diff --git a/Graph/tarjan_scc.cpp b/Graph/tarjan_scc.cpp
index a812aba..7f89859 100644
--- a/Graph/tarjan_scc.cpp
+++ b/Graph/tarjan_scc.cpp
@@ -1,25 +1,24 @@
-int cnt, scc_num, scc[MN], in[MN], low[MN];
-stack<int> s;
-bitset<MN> ins;
-
-void tarjan(int u) {
-	low[u] = in[u] = cnt++;
-	s.push(u);
-	ins[u] = 1;
-	for (int v : G[u]) {
-		if (in[v] == -1) tarjan(v), low[u] = min(low[u], low[v]);
-		else if (ins[v]) low[u] = min(low[u], in[v]);
-	}
-	if (low[u] == in[u]) {
-		while (1) {
-			int x = s.top(); s.pop();
-			scc[x] = scc_num, ins[x] = 0;
-			if (x == u) break;
-		}
-		++scc_num;
-	}
+struct tarjan {
+    int cnt, scc_num, scc[MN], in[MN], low[MN];
+    stack<int> s;
+    bitset<MN> ins;
+    void tarjan(vector<int> * G, int u) {
+        low[u] = in[u] = cnt++, ins[u] = 1; s.push(u);        
+        for (int v : G[u]) {
+            if (in[v] == -1) tarjan(G, v), low[u] = min(low[u], low[v]);
+            else if (ins[v]) low[u] = min(low[u], in[v]);
+        }
+        if (low[u] == in[u]) {
+            while (1) {
+                int x = s.top(); s.pop();
+                scc[x] = scc_num, ins[x] = 0;
+                if (x == u) break;
+            }
+            ++scc_num;
+        }
+    }
+    void find_scc(vector<int> * G) {
+        memset(scc, -1, sizeof scc), memset(in, -1, sizeof in);
+        for (int u = 1; u <= N; ++u) if (scc[u] == -1) tarjan(G, u);
+    }
 }
-
-
-memset(scc, -1, sizeof scc), memset(in, -1, sizeof in);
-for (int u = 1; u <= N; ++u) if (scc[u] == -1) tarjan(u);