update

src/2/B3695.cpp

@@ -0,0 +1,23 @@
+#include <bitset>
+#include <cstdint>
+#include <iostream>
+
+using ll = int64_t;
+
+constexpr ll maxn = 3e4;
+ll n,m,q;
+std::bitset<maxn+5> bs[maxn+5];
+std::bitset<maxn+1> none;
+
+int main(){
+    std::cin>>n>>m>>q;
+    for(ll i=1;i<=n;i++){
+        static ll num;
+        std::cin>>num;
+        for(ll j=1;j<=num;j++){
+            static ll tmp;
+            std::cin>>tmp;
+            bs[i][tmp]=true;
+        }
+    }
+}