結果
問題 | No.1390 Get together |
ユーザー | yuto1115 |
提出日時 | 2021-02-12 21:44:42 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
RE
|
実行時間 | - |
コード長 | 3,933 bytes |
コンパイル時間 | 2,257 ms |
コンパイル使用メモリ | 204,544 KB |
実行使用メモリ | 6,948 KB |
最終ジャッジ日時 | 2024-07-19 20:52:45 |
合計ジャッジ時間 | 5,544 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
(要ログイン)
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 | WA | - |
testcase_05 | RE | - |
testcase_06 | WA | - |
testcase_07 | RE | - |
testcase_08 | WA | - |
testcase_09 | WA | - |
testcase_10 | RE | - |
testcase_11 | AC | 2 ms
6,944 KB |
testcase_12 | RE | - |
testcase_13 | AC | 2 ms
6,940 KB |
testcase_14 | AC | 3 ms
6,944 KB |
testcase_15 | AC | 2 ms
6,940 KB |
testcase_16 | AC | 53 ms
6,944 KB |
testcase_17 | AC | 48 ms
6,944 KB |
testcase_18 | AC | 57 ms
6,940 KB |
testcase_19 | AC | 65 ms
6,944 KB |
testcase_20 | AC | 60 ms
6,944 KB |
testcase_21 | AC | 62 ms
6,944 KB |
testcase_22 | AC | 57 ms
6,944 KB |
testcase_23 | AC | 60 ms
6,944 KB |
testcase_24 | AC | 67 ms
6,944 KB |
testcase_25 | AC | 60 ms
6,944 KB |
testcase_26 | AC | 61 ms
6,940 KB |
testcase_27 | AC | 62 ms
6,944 KB |
testcase_28 | AC | 66 ms
6,940 KB |
testcase_29 | AC | 56 ms
6,944 KB |
testcase_30 | AC | 57 ms
6,940 KB |
testcase_31 | AC | 62 ms
6,944 KB |
ソースコード
//@formatter:off #include<bits/stdc++.h> #define overload4(_1,_2,_3,_4,name,...) name #define rep1(i,n) for (ll i = 0; i < ll(n); ++i) #define rep2(i,s,n) for (ll i = ll(s); i < ll(n); ++i) #define rep3(i,s,n,d) for(ll i = ll(s); i < ll(n); i+=d) #define rep(...) overload4(__VA_ARGS__,rep3,rep2,rep1)(__VA_ARGS__) #define rrep(i,n) for (ll i = ll(n)-1; i >= 0; i--) #define all(a) a.begin(),a.end() #define rall(a) a.rbegin(),a.rend() #define popcount(x) __builtin_popcount(x) #define pb push_back #define eb emplace_back #ifdef __LOCAL #define debug(...) { cout << #__VA_ARGS__; cout << ": "; print(__VA_ARGS__); cout << flush; } #else #define debug(...) void(0) #endif #define INT(...) int __VA_ARGS__;scan(__VA_ARGS__) #define LL(...) ll __VA_ARGS__;scan(__VA_ARGS__) #define STR(...) string __VA_ARGS__;scan(__VA_ARGS__) #define CHR(...) char __VA_ARGS__;scan(__VA_ARGS__) #define DBL(...) double __VA_ARGS__;scan(__VA_ARGS__) #define LD(...) ld __VA_ARGS__;scan(__VA_ARGS__) using namespace std; using ll = long long; using ld = long double; using P = pair<int,int>; using LP = pair<ll,ll>; using vi = vector<int>; using vvi = vector<vector<int>>; using vl = vector<ll>; using vvl = vector<vector<ll>>; using vd = vector<double>; using vvd = vector<vector<double>>; using vs = vector<string>; using vc = vector<char>; using vvc = vector<vector<char>>; using vb = vector<bool>; using vvb = vector<vector<bool>>; using vp = vector<P>; using vvp = vector<vector<P>>; template<class S,class T> istream& operator>>(istream &is,pair<S,T> &p) { return is >> p.first >> p.second; } template<class S,class T> ostream& operator<<(ostream &os,const pair<S,T> &p) { return os<<'{'<<p.first<<","<<p.second<<'}'; } template<class T> istream& operator>>(istream &is,vector<T> &v) { for(T &t:v){is>>t;} return is; } template<class T> ostream& operator<<(ostream &os,const vector<T> &v) { os<<'[';rep(i,v.size())os<<v[i]<<(i==int(v.size()-1)?"":","); return os<<']'; } template<class T> void vecout(const vector<T> &v,char div='\n') { rep(i,v.size()) cout<<v[i]<<(i==int(v.size()-1)?'\n':div);} template<class T> bool chmin(T& a,T b) {if(a > b){a = b; return true;} return false;} template<class T> bool chmax(T& a,T b) {if(a < b){a = b; return true;} return false;} void scan(){} template <class Head, class... Tail> void scan(Head& head, Tail&... tail){ cin >> head; scan(tail...); } template<class T> void print(const T& t){ cout << t << '\n'; } template <class Head, class... Tail> void print(const Head& head, const Tail&... tail){ cout<<head<<' '; print(tail...); } template<class... T> void fin(const T&... a) { print(a...); exit(0); } const string yes[] = {"no","yes"}; const string Yes[] = {"No","Yes"}; const string YES[] = {"NO","YES"}; const int inf = 1001001001; const ll linf = 1001001001001001001; //@formatter:on class unionfind { int n; vector<int> par, rank; public: unionfind(int n) : n(n), par(n, -1), rank(n, 0) {} int root(int x) { if (par[x] < 0) return x; else return par[x] = root(par[x]); } bool same(int x, int y) { return root(x) == root(y); }; 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); if (rank[x] == rank[y]) rank[x]++; par[x] += par[y]; par[y] = x; return true; } int size(int x) { return -par[root(x)]; }; bool connected() { rep(i, n - 1) if (!same(i, i + 1)) return false; return true; } }; int main() { ios::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr); INT(n, m); vi v(n, -1); unionfind uf(n); rep(i, n) { INT(b, c); b--, c--; if (v[c] != -1) { uf.merge(v[c], b); } v[c] = b; } int ans = 0; rep(i, n) if (uf.root(i) == i) ans += uf.size(i) - 1; print(ans); }