結果

問題 No.1188 レベルX門松列
ユーザー hotman78hotman78
提出日時 2020-08-22 13:55:28
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 40 ms / 2,000 ms
コード長 4,317 bytes
コンパイル時間 5,365 ms
コンパイル使用メモリ 415,052 KB
実行使用メモリ 7,280 KB
最終ジャッジ日時 2024-11-14 23:33:04
合計ジャッジ時間 6,558 ms
ジャッジサーバーID
(参考情報)
judge3 / judge4
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 17 ms
6,820 KB
testcase_01 AC 32 ms
6,820 KB
testcase_02 AC 29 ms
6,816 KB
testcase_03 AC 39 ms
6,820 KB
testcase_04 AC 24 ms
7,280 KB
testcase_05 AC 2 ms
6,816 KB
testcase_06 AC 14 ms
6,820 KB
testcase_07 AC 27 ms
7,280 KB
testcase_08 AC 26 ms
7,276 KB
testcase_09 AC 2 ms
6,820 KB
testcase_10 AC 2 ms
6,816 KB
testcase_11 AC 5 ms
6,816 KB
testcase_12 AC 5 ms
6,816 KB
testcase_13 AC 5 ms
6,820 KB
testcase_14 AC 24 ms
6,816 KB
testcase_15 AC 40 ms
6,820 KB
testcase_16 AC 2 ms
6,820 KB
testcase_17 AC 32 ms
6,816 KB
testcase_18 AC 2 ms
6,816 KB
testcase_19 AC 30 ms
6,816 KB
testcase_20 AC 2 ms
6,816 KB
testcase_21 AC 2 ms
6,816 KB
testcase_22 AC 2 ms
6,816 KB
testcase_23 AC 2 ms
6,816 KB
権限があれば一括ダウンロードができます
コンパイルメッセージ
main.cpp:49:22: warning: use of 'auto' in parameter declaration only available with '-std=c++20' or '-fconcepts'
   49 | inline auto reversed(auto v){reverse(v.begin(),v.end());return v;}
      |                      ^~~~
main.cpp:56:12: warning: use of 'auto' in parameter declaration only available with '-std=c++20' or '-fconcepts'
   56 | bool chmin(auto& s,const auto& t){bool res=s>t;s=min(s,t);return res;}
      |            ^~~~
main.cpp:56:26: warning: use of 'auto' in parameter declaration only available with '-std=c++20' or '-fconcepts'
   56 | bool chmin(auto& s,const auto& t){bool res=s>t;s=min(s,t);return res;}
      |                          ^~~~
main.cpp:57:12: warning: use of 'auto' in parameter declaration only available with '-std=c++20' or '-fconcepts'
   57 | bool chmax(auto& s,const auto& t){bool res=s<t;s=max(s,t);return res;}
      |            ^~~~
main.cpp:57:26: warning: use of 'auto' in parameter declaration only available with '-std=c++20' or '-fconcepts'
   57 | bool chmax(auto& s,const auto& t){bool res=s<t;s=max(s,t);return res;}
      |                          ^~~~
main.cpp:66:25: warning: use of 'auto' in parameter declaration only available with '-std=c++20' or '-fconcepts'
   66 | lint bs(lint mn,lint mx,auto func){
      |                         ^~~~

