Revert rng

Author: adamant-pwn

cp-algo/random/rng.hpp

@@ -3,8 +3,11 @@
 #include <chrono>
 #include <random>
 namespace cp_algo::random {
-    std::mt19937_64 rng(
-        std::chrono::steady_clock::now().time_since_epoch().count()
-    );
+    uint64_t rng() {
+        static std::mt19937_64 rng(
+            std::chrono::steady_clock::now().time_since_epoch().count()
+        );
+        return rng();
+    }
 }
 #endif // CP_ALGO_RANDOM_RNG_HPP