結果
問題 | No.2157 崖 |
ユーザー | eQe |
提出日時 | 2023-08-13 20:30:10 |
言語 | C++23 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 2,351 ms / 6,000 ms |
コード長 | 9,202 bytes |
コンパイル時間 | 5,916 ms |
コンパイル使用メモリ | 329,664 KB |
実行使用メモリ | 11,648 KB |
最終ジャッジ日時 | 2024-05-01 11:30:13 |
合計ジャッジ時間 | 26,886 ms |
ジャッジサーバーID (参考情報) |
judge3 / 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
6,816 KB |
testcase_01 | AC | 2 ms
6,816 KB |
testcase_02 | AC | 1 ms
6,816 KB |
testcase_03 | AC | 2 ms
6,944 KB |
testcase_04 | AC | 1 ms
6,940 KB |
testcase_05 | AC | 1 ms
6,944 KB |
testcase_06 | AC | 2 ms
6,944 KB |
testcase_07 | AC | 1 ms
6,944 KB |
testcase_08 | AC | 2 ms
6,940 KB |
testcase_09 | AC | 1 ms
6,944 KB |
testcase_10 | AC | 2 ms
6,944 KB |
testcase_11 | AC | 2 ms
6,944 KB |
testcase_12 | AC | 2 ms
6,940 KB |
testcase_13 | AC | 1,864 ms
8,832 KB |
testcase_14 | AC | 2,026 ms
10,880 KB |
testcase_15 | AC | 1,967 ms
8,704 KB |
testcase_16 | AC | 1,952 ms
8,704 KB |
testcase_17 | AC | 1,733 ms
9,856 KB |
testcase_18 | AC | 1,728 ms
9,728 KB |
testcase_19 | AC | 2,351 ms
10,112 KB |
testcase_20 | AC | 2,213 ms
11,648 KB |
testcase_21 | AC | 2,217 ms
11,520 KB |
testcase_22 | AC | 1,622 ms
9,472 KB |
testcase_23 | AC | 2 ms
6,940 KB |
testcase_24 | AC | 4 ms
6,940 KB |
ソースコード
#include<bits/stdc++.h> #include<atcoder/all> #define eb emplace_back #define all(a) (a).begin(),(a).end() #define RD(T,...) T __VA_ARGS__;li(__VA_ARGS__) #define LL(...) RD(ll,__VA_ARGS__) #define JO(a,b) a##b #define jo(a,b) JO(a,b) #define uq_symbol(a) jo(a,__LINE__) #define FE(v,e,...) for(au&&__VA_OPT__([)e __VA_OPT__(,__VA_ARGS__]):v) #define FO(n) for(ll uq_symbol(i)=n;uq_symbol(i)-->0;) #define FOR(i,...) for(au[i,i##O,i##E]=rng(0,__VA_ARGS__);i<i##O;i+=i##E) #define fe(v,...) FE(v,__VA_ARGS__) #define fo(i,...) FO##__VA_OPT__(R)(i __VA_OPT__(,__VA_ARGS__)) #define of(i,...) for(au[i,i##O,i##E]=rng(1,__VA_ARGS__);i>=i##O;i-=i##E) #define I template #define J class #define au auto #define rr return using std::cin,std::cout,std::begin,std::end,std::rbegin; using std::swap,std::move,std::abs,std::prev,std::next; using std::tuple,std::array,std::bitset,std::minmax,std::get; using vo=void;using bo=bool; vo solve(); I<J A,J B>constexpr bo same=std::is_same_v<A,B>; using is=std::istream;using os=std::ostream; using dd=long double;using ll=long long;using ull=unsigned long long; using lll=__int128_t;using ulll=__uint128_t;using str=std::string; using namespace atcoder;using ml=modint;au&operator<<(os&o,const ml&x){rr o<<x.val();} constexpr ll oo=3e18; constexpr ll dx[]{-1,0,1,0,-1,1,1,-1},dy[]{0,-1,0,1,-1,-1,1,1}; constexpr char sp=32; constexpr char nl=10; au rng(bo s,ll a,ll b=oo,ll c=1){if(b==oo)b=a,(s?b:a)=0;rr tuple{a-s,b,c};} I<J T>T zz(T x){rr x<0?