結果
問題 | No.1390 Get together |
ユーザー | t98slider |
提出日時 | 2021-02-13 19:39:11 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 73 ms / 2,000 ms |
コード長 | 5,311 bytes |
コンパイル時間 | 1,773 ms |
コンパイル使用メモリ | 178,388 KB |
実行使用メモリ | 18,944 KB |
最終ジャッジ日時 | 2024-07-20 23:23:16 |
合計ジャッジ時間 | 5,486 ms |
ジャッジサーバーID (参考情報) |
judge3 / 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 | 1 ms
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 3 ms
5,376 KB |
testcase_04 | AC | 3 ms
5,376 KB |
testcase_05 | AC | 3 ms
5,376 KB |
testcase_06 | AC | 3 ms
5,376 KB |
testcase_07 | AC | 3 ms
5,376 KB |
testcase_08 | AC | 3 ms
5,376 KB |
testcase_09 | AC | 3 ms
5,376 KB |
testcase_10 | AC | 2 ms
5,376 KB |
testcase_11 | AC | 2 ms
5,376 KB |
testcase_12 | AC | 2 ms
5,376 KB |
testcase_13 | AC | 2 ms
5,376 KB |
testcase_14 | AC | 2 ms
5,376 KB |
testcase_15 | AC | 1 ms
5,376 KB |
testcase_16 | AC | 60 ms
15,360 KB |
testcase_17 | AC | 63 ms
18,944 KB |
testcase_18 | AC | 51 ms
13,312 KB |
testcase_19 | AC | 71 ms
16,800 KB |
testcase_20 | AC | 68 ms
18,048 KB |
testcase_21 | AC | 69 ms
18,048 KB |
testcase_22 | AC | 62 ms
15,744 KB |
testcase_23 | AC | 65 ms
15,636 KB |
testcase_24 | AC | 73 ms
15,864 KB |
testcase_25 | AC | 70 ms
16,660 KB |
testcase_26 | AC | 69 ms
16,640 KB |
testcase_27 | AC | 65 ms
16,640 KB |
testcase_28 | AC | 68 ms
16,640 KB |
testcase_29 | AC | 69 ms
16,732 KB |
testcase_30 | AC | 72 ms
16,640 KB |
testcase_31 | AC | 67 ms
16,768 KB |
ソースコード
#include <bits/stdc++.h> #define all(v) v.begin(), v.end() #define rall(v) v.rbegin(), v.rend() #define rep(i,n) for(int i=0;i<(int)(n);i++) #define drep(i,j,n) for(int i=0;i<(int)(n-1);i++)for(int j=i+1;j<(int)(n);j++) #define trep(i,j,k,n) for(int i=0;i<(int)(n-2);i++)for(int j=i+1;j<(int)(n-1);j++)for(int k=j+1;k<(int)(n);k++) #define codefor int test;scanf("%d",&test);while(test--) #define INT(...) int __VA_ARGS__;in(__VA_ARGS__) #define LL(...) ll __VA_ARGS__;in(__VA_ARGS__) #define yes(ans) if(ans)printf("yes\n");else printf("no\n") #define Yes(ans) if(ans)printf("Yes\n");else printf("No\n") #define YES(ans) if(ans)printf("YES\n");else printf("NO\n") #define vector2d(type,name,h,...) vector<vector<type>>name(h,vector<type>(__VA_ARGS__)) #define vector3d(type,name,h,w,...) vector<vector<vector<type>>>name(h,vector<vector<type>>(w,vector<type>(__VA_ARGS__))) #define umap unordered_map #define uset unordered_set using namespace std; using ll = long long; const int MOD=1000000007; const int MOD2=998244353; const int INF=1<<30; const ll INF2=(ll)1<<60; //入力系 void scan(int& a){scanf("%d",&a);} void scan(long long& a){scanf("%lld",&a);} template<class T,class L>void scan(pair<T, L>& p){scan(p.first);scan(p.second);} template<class T,class U,class V>void scan(tuple<T,U,V>& p){scan(get<0>(p));scan(get<1>(p));scan(get<2>(p));} template<class T> void scan(T& a){cin>>a;} template<class T> void scan(vector<T>& vec){for(auto&& it:vec)scan(it);} void in(){} template <class Head, class... Tail> void in(Head& head, Tail&... tail){scan(head);in(tail...);} //出力系 void print(const int& a){printf("%d",a);} void print(const long long& a){printf("%lld",a);} void print(const double& a){printf("%.15lf",a);} template<class T,class L>void print(const pair<T, L>& p){print(p.first);putchar(' ');print(p.second);} template<class T> void print(const T& a){cout<<a;} template<class T> void print(const vector<T>& vec){if(vec.empty())return;print(vec[0]);for(auto it=vec.begin();++it!= vec.end();){putchar(' ');print(*it);}} void out(){putchar('\n');} template<class T> void out(const T& t){print(t);putchar('\n');} template <class Head, class... Tail> void out(const Head& head,const Tail&... tail){print(head);putchar(' ');out(tail...);} //デバッグ系 template<class T> void dprint(const T& a){cerr<<a;} template<class T> void dprint(const vector<T>& vec){if(vec.empty())return;cerr<<vec[0];for(auto it=vec.begin();++it!= vec.end();){cerr<<" "<<*it;}} void debug(){cerr<<endl;} template<class T> void debug(const T& t){dprint(t);cerr<<endl;} template <class Head, class... Tail> void debug(const Head& head, const Tail&... tail){dprint(head);cerr<<" ";debug(tail...);} ll intpow(ll a, ll b){ ll ans = 1; while(b){ if(b & 1) ans *= a; a *= a; b /= 2; } return ans; } ll modpow(ll a, ll b, ll p){ ll ans = 1; while(b){ if(b & 1) (ans *= a) %= p; (a *= a) %= p; b /= 2; } return ans; } ll modinv(ll a, ll m) {ll b = m, u = 1, v = 0;while (b) {ll t = a / b;a -= t * b; swap(a, b);u -= t * v; swap(u, v);}u %= m;if (u < 0) u += m;return u;} ll updivide(ll a,ll b){if(a%b==0) return a/b;else return (a/b)+1;} template<class T> void chmax(T &a,const T b){if(b>a)a=b;} template<class T> void chmin(T &a,const T b){if(b<a)a=b;} 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; }; int main(){ INT(n,m); dsu uf(m); vector<int> table(n,-1); vector<pair<int,int>> vec(n); rep(i,n){ in(vec[i]); if(table[vec[i].second-1]==-1)table[vec[i].second-1]=vec[i].first-1; else uf.merge(table[vec[i].second-1],vec[i].first-1); } auto g=uf.groups(); int ans=0; rep(i,g.size()){ ans+=g[i].size()-1; } out(ans); }