Add 32196.cpp

32xxx/32196.cpp

@@ -0,0 +1,33 @@
+#include <algorithm>
+#include <iostream>
+#include <utility>
+#include <vector>
+using namespace std;
+
+int n, m;
+long long k, x, y;
+
+bool cmp(const pair<int, int> &a, const pair<int, int> &b) {
+  return x * a.first - y * a.second < x * b.first - y * b.second;
+}
+
+void solve(void) {
+  cin >> n >> m >> k >> x >> y;
+  vector<pair<int, int>> v(n);
+  for (int i=0; i<n; i++) cin >> v[i].first >> v[i].second;
+  sort(v.begin(), v.end(), cmp);
+
+  long long a = 0, b = 0;
+  for (int i=0; i<m; i++) {
+    a += v[i].first; b += v[i].second;
+  }
+  cout << (k + a) * x + (k - b) * y;
+}
+
+int main(void) {
+  ios::sync_with_stdio(false);
+  cin.tie(nullptr);
+
+  solve();
+  return 0;
+}