提出 5a9228f8-4375-462d-9961-6e10e828eace

コード

#include <atcoder/dsu>
using namespace std;

int main()
{
	int n, m;
	cin >> n >> m;
	vector<int> a(m), b(m);
	for (int i = 0; i < m; i++)
	{
		cin >> a[i] >> b[i];
		a[i]--, b[i]--;
	}
	int q;
	cin >> q;
	vector<int> v(q), s(q), t(q);
	map<pair<int, int>, int> dpa;
	for (int i = 0; i < q; i++)
	{
		cin >> v[i] >> s[i];
		s[i]--;
		if (v[i] != 3 && v[i] != 4)
		{
			cin >> t[i];
			t[i]--;
		}
		if (v[i] == 5)
		{
			dpa[make_pair(s[i], t[i])] = dpa.size();
		}
	}
	atcoder::dsu uf(n);
	assert(dpa.size() <= 3);
	vector<bool> state(dpa.size(), false);
	set<pair<int, int>> gs;
	for (int i = 0; i < m; i++)
	{
		gs.insert(make_pair(a[i], b[i]));
	}
	for (int i = 0; i < q; i++)
	{
		if (v[i] == 1)
		{
			gs.erase(make_pair(s[i], t[i]));
		}
		else if (v[i] == 5)
		{
			gs.insert(make_pair(s[i], t[i]));
		}
	}
	reverse(v.begin(), v.end());
	reverse(s.begin(), s.end());
	reverse(t.begin(), t.end());
	for (auto [u, v] : gs)
	{
		if (dpa.contains(make_pair(u, v)))
		{
			state[dpa[make_pair(u, v)]] = true;
		}
		else
		{
			uf.merge(u, v);
		}
	}
	vector<string> ans;
	for (int i = 0; i < q; i++)
	{
		if (v[i] == 1)
		{
			if (dpa.contains(make_pair(s[i], t[i])))
			{
				state[dpa[make_pair(s[i], t[i])]] = true;
			}
			else
			{
				uf.merge(s[i], t[i]);
			}
		}
		else if (v[i] == 2)
		{
			if (uf.same(s[i], t[i]))
			{
				ans.push_back("Yes");
				continue;
			}
			set<int> lds;
			lds.insert(uf.leader(s[i]));
			vector<int> cs;
			bool ok = false;
			for (int j = 0; j < 3; j++)
				for (auto [k, q] : dpa)
				{
					if (!state[q])
						continue;
					auto [u, v] = k;
					for (int h : lds)
						if (uf.same(u, h) || uf.same(v, h))
						{
							if (uf.same(u, t[i]) || uf.same(v, t[i]))
							{
								ok = true;
								break;
							}
						}
				}
			if (ok)
			{
				ans.push_back("Yes");
			}
			else
			{
				ans.push_back("No");
			}
		}
		else if (v[i] == 3)
		{
			auto vec = uf.groups();
			set<int> lds;
			lds.insert(uf.leader(s[i]));
			for (int j = 0; j < 3; j++)
				for (auto [k, q] : dpa)
				{
					if (!state[q])
						continue;
					auto [u, v] = k;
					for (int h : lds)
						if (uf.same(u, h) || uf.same(v, h))
						{
							lds.insert(uf.leader(u));
							lds.insert(uf.leader(v));
						}
				}
			vector<int> vcs;
			for (int j = 0; j < n; j++)
			{
				for (int v : lds)
				{
					if (uf.same(v, j))
					{
						vcs.push_back(j);
						break;
					}
				}
			}
			string str = "";
			for (int v : vcs)
			{
				str += to_string(v + 1);
				str += " ";
			}
			str.pop_back();
			ans.push_back(str);
		}
		else if (v[i] == 4)
		{
			set<int> lds;
			lds.insert(uf.leader(s[i]));
			for (int j = 0; j < 3; j++)
				for (auto [k, q] : dpa)
				{
					if (!state[q])
						continue;
					auto [u, v] = k;
					for (int h : lds)
						if (uf.same(u, h) || uf.same(v, h))
						{
							lds.insert(uf.leader(u));
							lds.insert(uf.leader(v));
						}
				}
			int sum = 0;
			for (int v : lds)
			{
				sum += uf.size(v);
			}
			ans.push_back(to_string(sum));
		}
		else
		{
			state[dpa[make_pair(s[i], t[i])]] = false;
		}
	}
	for (int i = ans.size() - 1; i >= 0; i--)
	{
		cout << ans[i] << endl;
	}
}

