結果

問題 No.416 旅行会社
ユーザー hamrayhamray
提出日時 2020-11-21 21:23:38
言語 C++11
(gcc 11.4.0)
結果
WA  
実行時間 -
コード長 5,927 bytes
コンパイル時間 1,862 ms
コンパイル使用メモリ 165,008 KB
実行使用メモリ 43,256 KB
最終ジャッジ日時 2023-09-30 22:18:35
合計ジャッジ時間 8,759 ms
ジャッジサーバーID
(参考情報)
judge14 / judge15
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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 124 ms
30,176 KB
testcase_01 AC 5 ms
10,320 KB
testcase_02 AC 5 ms
10,176 KB
testcase_03 AC 6 ms
10,068 KB
testcase_04 AC 6 ms
10,164 KB
testcase_05 AC 6 ms
10,052 KB
testcase_06 AC 5 ms
10,048 KB
testcase_07 AC 7 ms
10,288 KB
testcase_08 AC 10 ms
10,568 KB
testcase_09 AC 22 ms
12,600 KB
testcase_10 AC 162 ms
30,120 KB
testcase_11 AC 159 ms
30,168 KB
testcase_12 AC 169 ms
32,484 KB
testcase_13 AC 126 ms
30,120 KB
testcase_14 AC 416 ms
42,900 KB
testcase_15 AC 405 ms
42,836 KB
testcase_16 AC 417 ms
43,256 KB
testcase_17 AC 401 ms
42,796 KB
testcase_18 AC 412 ms
42,720 KB
testcase_19 AC 332 ms
37,756 KB
testcase_20 WA -
権限があれば一括ダウンロードができます

ソースコード

diff #

#include <bits/stdc++.h>
//#include <atcoder/all>
//using namespace atcoder;
#pragma GCC target ("avx2")
#pragma GCC optimization ("O3")
#pragma GCC optimization ("unroll-loops")
const double pi = 3.141592653589793238462643383279;
using namespace std;
//typedef
//------------------------------------------
typedef vector<int> VI;
typedef vector<VI> VVI;
typedef vector<string> VS;
typedef pair<int, int> PII;
typedef pair<long long, long long> PLL;
typedef pair<int, PII> TIII;
typedef long long LL;
typedef unsigned long long ULL;
typedef vector<LL> VLL;
typedef vector<VLL> VVLL;

//container util
//------------------------------------------
#define ALL(a) (a).begin(), (a).endf()
#define RALL(a) (a).rbegin(), (a).rend()
#define PB push_back
#define MP make_pair
#define SZ(a) int((a).size())
#define SQ(a) ((a) * (a))
#define EACH(i, c) for (typeof((c).begin()) i = (c).begin(); i != (c).endf(); ++i)
#define EXIST(s, e) ((s).find(e) != (s).endf())
#define SORT(c) sort((c).begin(), (c).endf())

//repetition
//------------------------------------------
#define FOR(i, s, n) for (int i = s; i < (int)n; ++i)
#define REP(i, n) FOR(i, 0, n)
#define MOD 1000000007

#define rep(i, a, b) for (int i = a; i < (b); ++i)
#define trav(a, x) for (auto &a : x)
#define all(x) x.begin(), x.end()

typedef long long ll;
typedef pair<int, int> pii;
typedef vector<int> vi;

#define chmin(x, y) x = min(x, y)
#define chmax(x, y) x = max(x, y)
const double EPS = 1e-9, PI = acos(-1);
//ここから編集    
typedef string::const_iterator State;
template< int mod >
struct ModInt {
  int x;

  ModInt() : x(0) {}

  ModInt(int64_t y) : x(y >= 0 ? y % mod : (mod - (-y) % mod) % mod) {}

  ModInt &operator+=(const ModInt &p) {
    if((x += p.x) >= mod) x -= mod;
    return *this;
  }

  ModInt &operator-=(const ModInt &p) {
    if((x += mod - p.x) >= mod) x -= mod;
    return *this;
  }

  ModInt &operator*=(const ModInt &p) {
    x = (int) (1LL * x * p.x % mod);
    return *this;
  }

  ModInt &operator/=(const ModInt &p) {
    *this *= p.inverse();
    return *this;
  }

