結果

問題 No.3034 コーエン-マコーレー抽象単体複体
ユーザー 👑 potato167
提出日時 2025-02-21 22:53:37
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 1,795 ms / 2,000 ms
コード長 5,260 bytes
コンパイル時間 3,063 ms
コンパイル使用メモリ 221,012 KB
実行使用メモリ 63,616 KB
最終ジャッジ日時 2025-02-21 22:54:02
合計ジャッジ時間 22,244 ms
ジャッジサーバーID
(参考情報)
judge5 / judge4
このコードへのチャレンジ
(要ログイン)
ファイルパターン 結果
sample AC * 4
other AC * 36
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

#include <bits/stdc++.h>
using namespace std;
using ll=long long;
using ld=long double;
const ll ILL=2167167167167167167;
const int INF=2100000000;
#define rep(i,a,b) for (int i=(int)(a);i<(int)(b);i++)
#define all(p) p.begin(),p.end()
template<class T> using _pq = priority_queue<T, vector<T>, greater<T>>;
template<class T> int LB(vector<T> &v,T a){return lower_bound(v.begin(),v.end(),a)-v.begin();}
template<class T> int UB(vector<T> &v,T a){return upper_bound(v.begin(),v.end(),a)-v.begin();}
template<class T> bool chmin(T &a,T b){if(b<a){a=b;return 1;}else return 0;}
template<class T> bool chmax(T &a,T b){if(a<b){a=b;return 1;}else return 0;}
template<class T> void So(vector<T> &v) {sort(v.begin(),v.end());}
template<class T> void Sore(vector<T> &v) {sort(v.begin(),v.end(),[](T x,T y){return x>y;});}
bool yneos(bool a,bool upp=false){if(a){cout<<(upp?"YES\n":"Yes\n");}else{cout<<(upp?"NO\n":"No\n");}return a;}
template<class T> void vec_out(vector<T> &p,int ty=0){
if(ty==2){cout<<'{';for(int i=0;i<(int)p.size();i++){if(i){cout<<",";}cout<<'"'<<p[i]<<'"';}cout<<"}\n";}
else{if(ty==1){cout<<p.size()<<"\n";}for(int i=0;i<(int)(p.size());i++){if(i) cout<<" ";cout<<p[i];}cout<<"\n";}}
template<class T> T vec_min(vector<T> &a){assert(!a.empty());T ans=a[0];for(auto &x:a) chmin(ans,x);return ans;}
template<class T> T vec_max(vector<T> &a){assert(!a.empty());T ans=a[0];for(auto &x:a) chmax(ans,x);return ans;}
template<class T> T vec_sum(vector<T> &a){T ans=T(0);for(auto &x:a) ans+=x;return ans;}
int pop_count(long long a){int res=0;while(a){res+=(a&1),a>>=1;}return res;}
template<class T> T square(T a){return a * a;}
namespace po167{
struct UF
{
using _F = int;
int _n;
std::vector<_F> wei;
std::vector<int> q;
int component;
UF(int n):_n(n), wei(n), component(n), par(n){
for (int i = 0; i < n; i++){
wei[i] =1, par[i] = i;
}
}
void intialize(){
for (auto x : q){
wei[root(x)] = 1;
par[x] = x;
}
component = (int)par.size();
q = {};
}
//
int root(int a){
assert(0 <= a && a < _n);
if (a == par[a]) return a;
return par[a] = root(par[a]);
}
//true1,false0
int same(int a, int b){
assert(0 <= a && a < _n);
assert(0 <= b && b < _n);
if(root(a) == root(b)) return 1;
else return 0;
}
_F size(int a){
return wei[root(a)];
}
//a,b,true
bool unite(int a,int b){
a = root(a), b = root(b);
if (a == b) return false;
if (wei[a] < wei[b]) std::swap(a, b);
par[b] = a;
q.push_back(b);
wei[a] += wei[b];
component--;
return true;
}
private:
std::vector<int> par;
};
}
using po167::UF;
void solve();
// CITRUS CURIO CITY / FREDERIC
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
int t = 1;
// cin >> t;
rep(i, 0, t) solve();
}
void solve(){
int N, M;
cin >> N >> M;
UF em(N);
vector<UF> T(N + 1, em);
vector<set<int>> s(N + 1);
const int L = 3000;
vector<bitset<L>> men(L);
int P = 0;
set<pair<int ,int>> sen;
int R = 0;
map<pair<int, int>, int> m;
auto get = [&](int a, int b) -> int {
if (!m.count({a, b})){
m[{a, b}] = m.size();
}
return m[{a, b}];
};
auto add = [&](int x, int y) -> void {
if (sen.count({x, y})) return;
sen.insert({x, y});
if (!T[N].unite(x, y)) R++;
};
rep(i, 0, M){
int a, b, c;
cin >> a >> b >> c;
a--, b--, c--;
bitset<L> tmp;
tmp[get(a, b)] = 1, tmp[get(a, c)] = 1, tmp[get(b, c)] = 1;
rep(j, 0, (int)m.size()){
if (tmp[j]){
if (men[j][j]) tmp ^= men[j];
else{
men[j] = tmp;
P++;
break;
}
}
}
add(a, b);
add(b, c);
add(a, c);
rep(j, 0, N + 1){
if (j != a){
s[j].insert(a);
}
if (j != b){
s[j].insert(b);
}
if (j != c){
s[j].insert(c);
}
if (j != a && j != b){
T[j].unite(a, b);
}
if (j != b && j != c){
T[j].unite(b, c);
}
if (j != c && j != a){
T[j].unite(a, c);
}
}
if (T[N].component - 1 + (int)s[N].size() != N){
cout << "CO\n";
}
else if (R != P){
// cout << P << " " << R << "\n";
cout << "H1\n";
}
else{
bool ok = true;
rep(j, 0, N){
if (T[j].component - 1 + (int)s[j].size() != N) ok = false;
}
cout << (ok ? "CM\n" : "LK\n");
}
}
}
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