結果
問題 | No.1117 数列分割 |
ユーザー | 👑 tute7627 |
提出日時 | 2020-07-17 22:42:06 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 525 ms / 3,000 ms |
コード長 | 6,111 bytes |
コンパイル時間 | 2,656 ms |
コンパイル使用メモリ | 220,752 KB |
実行使用メモリ | 73,984 KB |
最終ジャッジ日時 | 2024-11-30 03:49:01 |
合計ジャッジ時間 | 8,401 ms |
ジャッジサーバーID (参考情報) |
judge2 / 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
6,820 KB |
testcase_01 | AC | 2 ms
6,816 KB |
testcase_02 | AC | 2 ms
6,820 KB |
testcase_03 | AC | 35 ms
8,832 KB |
testcase_04 | AC | 31 ms
8,192 KB |
testcase_05 | AC | 2 ms
6,816 KB |
testcase_06 | AC | 2 ms
6,816 KB |
testcase_07 | AC | 2 ms
6,820 KB |
testcase_08 | AC | 26 ms
7,680 KB |
testcase_09 | AC | 9 ms
6,820 KB |
testcase_10 | AC | 28 ms
7,808 KB |
testcase_11 | AC | 116 ms
21,760 KB |
testcase_12 | AC | 141 ms
23,296 KB |
testcase_13 | AC | 169 ms
30,848 KB |
testcase_14 | AC | 178 ms
32,512 KB |
testcase_15 | AC | 258 ms
39,040 KB |
testcase_16 | AC | 296 ms
43,776 KB |
testcase_17 | AC | 25 ms
7,680 KB |
testcase_18 | AC | 452 ms
73,856 KB |
testcase_19 | AC | 510 ms
73,856 KB |
testcase_20 | AC | 238 ms
37,632 KB |
testcase_21 | AC | 351 ms
73,984 KB |
testcase_22 | AC | 491 ms
72,960 KB |
testcase_23 | AC | 481 ms
73,088 KB |
testcase_24 | AC | 465 ms
71,936 KB |
testcase_25 | AC | 525 ms
71,936 KB |
testcase_26 | AC | 2 ms
6,816 KB |
testcase_27 | AC | 17 ms
6,820 KB |
testcase_28 | AC | 17 ms
6,816 KB |
ソースコード
//#define _GLIBCXX_DEBUG #include<bits/stdc++.h> using namespace std; #define endl '\n' #define lfs cout<<fixed<<setprecision(10) #define ALL(a) (a).begin(),(a).end() #define ALLR(a) (a).rbegin(),(a).rend() #define spa << " " << #define fi first #define se second #define MP make_pair #define MT make_tuple #define PB push_back #define EB emplace_back #define rep(i,n,m) for(ll i = (n); i < (ll)(m); i++) #define rrep(i,n,m) for(ll i = (ll)(m) - 1; i >= (ll)(n); i--) using ll = long long; using ld = long double; const ll MOD1 = 1e9+7; const ll MOD9 = 998244353; const ll INF = 1e18; using P = pair<ll, ll>; template<typename T1, typename T2> bool chmin(T1 &a,T2 b){if(a>b){a=b;return true;}else return false;} template<typename T1, typename T2> bool chmax(T1 &a,T2 b){if(a<b){a=b;return true;}else return false;} ll median(ll a,ll b, ll c){return a+b+c-max({a,b,c})-min({a,b,c});} void ans1(bool x){if(x) cout<<"Yes"<<endl;else cout<<"No"<<endl;} void ans2(bool x){if(x) cout<<"YES"<<endl;else cout<<"NO"<<endl;} void ans3(bool x){if(x) cout<<"Yay!"<<endl;else cout<<":("<<endl;} template<typename T1,typename T2> void ans(bool x,T1 y,T2 z){if(x)cout<<y<<endl;else cout<<z<<endl;} template<typename T> void debug(vector<vector<T>>&v,ll h,ll w){for(ll i=0;i<h;i++) {cout<<v[i][0];for(ll j=1;j<w;j++)cout spa v[i][j];cout<<endl;}}; void debug(vector<string>&v,ll h,ll w){for(ll i=0;i<h;i++) {for(ll j=0;j<w;j++)cout<<v[i][j];cout<<endl;}}; template<typename T> void debug(vector<T>&v,ll n){if(n!=0)cout<<v[0]; for(ll i=1;i<n;i++)cout spa v[i];cout<<endl;}; template<typename T> vector<vector<T>>vec(ll x, ll y, T w){ vector<vector<T>>v(x,vector<T>(y,w));return v;} ll gcd(ll x,ll y){ll r;while(y!=0&&(r=x%y)!=0){x=y;y=r;}return y==0?x:y;} vector<ll>dx={1,-1,0,0,1,1,-1,-1}; vector<ll>dy={0,0,1,-1,1,-1,1,-1}; template<typename T> vector<T> make_v(size_t a,T b){return vector<T>(a,b);} template<typename... Ts> auto make_v(size_t a,Ts... ts){ return vector<decltype(make_v(ts...))