-x:x;} I<J T>ll len(const T&a){rr a.size();} I<J...A>au max(const A&...a){rr max(std::initializer_list<std::common_type_t<A...>>{a...});} struct edg{ ll t,w; edg(){} edg(ll t,ll w=1):t(t),w(w){} friend os&operator<<(os&o,const edg&e){rr o<<e.t<<sp<<e.w;} }; I<J A,J B=A>struct cp{ A a={};B b={}; cp(){} cp(A a,B b):a(a),b(b){} cp(std::pair<A,B>p):a(p.first),b(p.second){} bo operator==(const cp&c)const{rr a==c.a&&b==c.b;} bo operator<(const cp&c)const{rr a!=c.a?a<c.a:b<c.b;} bo operator>(const cp&c)const{rr a!=c.a?a>c.a:b>c.b;} friend is&operator>>(is&i,cp&c){rr i>>c.a>>c.b;} friend os&operator<<(os&o,const cp&c){rr o<<c.a<<sp<<c.b;} };using cl=cp<ll>; I<J A,J B=A,J C=A>struct tr{ A a={};B b={};C c={}; tr(){} tr(A a,B b,C c):a(a),b(b),c(c){} bo operator==(const tr&t)const{rr a==t.a&&b==t.b&&c==t.c;} au operator<(const tr&t)const{rr a!=t.a?a<t.a:b!=t.b?b<t.b:c<t.c;} friend is&operator>>(is&i,tr&t){rr i>>t.a>>t.b>>t.c;} friend os&operator<<(os&o,const tr&t){rr o<<t.a<<sp<<t.b<<sp<<t.c;} };using tl=tr<ll>; I<J T>T&srt(T&a){sort(all(a));rr a;} I<J T>T&rv(T&a){reverse(all(a));rr a;} I<J T>decltype(au)bg(T&a){rr*begin(a);} I<J T>decltype(au)rb(T&a){rr*rbegin(a);} I<J T>au pof(T&a){au r=bg(a);a.pop_front();rr r;} I<J T>au pob(T&a){au r=rb(a);a.pop_back();rr r;} I<J T>au pot(T&a){au r=a.top();a.pop();rr r;} I<J T,J U=T>using map=std::map<T,U>; I<J T,J U>os&operator<<(os&o,const map<T,U>&m){fe(m,e)o<<e.first<<sp<<e.second<<nl;rr o;} I<J T,J U=T>using umap=std::unordered_map<T,U>; I<J T,J U>os&operator<<(os&o,const umap<T,U>&m){fe(m,e)o<<e.first<<sp<<e.second<<nl;rr o;} I<J T>struct set:std::set<T>{ set(const std::vector<T>&a={}){fe(a,e)this->emplace(e);} friend os&operator<<(os&o,const set&s){fe(s,e)o<<e<<str(&e!=&s.back(),sp);rr o;} }; I<J T>struct mset:std::multiset<T>{ mset(const std::vector<T>&a={}){fe(a,e)this->emplace(e);} friend os&operator<<(os&o,const mset&s){fe(s,e)o<<e<<str(&e!