結果
問題 | No.1390 Get together |
ユーザー | peroon |
提出日時 | 2021-02-12 22:03:13 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
RE
|
実行時間 | - |
コード長 | 8,029 bytes |
コンパイル時間 | 2,747 ms |
コンパイル使用メモリ | 194,768 KB |
実行使用メモリ | 28,628 KB |
最終ジャッジ日時 | 2024-07-19 21:36:36 |
合計ジャッジ時間 | 7,902 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
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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
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | RE | - |
testcase_04 | RE | - |
testcase_05 | RE | - |
testcase_06 | RE | - |
testcase_07 | RE | - |
testcase_08 | RE | - |
testcase_09 | RE | - |
testcase_10 | RE | - |
testcase_11 | RE | - |
testcase_12 | RE | - |
testcase_13 | RE | - |
testcase_14 | AC | 2 ms
5,376 KB |
testcase_15 | AC | 2 ms
5,376 KB |
testcase_16 | AC | 68 ms
22,368 KB |
testcase_17 | AC | 136 ms
28,628 KB |
testcase_18 | AC | 56 ms
20,372 KB |
testcase_19 | AC | 142 ms
26,360 KB |
testcase_20 | AC | 139 ms
27,712 KB |
testcase_21 | AC | 142 ms
27,624 KB |
testcase_22 | AC | 104 ms
24,532 KB |
testcase_23 | AC | 107 ms
24,436 KB |
testcase_24 | AC | 104 ms
24,476 KB |
testcase_25 | AC | 141 ms
26,288 KB |
testcase_26 | AC | 140 ms
26,452 KB |
testcase_27 | AC | 142 ms
26,216 KB |
testcase_28 | AC | 141 ms
26,240 KB |
testcase_29 | AC | 133 ms
26,368 KB |
testcase_30 | AC | 137 ms
26,368 KB |
testcase_31 | AC | 138 ms
26,240 KB |
ソースコード
#ifdef LOCAL #define _GLIBCXX_DEBUG #define __clock__ #else #pragma GCC optimize("Ofast") #endif #include<bits/stdc++.h> using namespace std; using ll = long long; using ld = long double; using VI = vector<ll>; using VV = vector<VI>; using VS = vector<string>; using PII = pair<ll, ll>; // tourist set template <typename A, typename B> string to_string(pair<A, B> p); template <typename A, typename B, typename C> string to_string(tuple<A, B, C> p); template <typename A, typename B, typename C, typename D> string to_string(tuple<A, B, C, D> p); string to_string(const string& s) { return '"' + s + '"'; } string to_string(const char* s) { return to_string((string) s); } string to_string(bool b) { return (b ? "true" : "false"); } string to_string(char c){ string s = {c}; return s; } string to_string(vector<bool> v) { bool first = true; string res = "{"; for (int i = 0; i < static_cast<int>(v.size()); i++) { if (!first) { res += ", "; } first = false; res += to_string(v[i]); } res += "}"; return res; } template <size_t N> string to_string(bitset<N> v) { string res = ""; for (size_t i = 0; i < N; i++) { res += static_cast<char>('0' + v[i]); } return res; } template <typename A> string to_string(A v) { bool first = true; string res = "{"; for (const auto &x : v) { if (!first) { res += ", "; } first = false; res += to_string(x); } res += "}"; return res; } template <typename A, typename B> string to_string(pair<A, B> p) { return "(" + to_string(p.first) + ", " + to_string(p.second) + ")"; } template <typename A, typename B, typename C> string to_string(tuple<A, B, C> p) { return "(" + to_string(get<0>(p)) + ", " + to_string(get<1>(p)) + ", " + to_string(get<2>(p)) + ")"; } template <typename A, typename B, typename C, typename D> string to_string(tuple<A, B, C, D> p) { return "(" + to_string(get<0>(p)) + ", " + to_string(get<1>(p)) + ", " + to_string(get<2>(p)) + ", " + to_string(get<3>(p)) + ")"; } void debug_out() { cerr << '\n'; } template <typename Head, typename... Tail> void debug_out(Head H, Tail... T) { cerr << " " << to_string(H); debug_out(T...); } #ifdef LOCAL #define debug(...) cerr << "[" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__) #else #define debug(...) 