8-yuyu0830

yuyu0830/그리디/1202.cpp

@@ -0,0 +1,56 @@
+#include <iostream>
+#include <vector>
+#include <queue>
+#include <algorithm>
+
+using namespace std;
+
+typedef pair<int, int> ii;
+
+#define fastio cin.tie(NULL); cin.sync_with_stdio(false);
+
+ii gems[300001];
+int bags[300001] = {0, };
+
+priority_queue<int> q;
+
+int main() {
+    fastio
+
+    // input
+    int n, k; cin >> n >> k;
+
+    for (int i = 0; i < n; i++) 
+        cin >> gems[i].first >> gems[i].second;
+
+    for (int i = 0; i < k; i++) 
+        cin >> bags[i];
+
+    // Sort gems, bags ascending order
+    // gems sort by weight
+    sort(gems, gems + n);
+    sort(bags, bags + k);
+
+    // ans can be more then int max value
+    // 300,000 * 1,000,000
+    long long int ans = 0;
+    int cnt = 0;
+
+    for (int i = 0; i < k; i++) {
+        int curBag = bags[i];
+
+        // push all the gems that can put in current bag into the priority queue 
+        while (cnt < n && gems[cnt].first <= curBag) {
+            q.push(gems[cnt].second);
+            cnt++;
+        }
+
+        // if queue is not empty, top of queue will be max price that can get in current bag
+        if (!q.empty()) {
+            ans += q.top();
+            q.pop();
+        }
+    }
+
+    printf("%lld\n", ans);
+}