>(a,make_v(ts...)); } template<typename T1, typename T2> ostream &operator<<(ostream &os, const pair<T1, T2>&p){ return os << p.first << " " << p.second; } //mt19937 mt(chrono::steady_clock::now().time_since_epoch().count()); template< typename Monoid ,typename F> struct SegmentTree { int sz, n; vector< Monoid > seg; const F f; const Monoid M1; SegmentTree(int n, const F f, const Monoid &M1) : f(f), M1(M1), n(n){ sz = 1; while(sz < n) sz <<= 1; seg.assign(2 * sz, M1); } void set(int k, const Monoid &x) { seg[k + sz] = x; } void build() { for(int k = sz - 1; k > 0; k--) { seg[k] = f(seg[2 * k + 0], seg[2 * k + 1]); } } void update(int k, const Monoid &x) { k += sz; seg[k] = x; while(k >>= 1) { seg[k] = f(seg[2 * k + 0], seg[2 * k + 1]); } } Monoid query(int a, int b) { if(a>=b)return M1; Monoid L = M1, R = M1; for(a += sz, b += sz; a < b; a >>= 1, b >>= 1) { if(a & 1) L = f(L, seg[a++]); if(b & 1) R = f(seg[--b], R); } return f(L, R); } Monoid operator[](const int &k) const { return seg[k + sz]; } template< typename C > int find_subtree(int a, const C &check, Monoid &M, bool type) { while(a < sz) { Monoid nxt = type ? f(seg[2 * a + type], M) : f(M, seg[2 * a + type]); if(check(nxt)) a = 2 * a + type; else M = nxt, a = 2 * a + 1 - type; } return a - sz; } template< typename C > int find_first(int a, const C &check) { Monoid L = M1; if(a <= 0) { if(check(f(L, seg[1]))) return find_subtree(1, check, L, false); return -1; } int b = sz; for(a += sz, b += sz; a < b; a >>= 1, b >>= 1) { if(a & 1) { Monoid nxt = f(L, seg[a]); if(check(nxt)) return find_subtree(a, check, L, false); L = nxt; ++a; } } return -1; } template< typename C > int find_last(int b, const C &check) { Monoid R = M1; if(b >= sz) { if(check(f(seg[1], R))) return find_subtree(1, check, R, true); return -1; } int a = sz; for(b += sz; a < b; a >>= 1, b >>= 1) { if(b & 1) { Monoid nxt = f(seg[--b], R); if(check(nxt)) return find_subtree(b, check, R, true); R = nxt; } } return -1; } void print(){ for(ll i=0;i<n;i++)if((*this)[i]==M1)cout<<"x ";else cout<<(*this)[i]<<" "; cout<<endl; } }; template<typename T> struct SWAG{ stack<pair<T,T>>st_front,st_back; T func(T x, T y){return max(x,y);} void push(T x){ if(st_back.empty())st_back.emplace(x,x); else st_back.emplace(x,func(st_back.top().second,x)); } void pop(){ if(st_front.empty()){ while(!st_back.empty()){ if(st_front.empty())st_front.emplace(st_back.top().first,st_back.top().first); else st_front.emplace(st_back.top().first,func(st_back.top().first, st_front.top().second)); st_back.pop(); } } st_front.pop(); } T query(){ if(st_front.empty())return st_back.top().second; else if(st_back.empty())return st_front.top().second; else return func(st_front.top().second, st_back.top().second); } bool empty(){ return st_front.empty() && st_back.empty(); } int size(){ return st_front.size() + st_back.size(); } }; int main(){ cin.tie(nullptr); ios_base::sync_with_stdio(false); ll res=0,buf=0; bool judge = true; ll n,k,m;cin>>n>>k>>m; vector<ll>a(n); rep(i,0,n)cin>>a[i]; vector<ll>b(n+1); rep(i,0,n)b[i+1]=b[i]+a[i]; auto f=[&](ll x,ll y){return max(x,y);}; vector<P>p(n+1); rep(i,0,n+1)p[i]=MP(b[i],i); sort(ALL(p)); vector<ll>idx(n+1); rep(i,0,n+1)idx[p[i].se]=i; auto dp=vec(n+1,k+1,-INF); dp[0][0]=0; rep(j,1,k+1){ SWAG<ll>sw1,sw2; rep(i,0,n){ sw1.push(dp[i][j-1]-b[i]); sw2.push(dp[i][j-1]+b[i]); if(i>=m){ sw1.pop(); sw2.pop(); } ll mx1=sw1.query(); ll mx2=sw2.query(); ll mx=max(mx1+b[i+1],mx2-b[i+1]); if(i==n-1&&j==k)res=mx; dp[i+1][j]=mx; } } //debug(idx,n+1); cout<<res<<endl; return 0; }