結果
| 問題 |
No.209 Longest Mountain Subsequence
|
| コンテスト | |
| ユーザー |
inu_hir0shi
|
| 提出日時 | 2015-05-15 23:21:15 |
| 言語 | C++11(廃止可能性あり) (gcc 13.3.0) |
| 結果 |
AC
|
| 実行時間 | 99 ms / 2,000 ms |
| コード長 | 3,341 bytes |
| コンパイル時間 | 1,593 ms |
| コンパイル使用メモリ | 165,312 KB |
| 実行使用メモリ | 5,376 KB |
| 最終ジャッジ日時 | 2024-07-06 04:17:14 |
| 合計ジャッジ時間 | 2,246 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 6 |
ソースコード
#include <bits/stdc++.h>
using namespace std;
typedef pair<int,int> PII;
typedef long long LL;
typedef unsigned long long ULL;
template<class T> inline bool amax (T &a, const T &b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool amin (T &a, const T &b) { if (a > b) { a = b; return 1; } return 0; }
template<class T> ostream& operator << (ostream &os, const vector<T> &v) { os << "["; for (typename vector<T>::const_iterator it = v.begin(); it != v.end(); it++) { os << (it != v.begin() ? ", " : "") << *it; } os << "]"; return os; }
template<class T> ostream& operator << (ostream &os, const set<T> &s) { os << "["; for (typename set<T>::const_iterator it = s.begin(); it != s.end(); it++) { os << (it != s.begin() ? ", " : "") << *it; } os << "]"; return os; }
template<class Key, class Val> ostream& operator << (ostream &os, const map<Key, Val> &m) { os << "{"; for (typename map<Key, Val>::const_iterator it = m.begin(); it != m.end(); it++) { os << (it != m.begin() ? ", " : "") << it->first << ":" << it->second; } os << "}"; return os; }
template<class T, class S> ostream& operator << (ostream &os, const pair<T, S> &p) { os << "(" << p.first << ", " << p.second << ")"; return os; }
template <class Target, class Source> inline Target lexical_cast (const Source &s) { Target t; stringstream ss; ss << s; ss >> t; return t; }
//> v < ^ (clock wise)
int dx[] = {1,0,-1,0};
int dy[] = {0,1,0,-1};
const int INFI = 1<<28;
const long long int INFL = 1LL<<60;
const double INFD = 1e+300;
const float INFF = 1e+100;
const double EPS = 1e-8;
int main(){
cout.setf(ios::fixed); cout.precision(10);
ios_base::sync_with_stdio(false);
LL T;
cin >> T;
while (T--) {
LL n;
cin >> n;
vector<LL> a(n);
for (LL i = 0; i < n; i++) cin >> a[i];
vector<vector<LL> > dp1(110, vector<LL>(110, INFL));
for (LL i = 0; i < n; i++) {
dp1[i][0] = 0;
for (LL j = 0; j < i; j++) {
for (LL k = 0; k < n; k++) {
if (dp1[j][k] != INFL && a[j] < a[i] && dp1[j][k] < a[i]-a[j]) {
dp1[i][k+1] = min(dp1[i][k+1], a[i]-a[j]);
}
}
}
}
reverse(a.begin(), a.end());
vector<vector<LL> > dp2(110, vector<LL>(110, INFL));
for (LL i = 0; i < n; i++) {
dp2[i][0] = 0;
for (LL j = 0; j < i; j++) {
for (LL k = 0; k < n; k++) {
if (dp2[j][k] != INFL && a[j] < a[i] && dp2[j][k] < a[i]-a[j]) {
dp2[i][k+1] = min(dp2[i][k+1], a[i]-a[j]);
}
}
}
}
reverse(a.begin(), a.end());
LL ans = 0;
for (LL i = 0; i < n; i++) {
LL tmp1 = 0;
LL tmp2 = 0;
for (LL j = n-1; j >= 0; j--) {
if (dp1[i][j] != INFL) {
tmp1 += j;
break;
}
}
for (LL j = n-1; j >= 0; j--) {
if (dp2[n-i-1][j] != INFL) {
tmp2 += j;
break;
}
}
LL tmp = tmp1 + tmp2;
ans = max(ans, tmp);
}
cout << ans+1 << endl;
}
return 0;
}
inu_hir0shi