=&s.back(),sp);rr o;} }; I<J T>T pof(set<T>&s){T r=bg(s);s.erase(s.begin());rr r;} I<J T>T pob(set<T>&s){T r=rb(s);s.erase(prev(s.end()));rr r;} I<J T>T pof(mset<T>&s){T r=bg(s);s.erase(s.begin());rr r;} I<J T>T pob(mset<T>&s){T r=rb(s);s.erase(prev(s.end()));rr r;} I<J V>struct ve; I<J V>constexpr bo isv=0; I<J V>constexpr bo isv<ve<V>> =1; I<J V>constexpr bo isv<std::vector<V>> =1; I<J V>au rawv(V){if constexpr(isv<V>)rr rawv(V(1)[0]);else rr V();} I<J V>struct ve:std::vector<V>{ using std::vector<V>::vector; using T=decltype(rawv(V())); I<J U>ve(const std::vector<U>&v={}){fe(v,e)this->eb(e);} ve&operator+=(const ve&u){au&v=*this;fo(i,len(v))v[i]+=u[i];rr v;} ve&operator-=(const ve&u){au&v=*this;fo(i,len(v))v[i]-=u[i];rr v;} ve&operator^=(const ve&u){fe(u,e)this->eb(e);rr*this;} ve&operator+=(const T&x){au&v=*this;fe(v,e)e+=x;rr v;} ve&operator-=(const T&x){au&v=*this;fe(v,e)e-=x;rr v;} ve&operator*=(const T&x){au&v=*this;fe(v,e)e*=x;rr v;} I<size_t n>au&operator+=(const bitset<n>&a){fo(i,n)(*this)[i]+=a[i];rr*this;} I<size_t n>au&operator-=(const bitset<n>&a){fo(i,n)(*this)[i]-=a[i];rr*this;} ve operator+(const ve&u)const{rr ve(*this)+=u;} ve operator-(const ve&u)const{rr ve(*this)-=u;} ve operator^(const ve&u)const{rr ve(*this)^=u;} ve operator+(const T&x)const{rr ve(*this)+=x;} ve operator-(const T&x)const{rr ve(*this)-=x;} ve operator*(const T&x)const{rr ve(*this)*=x;} ve&operator++(){rr*this+=1;} ve&operator--(){rr*this-=1;} ve operator-()const{rr ve(*this)*=-1;} au lower_bound(const V&x)const{rr std::lower_bound(all(*this),x);} au upper_bound(const V&x)const{rr std::upper_bound(all(*this),x);} I<J F>au scan(F f)const{cp<T,bo>r;fe(*this,e)if constexpr(!isv<V>)r.b?f(r.a,e),r:r={e,1};else if(au s=e.scan(f);s.b)r.b?f(r.a,s.a),r:r=s;rr r;} T max()const{rr scan([](T&a,const T&b){a<b?a=b:0;}).a;} vo fill(T x={}){fe(*this,e)if constexpr(isv<V>)e.fill(x);else e=x;} }; I<J T=ll,size_t n,size_t i=0>au vec(const ll(&s)[n],T x={}){ if constexpr(n==i+1)rr ve<T>(s[i],x); else{au X=vec<T,n,i+1>(s,x);rr ve<decltype(X)>(s[i],X);} } I<ll n,J...A>vo setsize(const ll(&l)[n],A&...a){((a=vec(l,rawv(a))),...);} I<J T>using vve=ve<ve<T>>;using vl=ve<ll>;using vvl=vve<ll>; using gl=ve<ve<ll>>;using ge=ve<ve<edg>>; struct io{io(){cin.tie(0)->sync_with_stdio(0); cout<<std::fixed<<std::setprecision(15);std::cerr<<nl;}}io; os&operator<<(os&o,const ulll&x){rr(x<10?o:o<<x/10)<<ll(x%10);} os&operator<<(os&o,const lll&x){rr o<<str(x<0,'-')<<ulll(zz(x));} I<size_t n>os&operator<<(os&o,const bitset<n>&b){fo(i,n)o<<b[i];rr o;} I<J...A>os&operator<<(os&o,const tuple<A...>&t){ apply([&](const au&...a){ll i=0;(((o<<a<<str(++i!=sizeof...(a),sp))),...);},t);rr o;} I<J V>os&operator<<(os&o,const std::vector<V>&v){fe(v,e)o<<e<<str(&e!=&rb(v),isv<V>?nl:sp);rr o;} I<char c=sp,J...A>vo pp(const A&...a){ll i=0;((cout<<a<<str(++i!=sizeof...