結果
問題 | No.484 収穫 |
ユーザー |
![]() |
提出日時 | 2017-02-10 23:51:30 |
言語 | C++11 (gcc 13.3.0) |
結果 |
AC
|
実行時間 | 448 ms / 3,000 ms |
コード長 | 3,124 bytes |
コンパイル時間 | 1,170 ms |
コンパイル使用メモリ | 105,048 KB |
実行使用メモリ | 38,732 KB |
最終ジャッジ日時 | 2024-10-13 13:09:32 |
合計ジャッジ時間 | 6,991 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge5 |
(要ログイン)
ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 21 |
ソースコード
#include <string>#include <vector>#include<iostream>#include<cstdio>#include<cstdlib>#include<stack>#include<queue>#include<cmath>#include<algorithm>#include<functional>#include<list>#include<deque>#include<bitset>#include<set>#include<map>#include<unordered_map>#include<unordered_set>#include<cstring>#include<sstream>#include<complex>#include<iomanip>#include<numeric>#include<cassert>#define X first#define Y second#define pb push_back#define rep(X,Y) for (int (X) = 0;(X) < (Y);++(X))#define reps(X,S,Y) for (int (X) = S;(X) < (Y);++(X))#define rrep(X,Y) for (int (X) = (Y)-1;(X) >=0;--(X))#define repe(X,Y) for ((X) = 0;(X) < (Y);++(X))#define peat(X,Y) for (;(X) < (Y);++(X))#define all(X) (X).begin(),(X).end()#define rall(X) (X).rbegin(),(X).rend()#define eb emplace_back#define UNIQUE(X) (X).erase(unique(all(X)),(X).end())#define Endl endlusing namespace std;typedef long long ll;typedef pair<int,int> pii;typedef pair<ll,ll> pll;template<class T> using vv=vector<vector<T>>;template<class T> ostream& operator<<(ostream &os, const vector<T> &t) {os<<"{"; rep(i,t.size()) {os<<t[i]<<",";} os<<"}"<<endl; return os;}template<class S, class T> ostream& operator<<(ostream &os, const pair<S,T> &t) { return os<<"("<<t.first<<","<<t.second<<")";}template<class T> inline bool MX(T &l,const T &r){return l<r?l=r,1:0;}template<class T> inline bool MN(T &l,const T &r){return l>r?l=r,1:0;}#define out(args...){vector<string> a_r_g_s=s_p_l_i_t(#args, ','); e_r_r(a_r_g_s.begin(), args); }vector<string> s_p_l_i_t(const string& s, char c) { vector<string> v; stringstream ss(s); string x; while(getline(ss,x,c)) v.emplace_back(x); returnmove(v);}void e_r_r(vector<string>::iterator it) {}template<typename T, typename... Args> void e_r_r(vector<string>::iterator it, T a, Args... args){ if(*it==" 1"||*it=="1") cerr<<endl; else cerr <<it -> substr((*it)[0] == ' ', it -> length()) << " = " << a << ", "; e_r_r(++it, args...);}const ll MOD=1e9+7;const ll INF=1e15;ll dp[2123][2123];int solve(const vector<ll> &v){if(*min_element(all(v))<0) return 0;fill(dp[0],dp[2123],INF);int n=v.size();rep(i,n) dp[i][i]=0;rep(d,n)rep(i,n-d){if(v[i+d]<dp[i][i+d]) dp[i][i+d]=INF;if(v[i]<dp[i+d][i]) dp[i+d][i]=INF;if(i){MN(dp[i+d][i-1], dp[i][i+d]+d+1);MN(dp[i+d][i-1], dp[i+d][i]+1);}if(i+d+1<n){MN(dp[i][i+d+1], dp[i][i+d]+1);MN(dp[i][i+d+1], dp[i+d][i]+d+1);}}//out(v); rep(i,4){rep(j,4) cout<<dp[i][j]<<",";cout<<endl;}return INF>dp[0][n-1] || INF>dp[n-1][0];}int main(){// solve({2,1,1});// return 0;ios_base::sync_with_stdio(false);cout<<fixed<<setprecision(0);int n;cin>>n;vector<int> a(n);rep(i,n) cin>>a[i];if(a==vector<int>(1)){cout<<0<<endl;return 0;}int mx=*max_element(all(a));if(mx==0){cout<<n-1<<endl;return 0;}ll l=mx-1,r=mx+5000;while(r-l>1){ll m=(l+r)/2;vector<ll> v(n);rep(i,n) v[i]=m-a[i];//out(m,1);if(solve(v)) r=m;else l=m;}assert(r>=mx);cout<<r<<endl;return 0;}