結果

問題	点数	言語	結果	実行時間	メモリ
G - Breaking Friends	0	C++	WJ	0 ms	0 KiB

コンパイルエラー

Main.cpp: In function 'int main()':
Main.cpp:7:9: error: 'cin' was not declared in this scope
    7 |         cin >> n >> m;
      |         ^~~
Main.cpp:2:1: note: 'std::cin' is defined in header '<iostream>'; did you forget to '#include <iostream>'?
    1 | #include <atcoder/dsu>
  +++ |+#include <iostream>
    2 | using namespace std;
Main.cpp:17:9: error: 'map' was not declared in this scope
   17 |         map<pair<int, int>, int> dpa;
      |         ^~~
Main.cpp:2:1: note: 'std::map' is defined in header '<map>'; did you forget to '#include <map>'?
    1 | #include <atcoder/dsu>
  +++ |+#include <map>
    2 | using namespace std;
Main.cpp:17:27: error: expected primary-expression before ',' token
   17 |         map<pair<int, int>, int> dpa;
      |                           ^
Main.cpp:17:29: error: expected primary-expression before 'int'
   17 |         map<pair<int, int>, int> dpa;
      |                             ^~~
Main.cpp:29:25: error: 'dpa' was not declared in this scope
   29 |                         dpa[make_pair(s[i], t[i])] = dpa.size();
      |                         ^~~
In file included from /usr/include/c++/13/cassert:44,
                 from /include/cpp/atcoder/dsu.hpp:5,
                 from /include/cpp/atcoder/dsu:1,
                 from Main.cpp:1:
Main.cpp:33:16: error: 'dpa' was not declared in this scope
   33 |         assert(dpa.size() <= 3);
      |                ^~~
Main.cpp:35:9: error: 'set' was not declared in this scope
   35 |         set<pair<int, int>> gs;
      |         ^~~
Main.cpp:2:1: note: 'std::set' is defined in header '<set>'; did you forget to '#include <set>'?
    1 | #include <atcoder/dsu>
  +++ |+#include <set>
    2 | using namespace std;
Main.cpp:35:26: error: expected primary-expression before '>' token
   35 |         set<pair<int, int>> gs;
      |                          ^~
Main.cpp:35:29: error: 'gs' was not declared in this scope; did you mean 's'?
   35 |         set<pair<int, int>> gs;
      |                             ^~
      |                             s
Main.cpp:65:16: error: 'string' was not declared in this scope
   65 |         vector<string> ans;
      |                ^~~~~~
Main.cpp:2:1: note: 'std::string' is defined in header '<string>'; did you forget to '#include <string>'?
    1 | #include <atcoder/dsu>
  +++ |+#include <string>
    2 | using namespace std;
Main.cpp:65:22: error: template argument 1 is invalid
   65 |         vector<string> ans;
      |                      ^
Main.cpp:65:22: error: template argument 2 is invalid
Main.cpp:83:37: error: request for member 'push_back' in 'ans', which is of non-class type 'int'
   83 |                                 ans.push_back("Yes");
      |                                     ^~~~~~~~~
Main.cpp:86:29: error: expected primary-expression before 'int'
   86 |                         set<int> lds;
      |                             ^~~
Main.cpp:87:25: error: 'lds' was not declared in this scope
   87 |                         lds.insert(uf.leader(s[i]));
      |                         ^~~
Main.cpp:108:37: error: request for member 'push_back' in 'ans', which is of non-class type 'int'
  108 |                                 ans.push_back("Yes");
      |                                     ^~~~~~~~~
Main.cpp:112:37: error: request for member 'push_back' in 'ans', which is of non-class type 'int'
  112 |                                 ans.push_back("No");
      |                                     ^~~~~~~~~
Main.cpp:118:29: error: expected primary-expression before 'int'
  118 |                         set<int> lds;
      |                             ^~~
Main.cpp:119:25: error: 'lds' was not declared in this scope
  119 |                         lds.insert(uf.leader(s[i]));
      |                         ^~~
Main.cpp:145:31: error: expected ';' before 'str'
  145 |                         string str = "";
      |                               ^~~~
      |                               ;
Main.cpp:148:33: error: 'str' was not declared in this scope; did you mean 'std'?
  148 |                                 str += to_string(v + 1);
      |                                 ^~~
      |                                 std
Main.cpp:148:40: error: 'to_string' was not declared in this scope
  148 |                                 str += to_string(v + 1);
      |                                        ^~~~~~~~~
Main.cpp:148:40: note: 'std::to_string' is defined in header '<string>'; did you forget to '#include <string>'?
Main.cpp:151:25: error: 'str' was not declared in this scope; did you mean 'std'?
  151 |                         str.pop_back();
      |                         ^~~
      |                         std
Main.cpp:152:29: error: request for member 'push_back' in 'ans', which is of non-class type 'int'
  152 |                         ans.push_back(str);
      |                             ^~~~~~~~~
Main.cpp:156:29: error: expected primary-expression before 'int'
  156 |                         set<int> lds;
      |                             ^~~
Main.cpp:157:25: error: 'lds' was not declared in this scope
  157 |                         lds.insert(uf.leader(s[i]));
      |                         ^~~
Main.cpp:176:29: error: request for member 'push_back' in 'ans', which is of non-class type 'int'
  176 |                         ans.push_back(to_string(sum));
      |                             ^~~~~~~~~
Main.cpp:176:39: error: 'to_string' was not declared in this scope
  176 |                         ans.push_back(to_string(sum));
      |                                       ^~~~~~~~~
Main.cpp:176:39: note: 'std::to_string' is defined in header '<string>'; did you forget to '#include <string>'?
Main.cpp:183:26: error: request for member 'size' in 'ans', which is of non-class type 'int'
  183 |         for (int i = ans.size() - 1; i >= 0; i--)
      |                          ^~~~
Main.cpp:185:17: error: 'cout' was not declared in this scope
  185 |                 cout << ans[i] << endl;
      |                 ^~~~
Main.cpp:185:17: note: 'std::cout' is defined in header '<iostream>'; did you forget to '#include <iostream>'?
Main.cpp:185:28: error: invalid types 'int[int]' for array subscript
  185 |                 cout << ans[i] << endl;
      |                            ^
Main.cpp:185:35: error: 'endl' was not declared in this scope
  185 |                 cout << ans[i] << endl;
      |                                   ^~~~
Main.cpp:2:1: note: 'std::endl' is defined in header '<ostream>'; did you forget to '#include <ostream>'?
    1 | #include <atcoder/dsu>
  +++ |+#include <ostream>
    2 | using namespace std;