結果

問題 No.1390 Get together
ユーザー rniyarniya
提出日時 2021-02-12 21:32:34
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 104 ms / 2,000 ms
コード長 5,045 bytes
コンパイル時間 2,047 ms
コンパイル使用メモリ 201,740 KB
最終ジャッジ日時 2025-01-18 18:04:33
ジャッジサーバーID
(参考情報)
judge5 / judge5
このコードへのチャレンジ
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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
6,820 KB
testcase_01 AC 2 ms
6,816 KB
testcase_02 AC 2 ms
6,816 KB
testcase_03 AC 3 ms
6,820 KB
testcase_04 AC 3 ms
6,820 KB
testcase_05 AC 3 ms
6,816 KB
testcase_06 AC 3 ms
6,824 KB
testcase_07 AC 3 ms
6,820 KB
testcase_08 AC 4 ms
6,816 KB
testcase_09 AC 3 ms
6,816 KB
testcase_10 AC 2 ms
6,820 KB
testcase_11 AC 1 ms
6,816 KB
testcase_12 AC 2 ms
6,820 KB
testcase_13 AC 1 ms
6,820 KB
testcase_14 AC 2 ms
6,816 KB
testcase_15 AC 1 ms
6,816 KB
testcase_16 AC 73 ms
9,856 KB
testcase_17 AC 102 ms
15,744 KB
testcase_18 AC 49 ms
6,820 KB
testcase_19 AC 93 ms
12,288 KB
testcase_20 AC 98 ms
14,336 KB
testcase_21 AC 104 ms
14,464 KB
testcase_22 AC 80 ms
10,496 KB
testcase_23 AC 81 ms
10,368 KB
testcase_24 AC 77 ms
10,496 KB
testcase_25 AC 104 ms
12,288 KB
testcase_26 AC 98 ms
12,416 KB
testcase_27 AC 103 ms
12,288 KB
testcase_28 AC 98 ms
12,288 KB
testcase_29 AC 101 ms
12,288 KB
testcase_30 AC 97 ms
12,416 KB
testcase_31 AC 98 ms
12,288 KB
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 #
プレゼンテーションモードにする

#define LOCAL
#include <bits/stdc++.h>
using namespace std;
#pragma region Macros
typedef long long ll;
typedef __int128_t i128;
typedef unsigned int uint;
typedef unsigned long long ull;
#define ALL(x) (x).begin(), (x).end()
template <typename T> istream& operator>>(istream& is, vector<T>& v) {
for (T& x : v) is >> x;
return is;
}
template <typename T> ostream& operator<<(ostream& os, const vector<T>& v) {
for (int i = 0; i < (int)v.size(); i++) {
os << v[i] << (i + 1 == (int)v.size() ? "" : " ");
}
return os;
}
template <typename T, typename U> ostream& operator<<(ostream& os, const pair<T, U>& p) {
os << '(' << p.first << ',' << p.second << ')';
return os;
}
template <typename T, typename U, typename V> ostream& operator<<(ostream& os, const tuple<T, U, V>& t) {
os << '(' << get<0>(t) << ',' << get<1>(t) << ',' << get<2>(t) << ')';
return os;
}
template <typename T, typename U, typename V, typename W> ostream& operator<<(ostream& os, const tuple<T, U, V, W>& t) {
os << '(' << get<0>(t) << ',' << get<1>(t) << ',' << get<2>(t) << ',' << get<3>(t) << ')';
return os;
}
template <typename T, typename U> ostream& operator<<(ostream& os, const map<T, U>& m) {
os << '{';
for (auto itr = m.begin(); itr != m.end();) {
os << '(' << itr->first << ',' << itr->second << ')';
if (++itr != m.end()) os << ',';
}
os << '}';
return os;
}
template <typename T, typename U> ostream& operator<<(ostream& os, const unordered_map<T, U>& m) {
os << '{';
for (auto itr = m.begin(); itr != m.end();) {
os << '(' << itr->first << ',' << itr->second << ')';
if (++itr != m.end()) os << ',';
}
os << '}';
return os;
}
template <typename T> ostream& operator<<(ostream& os, const set<T>& s) {
os << '{';
for (auto itr = s.begin(); itr != s.end();) {
os << *itr;
if (++itr != s.end()) os << ',';
}
os << '}';
return os;
}
template <typename T> ostream& operator<<(ostream& os, const multiset<T>& s) {
os << '{';
for (auto itr = s.begin(); itr != s.end();) {
os << *itr;
if (++itr != s.end()) os << ',';
}
os << '}';
return os;
}
template <typename T> ostream& operator<<(ostream& os, const unordered_set<T>& s) {
os << '{';
for (auto itr = s.begin(); itr != s.end();) {
os << *itr;
if (++itr != s.end()) os << ',';
}
os << '}';
return os;
}
template <typename T> ostream& operator<<(ostream& os, const deque<T>& v) {
for (int i = 0; i < (int)v.size(); i++) {
os << v[i] << (i + 1 == (int)v.size() ? "" : " ");
}
return os;
}
void debug_out() { cerr << '\n'; }
template <class Head, class... Tail> void debug_out(Head&& head, Tail&&... tail) {
cerr << head;
if (sizeof...(Tail) > 0) cerr << ", ";
debug_out(move(tail)...);
}
#ifdef LOCAL
#define debug(...) \
cerr << " "; \
cerr << #__VA_ARGS__ << " :[" << __LINE__ << ":" << __FUNCTION__ << "]" << '\n'; \
cerr << " "; \
debug_out(__VA_ARGS__)
#else
#define debug(...) 42
#endif
template <typename T> T gcd(T x, T y) { return y != 0 ? gcd(y, x % y) : x; }
template <typename T> T lcm(T x, T y) { return x / gcd(x, y) * y; }
template <class T1, class T2> inline bool chmin(T1& a, T2 b) {
if (a > b) {
a = b;
return true;
}
return false;
}
template <class T1, class T2> inline bool chmax(T1& a, T2 b) {
if (a < b) {
a = b;
return true;
}
return false;
}
#pragma endregion
/**
* @brief UnionFind
* @docs docs/datastructure/UnionFind.md
*/
struct UnionFind {
int num;
vector<int> par, rank;
UnionFind(int n) : num(n), par(n), rank(n, 1) { iota(par.begin(), par.end(), 0); }
int root(int x) { return (par[x] == x ? x : par[x] = root(par[x])); }
bool merge(int x, int y) {
x = root(x);
y = root(y);
if (x == y) return false;
if (rank[x] < rank[y]) swap(x, y);
par[y] = x;
rank[x] += rank[y];
num--;
return true;
}
bool same(int x, int y) { return root(x) == root(y); }
int size(int x) { return rank[root(x)]; }
int count() { return num; }
int operator[](int x) { return root(x); }
};
const int INF = 1e9;
const long long IINF = 1e18;
const int dx[4] = {1, 0, -1, 0}, dy[4] = {0, 1, 0, -1};
const char dir[4] = {'D', 'R', 'U', 'L'};
const long long MOD = 1000000007;
// const long long MOD = 998244353;
int main() {
cin.tie(0);
ios::sync_with_stdio(false);
int N, M;
cin >> N >> M;
UnionFind UF(N + M);
for (int i = 0; i < N; i++) {
int b, c;
cin >> b >> c;
UF.merge(b - 1, M + c - 1);
}
set<int> s;
for (int i = 0; i < M; i++) s.emplace(UF[i]);
cout << M - s.size() << '\n';
return 0;
}
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