new file: P17722.cpp

P17722.cpp

@@ -0,0 +1,30 @@
+#include <bits/stdc++.h>
+#define int long long
+using namespace std;
+int n, m;
+int a[1000005];
+int c[1000005];
+signed main() {
+    scanf("%lld%lld", &n, &m);
+    for (int i = 1; i <= n; ++i) {
+        scanf("%lld", &a[i]);
+    }
+    sort(a + 1, a + n + 1);
+    for (int i = 1, l; i <= m; ++i) {
+        scanf("%lld", &l);
+        int sum = 0;
+        for (int j = 1, x; j <= l; ++j) {
+            scanf("%lld", &x);
+            int pos = lower_bound(a + 1, a + n + 1, x) - a - 1;
+            sum += n - pos;
+        }
+        c[i] = sum;
+    }
+    sort(c + 1, c + m + 1);
+    int ans = m * n * (n + 1) / 2;
+    for (int k = 1; k <= m; ++k) {
+        ans += c[k] * (m - k + 1);
+    }
+    printf("%lld\n", ans);
+    return 0;
+}