結果
問題 | No.2890 Chiffon |
ユーザー | ponjuice |
提出日時 | 2024-09-13 21:59:05 |
言語 | C++23 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 1,622 ms / 2,000 ms |
コード長 | 6,551 bytes |
コンパイル時間 | 5,644 ms |
コンパイル使用メモリ | 318,468 KB |
実行使用メモリ | 32,404 KB |
最終ジャッジ日時 | 2024-09-26 14:40:39 |
合計ジャッジ時間 | 35,234 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
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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
5,248 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 2 ms
5,376 KB |
testcase_04 | AC | 1 ms
5,376 KB |
testcase_05 | AC | 2 ms
5,376 KB |
testcase_06 | AC | 2 ms
5,376 KB |
testcase_07 | AC | 2 ms
5,376 KB |
testcase_08 | AC | 184 ms
6,912 KB |
testcase_09 | AC | 2 ms
5,376 KB |
testcase_10 | AC | 1 ms
5,376 KB |
testcase_11 | AC | 2 ms
5,376 KB |
testcase_12 | AC | 1 ms
5,376 KB |
testcase_13 | AC | 2 ms
5,376 KB |
testcase_14 | AC | 1 ms
5,376 KB |
testcase_15 | AC | 1 ms
5,376 KB |
testcase_16 | AC | 2 ms
5,376 KB |
testcase_17 | AC | 1 ms
5,376 KB |
testcase_18 | AC | 2 ms
5,376 KB |
testcase_19 | AC | 2 ms
5,376 KB |
testcase_20 | AC | 2 ms
5,376 KB |
testcase_21 | AC | 2 ms
5,376 KB |
testcase_22 | AC | 1 ms
5,376 KB |
testcase_23 | AC | 1,488 ms
32,404 KB |
testcase_24 | AC | 122 ms
5,376 KB |
testcase_25 | AC | 96 ms
5,376 KB |
testcase_26 | AC | 190 ms
6,400 KB |
testcase_27 | AC | 220 ms
6,680 KB |
testcase_28 | AC | 8 ms
5,376 KB |
testcase_29 | AC | 22 ms
5,376 KB |
testcase_30 | AC | 105 ms
5,376 KB |
testcase_31 | AC | 256 ms
7,040 KB |
testcase_32 | AC | 218 ms
6,656 KB |
testcase_33 | AC | 16 ms
5,376 KB |
testcase_34 | AC | 1,173 ms
17,172 KB |
testcase_35 | AC | 987 ms
17,168 KB |
testcase_36 | AC | 991 ms
17,164 KB |
testcase_37 | AC | 1,016 ms
17,168 KB |
testcase_38 | AC | 982 ms
17,172 KB |
testcase_39 | AC | 1,149 ms
17,168 KB |
testcase_40 | AC | 1,335 ms
17,168 KB |
testcase_41 | AC | 991 ms
17,168 KB |
testcase_42 | AC | 1,622 ms
17,296 KB |
testcase_43 | AC | 1,244 ms
17,168 KB |
testcase_44 | AC | 1,049 ms
17,296 KB |
testcase_45 | AC | 1,060 ms
17,164 KB |
testcase_46 | AC | 1,041 ms
17,172 KB |
testcase_47 | AC | 1,054 ms
17,172 KB |
testcase_48 | AC | 1,043 ms
17,172 KB |
testcase_49 | AC | 1,481 ms
17,172 KB |
testcase_50 | AC | 1,495 ms
17,292 KB |
testcase_51 | AC | 1,511 ms
17,312 KB |
testcase_52 | AC | 1,497 ms
17,168 KB |
testcase_53 | AC | 1,475 ms
17,300 KB |
testcase_54 | AC | 267 ms
7,048 KB |
testcase_55 | AC | 1,002 ms
