with_stdio(false);
+    cin.tie(nullptr);
+
+    cin >> n >> q;
+
+    for (int i = 1; i <= n; i++) {
+        cin >> p[i];
+    }
+
+    std::sort(p + 1, p + 1 + n, std::greater<int>());
+
+    for (int i = 1; i <= n; i++) {
+        s[i] = s[i - 1] + p[i];
+    }
+
+    while (q--) {
+        int x, y;
+
+        cin >> x >> y;
+
+        cout << s[x] - s[x - y] << endl;
+    }
+
+    return 0;
+}