B - Pasta

https://atcoder.jp/contests/abc241/submissions/29668362

AtCoder/ABC241/B/B.cpp

@@ -0,0 +1,29 @@
+#include <iostream>
+#include <map>
+
+using std::cin;
+using std::cout;
+const char endl = '\n';
+
+int n, m;
+std::map<int, int> a;
+
+int main() {
+    std::ios::sync_with_stdio(false);
+    cin >> n >> m;
+    for (int i = 1; i <= n; i++) {
+        int x;
+        cin >> x;
+        a[x]++;
+    }
+    for (int i = 1; i <= m; i++) {
+        int x;
+        cin >> x;
+        if (!a[x]--) {
+            cout << "No" << endl;
+            return 0;
+        }
+    }
+    cout << "Yes" << endl;
+    return 0;
+}