13,736 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; #include <atcoder/all> using namespace atcoder; //高速化 struct ponjuice{ponjuice(){cin.tie(0);ios::sync_with_stdio(0);cout<<fixed<<setprecision(20);}}PonJuice; //#define endl '\n' //インタラクティブ問題の時は消す //型 using ll = long long; using ld = long double; using mint = modint998244353;//1000000007; template<class T>using vc = vector<T>; template<class T>using vvc = vc<vc<T>>; template<class T>using vvvc = vvc<vc<T>>; using vi = vc<int>; using vvi = vvc<int>; using vvvi = vvvc<int>; using vl = vc<ll>; using vvl = vvc<ll>; using vvvl = vvvc<ll>; using pi = pair<int, int>; using pl = pair<ll, ll>; using ull = unsigned ll; template<class T>using priq = priority_queue<T>; template<class T>using priqg = priority_queue<T, vc<T>, greater<T>>; // for文 #define overload4(a, b, c, d, e, ...) e #define rep1(n) for(ll i = 0; i < n; i++) #define rep2(i, n) for(ll i = 0; i < n; i++) #define rep3(i, a, b) for(ll i = a; i < b; i++) #define rep4(i, a, b, step) for(ll i = a; i < b; i+= step) #define rep(...) overload4(__VA_ARGS__, rep4, rep3, rep2, rep1)(__VA_ARGS__) #define per1(n) for(ll i = n-1; i >= 0; i--) #define per2(i, n) for(ll i = n-1; i >= 0; i--) #define per3(i, a, b) for(ll i = b-1; i >= a; i--) #define per4(i, a, b, step) for(ll i = b-1; i >= a; i-= step) #define per(...) overload4(__VA_ARGS__, per4, per3, per2, per1)(__VA_ARGS__) #define fore1(a) for(auto&& i : a) #define fore2(i,a) for(auto&& i : a) #define fore3(x,y,a) for(auto&& [x, y] : a) #define fore4(x,y,z,a) for(auto&& [x, y, z] : a) #define fore(...) overload4(__VA_ARGS__, fore4, fore3, fore2, fore1)(__VA_ARGS__) //関数 #define all(x) (x).begin(), (x).end() #define rall(x) (x).rbegin(), (x).rend() #define si(x) (ll)(x).size() template<class S, class T>inline bool chmax(S& a, T b){return a < b && ( a = b , true);} template<class S, class T>inline bool chmin(S& a, T b){return a > b && ( a = b , true);} template<class T>void uniq(vc<T>&a){sort(all(a));a.erase(unique(all(a)),a.end());} template<class T>vc<T> operator++(vc<T>&v,signed){auto res = v;fore(e,v)e++;return res;} template<class T>vc<T> operator--(vc<T>&v,signed){auto res = v;fore(e,v)e--;return res;} template<class T>vc<T> operator++(vc<T>&v){fore(e,v)e++;return v;} template<class T>vc<T> operator--(vc<T>&v){fore(e,v)e--;return v;} //入出力(operator) template<int T>istream&operator>>(istream&is,static_modint<T>&a){ll v;is>>v;a=v;return is;} istream&operator>>(istream&is,modint&a){ll v;cin>>v;a=v;return is;} template<class S,class T>istream&operator>>(istream&is,pair<S,T>&a){is>>a.a>>a.b;return is;} template<class T>istream&operator>>(istream&is,vc<T>&a){fore(e,a)is>>e;return is;} template<int T>ostream&operator<<(ostream&os,static_modint<T>a){return os<<a.val();} ostream&operator<<(ostream&os,modint a){return os<<a.val();} template<class S,class T>ostream&operator<<(ostream&os,pair<S,T>&a){return os<<a.a<<" "<<a.b;} template<class T>ostream&operator<<(ostream&os,set<T>&a){fore(it,a){os<<it<<" ";}return os;} template<class