42 #endif // tourist set end template<class T>bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; } template<class T>bool chmin(T &a, const T &b) { if (b<a) { a=b; return 1; } return 0; } #define FOR(i,a,b) for(ll i=(a);i<(b);++i) #define rep(i,b) FOR(i, 0, b) #define ALL(v) (v).begin(), (v).end() #define p(s) cout<<(s)<<'\n' #define p2(s, t) cout << (s) << " " << (t) << '\n' #define br() p("") #define pn(s) cout << (#s) << " " << (s) << '\n' #define SZ(x) ((int)(x).size()) #define SORT(A) sort(ALL(A)) #define RSORT(A) sort(ALL(A), greater<ll>()) #define MP make_pair #define p_yes() p("Yes") #define p_no() p("No") #define possible() p("Possible") #define impossible() p("Impossible") void yes(){p_yes(); exit(0);} void no(){p_no(); exit(0);} ll SUM(VI& V){ return accumulate(ALL(V), 0LL); } ll MIN(VI& V){return *min_element(ALL(V));} ll MAX(VI& V){return *max_element(ALL(V));} void print_vector(VI& V, ll offset=0){ ll n = V.size(); rep(i, n){ if(i) cout << ' '; cout << V[i]+offset; } cout << endl; } ll gcd(ll a,ll b){ if(b == 0) return a; return gcd(b,a%b); } ll lcm(ll a,ll b){ ll g = gcd(a,b); return a / g * b; } // long double using ld = long double; #define EPS (1e-14) #define equals(a,b) (fabs((a)-(b)) < EPS) // 小さい順に取り出すpriority queue using inverse_priority_queue = priority_queue<ll, vector<ll>, greater<ll> >; int popcount(ll t){ return __builtin_popcountll(t); } const ll mod = 1e9 + 7; // const ll mod = 998244353; const ll inf = 1e18; const double PI = acos(-1); // [a/b] (繰り上げ) ll ceil_div(ll a, ll b){ return (a+b-1)/b; } ll string_to_ll(string s){ return atoll(s.c_str()); } // snuke's mint // auto mod int // https://youtu.be/L8grWxBlIZ4?t=9858 // https://youtu.be/ERZuLAxZffQ?t=4807 : optimize // https://youtu.be/8uowVvQ_-Mo?t=1329 : division // const int mod = 1000000007; struct mint { ll x; // typedef long long ll; mint(ll x=0):x((x%mod+mod)%mod){} mint operator-() const { return mint(-x);} mint& operator+=(const mint a) { if ((x += a.x) >= mod) x -= mod; return *this; } mint& operator-=(const mint a) { if ((x += mod-a.x) >= mod) x -= mod; return *this; } mint& operator*=(const mint a) { (x *= a.x) %= mod; return *this; } mint operator+(const mint a) const { mint res(*this); return res+=a; } mint operator-(const mint a) const { mint res(*this); return res-=a; } mint operator*(const mint a) const { mint res(*this); return res*=a; } mint pow(ll t) const { if (!t) return 1; mint a = pow(t>>1); a *= a; if (t&1) a *= *this; return a; } // for prime mod mint inv() const { return pow(mod-2); } mint& operator/=(const mint a) { return (*this) *= a.inv(); } mint operator/(const mint a) const { mint res(*this); return res/=a; } }; #include <algorithm> #include <cassert> #include <vector> namespace atcoder { // Implement (union by size) + (path compression) // Reference: // Zvi Galil and Giuseppe F. Italiano, // Data structures and algorithms for disjoint set union problems struct dsu { public: dsu() : _n(0) {} dsu(int n) : _n(n), parent_or_size(n, -1) {} int merge(int a, int b) { assert(0 <= a && a < _n); assert(0 <= b && b < _n); int x = leader(a), y = leader(b); if (x == y) return x; if (-parent_or_size[x] < -parent_or_size[y]) std::swap(x, y); parent_or_size[x] += parent_or_size[y]; parent_or_size[y] = x; return x; } bool same(int a, int b) { assert(0 <= a && a < _n); assert(0 <= b && b < _n); return leader(a) == leader(b); } int leader(int a) { assert(0 <= a && a < _n); if (parent_or_size[a] < 0) return a; return parent_or_size[a] = leader(parent_or_size[a]); } int size(int a) { assert(0 <= a && a < _n); return -parent_or_size[leader(a)]; } std::vector<std::vector<int>> groups() { std::vector<int> leader_buf(_n), group_size(_n); for (int i = 0; i < _n; i++) { leader_buf[i] = leader(i); group_size[leader_buf[i]]++; } std::vector<std::vector<int>> result(_n); for (int i = 0; i < _n; i++) { result[i].reserve(group_size[i]); } for (int i = 0; i < _n; i++) { result[leader_buf[i]].push_back(i); } result.erase( std::remove_if(result.begin(), result.end(), [&](const std::vector<int>& v) { return v.empty(); }), result.end()); return result; } private: int _n; // root node: -1 * component size // otherwise: parent std::vector<int> parent_or_size; }; } // namespace atcoder using namespace atcoder; // 忘れがち // for codeforces void solve(){ ll N; cin>>N; VI A(N); rep(i, N){ cin >> A[i]; } } int main(){ cin.tie(0); ios::sync_with_stdio(false); // input ll N,M; cin>>N>>M; // N : slime num, color num // M : box num VV box(N); // colorごとに管理 VI B(N); VI C(N); rep(i, N){ ll b,c;cin>>b>>c; b--;c--; B[i]=b; C[i]=c; debug(b,c); box[c].push_back(b); } rep(i,N){ debug(i,box[i]); } dsu uf(N); rep(c,N){ VI A = box[c]; // A : box indexes ll sz = SZ(A); rep(j,sz-1){ uf.merge(A[j], A[j+1]); } } auto gr = uf.groups(); debug(gr); ll ans=0; for(auto A : gr){ ans += A.size()-1; } p(ans); return 0; }