  ModInt operator-() const { return ModInt(-x); }

  ModInt operator+(const ModInt &p) const { return ModInt(*this) += p; }

  ModInt operator-(const ModInt &p) const { return ModInt(*this) -= p; }

  ModInt operator*(const ModInt &p) const { return ModInt(*this) *= p; }

  ModInt operator/(const ModInt &p) const { return ModInt(*this) /= p; }

  bool operator==(const ModInt &p) const { return x == p.x; }

  bool operator!=(const ModInt &p) const { return x != p.x; }

  ModInt inverse() const {
    int a = x, b = mod, u = 1, v = 0, t;
    while(b > 0) {
      t = a / b;
      swap(a -= t * b, b);
      swap(u -= t * v, v);
    }
    return ModInt(u);
  }

  ModInt pow(int64_t n) const {
    ModInt ret(1), mul(x);
    while(n > 0) {
      if(n & 1) ret *= mul;
      mul *= mul;
      n >>= 1;
    }
    return ret;
  }

  friend ostream &operator<<(ostream &os, const ModInt &p) {
    return os << p.x;
  }

  friend istream &operator>>(istream &is, ModInt &a) {
    int64_t t;
    is >> t;
    a = ModInt< mod >(t);
    return (is);
  }

  static int get_mod() { return mod; }
};

using modint = ModInt< 998244353 >;
template< typename T >
struct Combination {
  vector< T > _fact, _rfact, _inv;

  Combination(int sz) : _fact(sz + 1), _rfact(sz + 1), _inv(sz + 1) {
    _fact[0] = _rfact[sz] = _inv[0] = 1;
    for(int i = 1; i <= sz; i++) _fact[i] = _fact[i - 1] * i;
    _rfact[sz] /= _fact[sz];
    for(int i = sz - 1; i >= 0; i--) _rfact[i] = _rfact[i + 1] * (i + 1);
    for(int i = 1; i <= sz; i++) _inv[i] = _rfact[i] * _fact[i - 1];
  }

  inline T fact(int k) const { return _fact[k]; }

  inline T rfact(int k) const { return _rfact[k]; }

  inline T inv(int k) const { return _inv[k]; }

  T P(int n, int r) const {
    if(r < 0 || n < r) return 0;
    return fact(n) * rfact(n - r);
  }

  T C(int p, int q) const {
    if(q < 0 || p < q) return 0;
    return fact(p) * rfact(q) * rfact(p - q);
  }

  T H(int n, int r) const {
    if(n < 0 || r < 0) return (0);
    return r == 0 ? 1 : C(n + r - 1, r);
  }
};

struct UnionFind{
  vector<int> par;
  vector<int> siz;
  vector<int> tim;
  set<int> st[101010];
  UnionFind(int sz_): par(sz_), siz(sz_), tim(sz_){
    for(int i=0; i<sz_; ++i) {
      par[i] = i, siz[i] = 1, tim[i] = 0;
      st[i].insert(i);
    }
  }

  void init(int sz_){
    par.resize(sz_);
    siz.resize(sz_);
    for(int i=0; i<sz_; ++i) par[i] = i, siz[i] = 1;
  }

  int root(int x){
    if(x == par[x]) return x;
    return par[x] = root(par[x]);
  }

  bool merge(int x, int y, int t){
    x = root(x), y = root(y);
    if(x == y) return false;
    
    if(root(0) == x){
      for(auto e: st[y]){
        tim[e] = t;
      }
    }else if(root(0) == y){
      for(auto e: st[x]){
        tim[e] = t;
      }
    }
    if(siz[x] < siz[y]) swap(x, y);
    for(auto e: st[y]){
      st[x].insert(e);
    }
    
    siz[x] += siz[y];
    par[y] = x;
    return true;
  }

  bool issame(int x, int y){
    return root(x) == root(y);
  }

  int size(int x){
    return siz[root(x)];
  }
};
vector<vector<int>> g(101010);
int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);
    cout << fixed << setprecision(12);

    int N, M, Q; cin >> N >> M >> Q;
    vector<int> a(M), b(M);
    REP(i,M){
      cin >> a[i] >> b[i];
      a[i]--; b[i]--;
      g[a[i]].push_back(b[i]);
      g[b[i]].push_back(a[i]);
    }
    vector<int> c(Q), d(Q);
    REP(i,Q) {
      cin >> c[i] >> d[i];
      c[i]--; d[i]--;
    }
    reverse(all(c));
    reverse(all(d));
    UnionFind uf(N);
    set<pair<int, int>> st;
    REP(i,M) st.insert(make_pair(c[i], d[i]));
    REP(i,M){
      if(st.find(make_pair(a[i], b[i])) == st.end()){
        uf.merge(a[i], b[i], -1);
      }
    }
    REP(i,Q){
      uf.merge(c[i], d[i], Q-i);
    }

    for(int i=1; i<N; i++){
      cout << uf.tim[i] << '\n';
    }

    return 0; 
}
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