mirror of
https://git.sb/baoshuo/OI-codes.git
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parent
95ce0ec323
commit
66970b14d9
88
S2OJ/1564/1564.cpp
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88
S2OJ/1564/1564.cpp
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#include <iostream>
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#include <algorithm>
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#include <numeric>
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#include <vector>
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using std::cin;
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using std::cout;
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const char endl = '\n';
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const int N = 2e5 + 5;
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int n, m;
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bool vis[N];
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std::vector<int> g[N], a, b;
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void check() {
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if (a.size() == n - a.size() - b.size()) {
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std::fill_n(vis, N, false);
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cout << b.size() << ' ' << a.size() << endl;
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for (const int &x : b) {
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cout << x << ' ';
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vis[x] = true;
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}
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cout << endl;
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for (const int &x : a) {
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cout << x << ' ';
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vis[x] = true;
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}
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cout << endl;
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for (int i = 1; i <= n; i++) {
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if (!vis[i]) {
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cout << i << ' ';
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}
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}
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cout << endl;
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exit(0);
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}
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}
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void dfs(int u) {
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vis[u] = true;
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b.emplace_back(u);
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check();
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for (const int &v : g[u]) {
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if (vis[v]) continue;
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dfs(v);
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check();
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}
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b.pop_back();
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a.emplace_back(u);
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}
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int main() {
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std::ios::sync_with_stdio(false);
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cin.tie(nullptr);
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cin >> n >> m;
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for (int i = 1; i <= m; i++) {
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int u, v;
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cin >> u >> v;
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g[u].emplace_back(v);
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g[v].emplace_back(u);
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}
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for (int i = 1; i <= n; i++) {
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if (!vis[i]) dfs(i);
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}
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cout << -1 << endl;
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return 0;
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}
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