結果
問題 | No.2290 UnUnion Find |
ユーザー | T101010101 |
提出日時 | 2023-05-05 21:37:59 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 183 ms / 2,000 ms |
コード長 | 12,282 bytes |
コンパイル時間 | 5,054 ms |
コンパイル使用メモリ | 280,020 KB |
実行使用メモリ | 19,112 KB |
最終ジャッジ日時 | 2024-11-23 06:28:00 |
合計ジャッジ時間 | 14,850 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 2 ms
5,248 KB |
testcase_01 | AC | 2 ms
5,248 KB |
testcase_02 | AC | 35 ms
5,248 KB |
testcase_03 | AC | 84 ms
11,104 KB |
testcase_04 | AC | 82 ms
11,104 KB |
testcase_05 | AC | 94 ms
11,104 KB |
testcase_06 | AC | 93 ms
11,232 KB |
testcase_07 | AC | 87 ms
10,980 KB |
testcase_08 | AC | 91 ms
11,108 KB |
testcase_09 | AC | 87 ms
11,100 KB |
testcase_10 | AC | 84 ms
11,104 KB |
testcase_11 | AC | 87 ms
10,976 KB |
testcase_12 | AC | 87 ms
11,100 KB |
testcase_13 | AC | 94 ms
11,104 KB |
testcase_14 | AC | 85 ms
11,104 KB |
testcase_15 | AC | 90 ms
11,108 KB |
testcase_16 | AC | 94 ms
10,976 KB |
testcase_17 | AC | 91 ms
11,184 KB |
testcase_18 | AC | 92 ms
11,100 KB |
testcase_19 | AC | 120 ms
12,056 KB |
testcase_20 | AC | 183 ms
19,112 KB |
testcase_21 | AC | 42 ms
5,248 KB |
testcase_22 | AC | 70 ms
7,232 KB |
testcase_23 | AC | 72 ms
7,232 KB |
testcase_24 | AC | 149 ms
14,404 KB |
testcase_25 | AC | 64 ms
6,016 KB |
testcase_26 | AC | 183 ms
18,020 KB |
testcase_27 | AC | 138 ms
15,064 KB |
testcase_28 | AC | 98 ms
9,392 KB |
testcase_29 | AC | 139 ms
13,908 KB |
testcase_30 | AC | 46 ms
5,248 KB |
testcase_31 | AC | 118 ms
12,576 KB |
testcase_32 | AC | 60 ms
6,136 KB |
testcase_33 | AC | 93 ms
9,088 KB |
testcase_34 | AC | 172 ms
18,984 KB |
testcase_35 | AC | 151 ms
15,960 KB |
testcase_36 | AC | 65 ms
6,884 KB |
testcase_37 | AC | 80 ms
8,620 KB |
testcase_38 | AC | 60 ms
6,492 KB |
testcase_39 | AC | 71 ms
7,416 KB |
testcase_40 | AC | 140 ms
15,332 KB |
testcase_41 | AC | 57 ms
6,016 KB |
testcase_42 | AC | 142 ms
11,860 KB |
testcase_43 | AC | 126 ms
11,296 KB |
testcase_44 | AC | 95 ms
10,972 KB |
testcase_45 | AC | 95 ms
11,100 KB |
testcase_46 | AC | 92 ms
11,104 KB |
ソースコード
#pragma region Macros // #pragma GCC target("avx,avx2,fma") // #pragma GCC optimize("O3,unroll-loops") #include <bits/extc++.h> // #include <atcoder/all> // using namespace atcoder; using namespace std; using namespace __gnu_pbds; // #include <boost/multiprecision/cpp_dec_float.hpp> // #include <boost/multiprecision/cpp_int.hpp> // namespace mp = boost::multiprecision; // using Bint = mp::cpp_int; // using Bdouble = mp::number<mp::cpp_dec_float<128>>; #define TO_STRING(var) # var #define pb emplace_back #define int ll #define endl '\n' #define sqrt __builtin_sqrt using ll = long long; using ld = long double; const ld PI = acos(-1); const ld EPS = 1e-10; const int INF = 1 << 30; const ll INFL = 1LL << 61; // const int MOD = 998244353; const int MOD = 1000000007; __attribute__((constructor)) void constructor() { ios::sync_with_stdio(false); cin.tie(nullptr); // ifstream in("input.txt"); // cin.rdbuf(in.rdbuf()); cout << fixed << setprecision(12); } // class