B - Hit and Blow

https://atcoder.jp/contests/abc243/submissions/30043462

AtCoder/ABC243/B/B.cpp

@@ -0,0 +1,34 @@
+#include <algorithm>
+#include <iostream>
+
+using std::cin;
+using std::cout;
+const char endl = '\n';
+
+const int N = 1005;
+
+int n, a[N], b[N], ans1, ans2;
+
+int main() {
+    std::ios::sync_with_stdio(false);
+    cin >> n;
+    for (int i = 1; i <= n; i++) {
+        cin >> a[i];
+    }
+    for (int i = 1; i <= n; i++) {
+        cin >> b[i];
+    }
+    for (int i = 1; i <= n; i++) {
+        ans1 += a[i] == b[i];
+    }
+    std::sort(a + 1, a + 1 + n);
+    std::sort(b + 1, b + 1 + n);
+    for (int i = 1; i <= n; i++) {
+        for (int j = 1; j <= n; j++) {
+            if (a[i] == b[j]) ans2++;
+        }
+    }
+    cout << ans1 << endl
+         << ans2 - ans1 << endl;
+    return 0;
+}