From 95ce0ec323ca3d36befe07f80479a8c5cce9447e Mon Sep 17 00:00:00 2001
From: Baoshuo <i@baoshuo.ren>
Date: Mon, 19 Sep 2022 21:14:08 +0800
Subject: [PATCH] =?UTF-8?q?T275388=20=E9=80=80=E4=BC=91=E8=AE=A1=E5=88=92?=
 =?UTF-8?q?=20II?=
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https://www.luogu.com.cn/record/86998689
---
 Luogu/T275388/T275388.cpp          | 88 ++++++++++++++++++++++++++++++
 Luogu/T275388/samples/checker.cpp  |  3 +
 Luogu/T275388/samples/ex_king4.in  |  3 +
 Luogu/T275388/samples/ex_king4.out |  3 +
 4 files changed, 97 insertions(+)
 create mode 100644 Luogu/T275388/T275388.cpp
 create mode 100644 Luogu/T275388/samples/checker.cpp
 create mode 100644 Luogu/T275388/samples/ex_king4.in
 create mode 100644 Luogu/T275388/samples/ex_king4.out

diff --git a/Luogu/T275388/T275388.cpp b/Luogu/T275388/T275388.cpp
new file mode 100644
index 00000000..2bc4cf48
--- /dev/null
+++ b/Luogu/T275388/T275388.cpp
@@ -0,0 +1,88 @@
+#include <iostream>
+#include <algorithm>
+#include <numeric>
+#include <vector>
+
+using std::cin;
+using std::cout;
+const char endl = '\n';
+
+const int N = 2e5 + 5;
+
+int n, m;
+bool vis[N];
+std::vector<int> g[N], a, b;
+
+void check() {
+    if (a.size() == n - a.size() - b.size()) {
+        std::fill_n(vis, N, false);
+
+        cout << b.size() << ' ' << a.size() << endl;
+
+        for (const int &x : b) {
+            cout << x << ' ';
+
+            vis[x] = true;
+        }
+
+        cout << endl;
+
+        for (const int &x : a) {
+            cout << x << ' ';
+
+            vis[x] = true;
+        }
+
+        cout << endl;
+
+        for (int i = 1; i <= n; i++) {
+            if (!vis[i]) {
+                cout << i << ' ';
+            }
+        }
+
+        cout << endl;
+
+        exit(0);
+    }
+}
+
+void dfs(int u) {
+    vis[u] = true;
+    b.emplace_back(u);
+    check();
+
+    for (const int &v : g[u]) {
+        if (vis[v]) continue;
+
+        dfs(v);
+        check();
+    }
+
+    b.pop_back();
+    a.emplace_back(u);
+}
+
+int main() {
+    std::ios::sync_with_stdio(false);
+    cin.tie(nullptr);
+
+    cin >> n >> m;
+
+    for (int i = 1; i <= m; i++) {
+        int u, v;
+
+        cin >> u >> v;
+
+        g[u].emplace_back(v);
+        g[v].emplace_back(u);
+    }
+
+    for (int i = 1; i <= n; i++) {
+        if (!vis[i]) dfs(i);
+    }
+
+    cout << -1 << endl;
+
+    return 0;
+}
diff --git a/Luogu/T275388/samples/checker.cpp b/Luogu/T275388/samples/checker.cpp
new file mode 100644
index 00000000..3b756c4e
--- /dev/null
+++ b/Luogu/T275388/samples/checker.cpp
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1c6f04acca8b4a3385306bc0f20b951ff7a77a94220370f0d9de7ae9258af8a1
+size 1771
diff --git a/Luogu/T275388/samples/ex_king4.in b/Luogu/T275388/samples/ex_king4.in
new file mode 100644
index 00000000..362703c8
--- /dev/null
+++ b/Luogu/T275388/samples/ex_king4.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d4ac88e476e834b0d505e01a623e5dd97e79e26f5339f027358d00d7d09f8f01
+size 97431
diff --git a/Luogu/T275388/samples/ex_king4.out b/Luogu/T275388/samples/ex_king4.out
new file mode 100644
index 00000000..0a1cacde
--- /dev/null
+++ b/Luogu/T275388/samples/ex_king4.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6a7fba1dcdb1358b1eb9eeec7114e50d823b3a7cd7d4a79597485197248fe181
+size 48902