UnionFind { // public: // UnionFind() = default; // UnionFind(int N) : par(N), sz(N, 1) { // iota(par.begin(), par.end(), 0); // } // int root(int x) { // if (par[x] == x) return x; // return (par[x] = root(par[x])); // } // bool unite(int x, int y) { // int rx = root(x); // int ry = root(y); // if (rx == ry) return false; // if (sz[rx] < sz[ry]) swap(rx, ry); // sz[rx] += sz[ry]; // par[ry] = rx; // return true; // } // bool issame(int x, int y) { return (root(x) == root(y)); } // int size(int x) { return sz[root(x)]; } // vector<vector<int>> groups(int N) { // vector<vector<int>> G(N); // for (int x = 0; x < N; x++) { // G[root(x)].push_back(x); // } // G.erase( // remove_if(G.begin(), G.end(), // [&](const vector<int>& V) { return V.empty(); }), // G.end()); // return G; // } // private: // vector<int> par; // vector<int> sz; // }; template<int mod> class Modint{ public: int val = 0; Modint(int x = 0) { while (x < 0) x += mod; val = x % mod; } Modint(const Modint &r) { val = r.val; } Modint operator -() { return Modint(-val); } Modint operator +(const Modint &r) { return Modint(*this) += r; } Modint operator +(const int &q) { Modint r(q); return Modint(*this) += r; } Modint operator -(const Modint &r) { return Modint(*this) -= r; } Modint operator -(const int &q) { Modint r(q); return Modint(*this) -= r; } Modint operator *(const Modint &r) { return Modint(*this) *= r; } Modint operator *(const int &q) { Modint r(q); return Modint(*this) *= r; } Modint operator /(const Modint &r) { return Modint(*this) /= r; } Modint operator /(const int &q) { Modint r(q); return Modint(*this) /= r; } Modint& operator ++() { val = (val + 1) % mod; return *this; } Modint& operator --() { val = (val - 1 + mod) % mod; return *this; } Modint &operator +=(const Modint &r) { val += r.val; if (val >= mod) val -= mod; return *this; } Modint &operator +=(const int &q) { Modint r(q); val += r.val; if (val >= mod) val -= mod; return *this; } Modint &operator -=(const Modint &r) { if (val < r.val) val += mod; val -= r.val; return *this; } Modint &operator -=(const int &q) { Modint r(q); if (val < r.val) val += mod; val -= r.val; return *this; } Modint &operator *=(const Modint &r) { val = val * r.val % mod; return *this; } Modint &operator *=(const int &q) { Modint r(q); val = val * r.val % mod; return *this; } Modint &operator /=(const Modint &r) { int a = r.val, b = mod, u = 1, v = 0; while (b) {int t = a / b; a -= t * b; swap(a, b); u -= t * v; swap(u, v);} val = val * u % mod; if (val < 0) val += mod; return *this; } Modint &operator /=(const int &q) { Modint r(q); int a = r.val, b = mod, u = 1, v = 0; while (b) {int t = a / b; a -= t * b; swap(a, b); u -= t * v; swap(u, v);} val = val * u % mod; if (val < 0) val += mod; return *this; } bool operator ==(const Modint& r) { return this -> val == r.val; } bool operator <(const Modint& r) { return this -> val < r.val; } bool operator !