T>ostream&operator<<(ostream&os,multiset<T>&a){fore(it,a){os<<it<<" ";}return os;} template<class S,class T>ostream&operator<<(ostream&os,map<S,T>&a){fore(x,y,a){os<<x<<" "<<y<<"\n";}return os;} template<class T>ostream&operator<<(ostream&os,unordered_set<T>&a){fore(it,a){os<<it<<" ";}return os;} template<class S,class T>ostream&operator<<(ostream&os,unordered_map<S,T>&a){fore(x,y,a){os<<x<<" "<<y<<"\n";}return os;} template<class T>ostream&operator<<(ostream&os,vc<T>&a){fore(e,a)os<<e<<" ";return os;} template<class T>ostream&operator<<(ostream&os,vvc<T>&a){fore(e,a)os<<e<<"\n";return os;} //入出力(関数) vi readvi(ll n){vi a(n);cin>>a;return a;} vl readvl(ll n){vl a(n);cin>>a;return a;} vvi readg(ll n,ll m,bool bidirected=true){vvi g(n);rep(i,m){ll a,b;cin>>a>>b;a--;b--;g[a].emplace_back(b);if(bidirected)g[b].emplace_back(a);}return g;} vvc<pi>readgc(ll n,ll m,bool bidirected=true){vvc<pi> g(n);rep(i,m){ll a,b,c;cin>>a>>b>>c;a--;b--;g[a].emplace_back(b,c);if(bidirected)g[b].emplace_back(a,c);}return g;} vvi readt(ll n,bool bidirected=true){return readg(n,n-1,bidirected);} vvc<pi> readtc(ll n,bool bidirected=true){return readgc(n,n-1,bidirected);} inline void yes(){cout << "Yes\n";} inline void no(){cout << "No\n";} inline void yesno(bool y = true){if(y)yes();else no();} inline void print(){cout<<endl;} template<class T>inline void print(T a){cout<<a<<endl;} template<class T,class... Ts>inline void print(T a,Ts ...b){cout<<a;(cout<<...<<(cout<<' ',b));cout<<endl;} //定数 constexpr ll mod = 998244353; constexpr ll minf=-(1<<29); constexpr ll inf=(1<<29); constexpr ll MINF=-(1LL<<60); constexpr ll INF=(1LL<<60); constexpr ld EPS = 1e-8; const ld PI = acosl(-1); #define equals(a, b) (abs((a) - (b)) < EPS) const int dx[4] ={-1, 0, 1, 0}; const int dy[4] ={ 0, 1, 0,-1}; const int dx8[8] ={-1,-1,-1, 0, 1, 1, 1, 0}; const int dy8[8] ={-1, 0, 1, 1, 1, 0,-1,-1}; void solve(); int main() { int t = 1; // cin >>t; while(t--)solve(); } void solve(){ int n,k; cin >> n >> k; vi a = readvi(k); rep(i,k) a[i] /= 2; set<int> st(all(a)); auto check = [&](int l)-> bool { vi nx(n,-1); rep(i,n){ auto itr = st.lower_bound(i); int ind; if(itr == st.end()){ itr = st.begin(); ind = n + *itr+1; }else ind = *itr+1; auto nxitr = next(itr); int nind; if(nxitr == st.end()){ nxitr = st.begin(); nind = n + *nxitr+1; } else{ if(ind >= n) nind = n + *nxitr+1; else nind = *nxitr +1; } if(ind - i >= l) nx[i] = ind % n; else if(nind - i > l) nx[i] = (i+l) % n; } vi saw(n,0); int ww = 0; rep(i,n){ if(saw[i] == 0){ int nw = i; ww++; while(true){ if(saw[nw] == ww) return true; if(saw[nw] != 0) break; saw[nw] = ww; if(nx[nw] == -1) break; nw = nx[nw]; } } } return false; }; int ok = 1, ng = n; while(ng - ok > 1){ int mid = (ok + ng) / 2; if(check(mid)) ok = mid; else ng = mid; } print(ok * 2); }