ソースコード

diff #

#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
#pragma GCC push_options
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx")
#include<bits/stdc++.h>
#include <xmmintrin.h>
#include <immintrin.h>
using namespace::std;
__attribute__((constructor))void init(){cin.tie(0);ios::sync_with_stdio(false);cout<<fixed<<setprecision(15);}
#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/priority_queue.hpp>
#include<ext/pb_ds/tag_and_trait.hpp>
// #include <boost/multiprecision/cpp_dec_float.hpp>
// #include <boost/multiprecision/cpp_int.hpp>
// namespace mp = boost::multiprecision;
// typedef mp::number<mp::cpp_dec_float<0>> cdouble;
// typedef mp::cpp_int cint;
template<typename T>inline void output(T t){bool f=0;for(auto i:t){cout<<(f?" ":"")<<i;f=1;}cout<<endl;}
template<typename T>inline void output2(T t){for(auto i:t)output(i);}
template<typename T>inline void debug(T t){bool f=0;for(auto i:t){cerr<<(f?" ":"")<<i;f=1;}cerr<<endl;}
template<typename T>inline void debug2(T t){for(auto i:t)debug(i);}
template<typename T>using pbds=__gnu_pbds::tree<T,__gnu_pbds::null_type,less<T>,__gnu_pbds::rb_tree_tag,__gnu_pbds::tree_order_statistics_node_update>;
template<typename T>using pbds_map=__gnu_pbds::tree<T,T,less<T>,__gnu_pbds::rb_tree_tag,__gnu_pbds::tree_order_statistics_node_update>;
template<typename T,typename E>using hash_map=__gnu_pbds::gp_hash_table<T,E>;
template<typename T>using pqueue =__gnu_pbds::priority_queue<T, greater<T>,__gnu_pbds::rc_binomial_heap_tag>;
typedef long long lint;
#define INF (1LL<<60)
#define IINF (1<<30)
#define LINF (9223372036854775807LL)
#define EPS (1e-10)
#define endl ('\n')
//#define MOD 1000000007LL
#define MOD 998244353LL
//#define MOD 1000000000039LL
typedef vector<lint> vec;
typedef vector<vector<lint>> mat;
typedef vector<vector<vector<lint>>> mat3;
typedef vector<string> svec;
typedef vector<vector<string>> smat;
#define rep(i,...) for(auto i:range(__VA_ARGS__)) 
#define rrep(i,...) for(auto i:reversed(range(__VA_ARGS__)))
#define repi(i,a,b) for(lint i=lint(a);i<(lint)(b);++i)
#define rrepi(i,a,b) for(lint i=lint(b)-1;i>=lint(a);--i)
#define irep(i) for(lint i=0;;++i)
inline vector<int64_t> range(int64_t n){vector<int64_t>v(n);iota(v.begin(),v.end(),0LL);return v;}
inline vector<int64_t> range(int64_t a,int64_t b){vector<int64_t>v(b-a);iota(v.begin(),v.end(),a);return v;}
inline vector<int64_t> range(int64_t a,int64_t b,int64_t c){vector<int64_t>v((b-a+c-1)/c);for(int i=0;i<(int)v.size();++i)v[i]=i?v[i-1]+c:a;return v;}
inline auto reversed(auto v){reverse(v.begin(),v.end());return v;}
#define all(n) begin(n),end(n)
#define dist(a,b,c,d) sqrt(pow(a-c,2)+pow(b-d,2))
//inline lint gcd(lint A,lint B){return B?gcd(B,A%B):A;}
//inline lint lcm(lint A,lint B){return A/gcd(A,B)*B;}
// inline cint cgcd(cint A,cint B){return B?cgcd(B,A%B):A;}
// inline cint clcm(cint A,cint B){return A/cgcd(A,B)*B;}
bool chmin(auto& s,const auto& t){bool res=s>t;s=min(s,t);return res;}
bool chmax(auto& s,const auto& t){bool res=s<t;s=max(s,t);return res;}
const vector<lint> dx={1,0,-1,0,1,1,-1,-1};
const vector<lint> dy={0,1,0,-1,1,-1,1,-1};
#define SUM(v) accumulate(all(v),0LL)
auto call=[](auto f,auto... args){return f(f,args...);};
template<typename T,typename ...Args>auto make_vector(T x,int arg,Args ...args){if constexpr(sizeof...(args)==0)return vector<T>(arg,x);else return vector(arg,make_vector<T>(x,args...));}
int msb(int x){return 32-__builtin_clz(x);}


lint bs(lint mn,lint mx,auto func){
    mn--;
    mx++;
	while(mx-mn>1){
		lint mid=(mn+mx)/2;
		if(!func(mid))mx=mid;
		else mn=mid;
	}
    return mn;
}


int main(){
    lint n;
    cin>>n;
    vec a(n);
    rep(i,n)cin>>a[i];
    lint ans=0;
    rep(_,2){
        vec v,l(n),r(n);
        rep(i,n){
            auto itr=lower_bound(all(v),a[i]);
            if(itr==v.end())v.push_back(a[i]);
            else v[itr-v.begin()]=a[i];
            l[i]=v.size();
        }
        v.clear();
        rrep(i,n){
            auto itr=lower_bound(all(v),a[i]);
            if(itr==v.end())v.push_back(a[i]);
            else v[itr-v.begin()]=a[i];
            r[i]=v.size();
        }
        rep(i,n){
            chmax(ans,min(l[i],r[i])-1);
        }
        rep(i,n)a[i]*=-1;
    }
    cout<<ans<<endl;
}
0