=(const Modint& r) { return this -> val != r.val; } }; using mint = Modint<MOD>; // using mint = modint<MOD>; istream &operator >>(istream &is, mint& x) { int t; is >> t; x = t; return (is); } ostream &operator <<(ostream &os, const mint& x) { return os << x.val; } mint modpow(const mint &x, int n) { if (n == 0) return 1; mint t = modpow(x, n / 2); t = t * t; if (n & 1) t = t * x; return t; } int modpow(__int128_t x, int n, int mod) { __int128_t ret = 1; while (n > 0) { if (n % 2 == 1) ret = ret * x % mod; x = x * x % mod; n /= 2; } return ret; } int POW(int x, int n) { __int128_t ret = 1; if (n < 0) { cout << "error" << endl; return 0; } else if (x == 1 or n == 0) ret = 1; else if (x == -1 && n % 2 == 0) ret = 1; else if (x == -1) ret = -1; else if (n % 2 == 0) ret = POW(x * x, n / 2); else ret = x * POW(x, n - 1); if (ret > 8e18) ret = 0; // llに収まらない範囲は0埋め return ret; } int floor(int x, int y) { return (x > 0 ? x / y : (x - y + 1) / y); } int ceil(int x, int y) { return (x > 0 ? (x + y - 1) / y : x / y); } int per(int x, int y) { if (y == 0) { cout << "error" << endl; return INFL; } if (x >= 0 && y > 0) return x / y; if (x >= 0 && y < 0) return x / y - (x % y < 0); if (x < 0 && y < 0) return x / y + (x % y < 0); // if (x < 0 && y > 0) return x / y - (x % y < 0); } int mod(int x, int y) { if (y == 0) { cout << "error" << endl; return INFL; } if (x >= 0 && y > 0) return x % y; if (x >= 0 && y < 0) return x % y; if (x < 0 && y < 0) { __int128_t ret = x % y; ret += (__int128_t)abs(y) * INFL; ret %= abs(y); return ret; } // if (x < 0 && y > 0) { __int128_t ret = x % y; ret += (__int128_t)abs(y) * INFL; ret %= abs(y); return ret; // } } template <class T> bool chmax(T &a, const T& b) { if (a < b) { a = b; return true; } return false; } template <class T> bool chmin(T &a, const T& b) { if (a > b) { a = b; return true; } return false; } int countl_zero(int N) { return __builtin_clzll(N); } int countl_one(int N) { int ret = 0; while (N % 2) { N /= 2; ret++; } return ret; } int countr_zero(int N) { return __builtin_ctzll(N); } int countr_one(int N) { int ret = 0, k = 63 - __builtin_clzll(N); while (k != -1 && (N & (1LL << k))) { k--; ret++; } return ret; } int popcount(int N) { return __builtin_popcountll(N); } int unpopcount(int N) { return 64 - __builtin_clzll(N) - __builtin_popcountll(N); } int top_bit(int N) { return 63 - __builtin_clzll(N);} // 2^kの位 int bot_bit(int N) { return __builtin_ctz(N);} // 2^kの位 int MSB(int N) { return 1 << (63 - __builtin_clzll(N)); } // mask int LSB(int N) { return (N & -N); } // mask int bit_width(int N) { return 64 - __builtin_clzll(N); } // 桁数 int ceil_log2(int N) { return 63 - __builtin_clzll(N); } int bit_floor(int N) { return 1 << (63 - __builtin_clzll(N)); } int floor_log2(int N) { return 64 - __builtin_clzll(N-1); } int bit_ceil(int N) { return 1 << (64 - __builtin_clzll(N-1)) - (N==1); } vector<mint> fac, finv, Inv; void COMinit(int N) { fac.resize(N + 1); finv.resize(N + 1); Inv.resize(N + 1); fac[0] = fac[1] = 1; finv[0] = finv[1] = 1; Inv[1] = 1; for (int i = 2; i <= N; i++) { fac[i] = fac[i-1] * mint(i); Inv[i] = -Inv[MOD % i] * mint(MOD / i); finv[i] = finv[i - 1] * Inv[i]; } } mint COM(int N, int K) { if (N < K) return 0; if (N < 0 || K < 0) return 0; return fac[N] * finv[K] * finv[N - K]; } struct Edge { int from, to; int cost; Edge(int to, int cost) : from(-1), to(to), cost(cost) {} Edge(int from, int to, int cost) : from(from), to(to), cost(cost) {} Edge &operator=(const int &x) { to = x; return *this; } operator int() const { return to; } }; #pragma endregion class UnionFind { public: UnionFind() = default; UnionFind(int N) : par(N), sz(N, 1), min_node(N), max_node(N) { for (int i = 0; i < N; i++) { par[i] = i; max_node[i] = i; min_node[i] = i; } } UnionFind(int N, const vector<int>& V) : par(N), sz(N, 1), min_node(N), max_node(N), sum(N), min_value(N), max_value(N) { for (int i = 0; i < N; i++) { par[i] = i; max_node[i] = i; min_node[i] = i; sum[i] = V[i]; max_value[i] = V[i]; min_value[i] = V[i]; } } int root(int x) { if (par[x] == x) return x; return (par[x] = root(par[x])); } bool unite(int x, int y) { int rx = root(x); int ry = root(y); if (rx == ry) return false; if (sz[rx] < sz[ry]) swap(rx, ry); sz[rx] += sz[ry]; par[ry] = rx; min_node[rx] = min(min_node[rx], min_node[ry]); max_node[rx] = max(max_node[rx], max_node[ry]); // sum[rx] += sum[ry]; // min_value[rx] = min(min_value[rx], min_value[ry]); // max_value[rx] = max(max_value[rx], max_value[ry]); return true; } bool issame(int x, int y) { return (root(x) == root(y)); } int size(int x) { return sz[root(x)]; } int get_sum(int x) { return sum[root(x)]; } // xが属す集合に含まれる要素の、indexの最大/最小値 int get_max_node(int x) { return max_node[root(x)]; } int get_min_node(int x) { return min_node[root(x)]; } // xが属す集合に含まれる要素の、値の最大/最小値 int get_max_value(int x) { return max_value[root(x)]; } int get_min_value(int x) { return min_value[root(x)]; } vector<vector<int>> groups(int N) { vector<vector<int>> G(N); for (int x = 0; x < N; x++) { G[root(x)].push_back(x); } G.erase( remove_if(G.begin(), G.end(), [&](const vector<int>& v) { return v.empty(); }), G.end()); return G; } private: vector<int> par; vector<int> sz; // sz[v]はvが親の時のみ正しい値を返す vector<int> sum; vector<int> max_node; vector<int> min_node; vector<int> max_value; vector<int> min_value; }; signed main() { int N, Q; cin >> N >> Q; UnionFind uf(N); unordered_set<int> st; for (int i = 0; i < N; i++) { st.insert(i); } unordered_set<int> st2; // 根 for (int i = 0; i < Q; i++) { int t; cin >> t; if (t == 1) { int u, v; cin >> u >> v; u--; v--; if (uf.size(v) == 1) st2.insert(uf.root(u)); else if (!uf.issame(u, v)) { if (uf.size(u) >= uf.size(v)) { st2.erase(uf.root(v)); } else { st2.erase(uf.root(u)); } } uf.unite(u, v); st.erase(u); st.erase(v); } else { int v; cin >> v; v--; if (uf.size(v) == N) cout << -1 << endl; else { bool flag = false; if (st.size()) { for (auto &x : st) { if (v != x) { cout << x + 1 << endl; flag = true; break; } } } if (flag) continue; for (auto &x : st2) { if (!uf.issame(v, x)) { cout << x + 1 << endl; flag = true; break; } } if (flag) continue; cout << -1 << endl; } } } }