(a),c)),...);cout<<nl;} I<J V>is&operator>>(is&i,std::vector<V>&v){fe(v,e)i>>e;rr i;} I<J...A>vo li(A&...a){(cin>>...>>a);} I<J F>ll bsl(F f,ll o,ll n){while(zz(o-n)>1)(f((o+n)/2)?o:n)=(o+n)/2;rr o;} I<J F>struct rec:F{rec(F&&f):F(std::forward<F>(f)){}I<J...A>decltype(au)operator()(A&&...a)const{rr F::operator()(*this,std::forward<A>(a)...);}}; template<class S,S op(S,S),S e()>struct swag{ ve<S>pre,pre_row,suf,suf_row; swag(const ve<S>&a={}){ fe(a,x)eb(x); } ll size()const{ return len(pre)+len(suf); } template<class...A>vo eb(A&&...a){ S x(std::forward<A>(a)...); suf.eb(op((len(suf)?rb(suf):e()),x)); suf_row.eb(x); } S pof(){ move(); pob(pre_row); return pob(pre); } S front(){ move(); return rb(pre_row); } S fold(){ if(!size())return e(); if(!len(pre))return rb(suf); if(!len(suf))return rb(pre); return op(rb(pre),rb(suf)); } vo move(){ if(!len(pre)){ while(len(suf)){ pre.eb(op(rb(suf_row),(len(pre)?rb(pre):e()))); pre_row.eb(rb(suf_row)); pob(suf); pob(suf_row); } } } friend os&operator<<(os&o,const swag&s){auto u=s.pre_row,v=s.suf_row;return o<<rv(u)<<": "<<v;} }; using std::true_type,std::false_type; template<class T>struct is_tp:false_type{}; template<class...A>struct is_tp<tuple<A...>>:true_type{}; template<class T>struct is_ar:false_type{}; template<class T,ll n>struct is_ar<std::array<T,n>>:true_type{}; template<class T>struct is_cp:false_type{}; template<class A,class B>struct is_cp<cp<A,B>>:true_type{}; template<class T>constexpr bo is_cp_v = is_cp<T>::value; template<class T>struct is_tr:false_type{}; template<class A,class B,class C>struct is_tr<tr<A,B,C>>:true_type{}; template<class T>constexpr bo is_tr_v = is_tr<T>::value; template<class T,auto x>T fill(){ if constexpr(same<T,decltype(x)>)return x; else if constexpr(is_cp_v<T>)return{x,x}; else if constexpr(is_tr_v<T>)return{x,x,x}; else if constexpr(same<T,array<ll,std::tuple_size_v<T>>>){T r;fe(r,e)e=x;return r;} assert(0); } template<class T>T omax(T a,T b){return b<a?a:b;} template<class T>T omin(T a,T b){return a<b?a:b;} template<class T>T osum(T a,T b){return a+b;} int main(){ll T=1;fo(T)solve();} vo solve(){ LL(N,M); vve<int>a;setsize({N,M},a);li(a); fe(a,e)srt(e); ll ans=bsl([&](ll X){//崖をX以下にできるか ve<int>dp(M,1),nx(M); fo(i,1,N){ using S=cp<int>; swag<S,omax<S>,fill<S,0>>sw; ll cu=0; fo(j,M){ while(len(sw)&&a[i][j]-X>sw.front().b)sw.pof(); while(cu<M&&a[i-1][cu]<a[i][j]-X)cu++; while(cu<M&&a[i-1][cu]<=a[i][j])sw.eb(dp[cu],a[i-1][cu]),cu++; nx[j]=sw.fold().a; } swap(dp,nx); nx.fill(); } rr dp.max()==1; },1e9,-1); pp(ans!=1e9?ans:-1); }