結果
問題 | No.209 Longest Mountain Subsequence |
ユーザー | is_eri23 |
提出日時 | 2015-05-16 12:25:00 |
言語 | C++11 (gcc 11.4.0) |
結果 |
AC
|
実行時間 | 337 ms / 2,000 ms |
コード長 | 3,642 bytes |
コンパイル時間 | 2,311 ms |
コンパイル使用メモリ | 172,236 KB |
実行使用メモリ | 13,096 KB |
最終ジャッジ日時 | 2024-07-06 04:46:32 |
合計ジャッジ時間 | 2,911 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
(要ログイン)
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 | 136 ms
13,036 KB |
testcase_01 | AC | 124 ms
13,076 KB |
testcase_02 | AC | 116 ms
13,016 KB |
testcase_03 | AC | 337 ms
13,096 KB |
testcase_04 | AC | 331 ms
12,972 KB |
testcase_05 | AC | 53 ms
12,876 KB |
ソースコード
#include <bits/stdc++.h> #define EPS 1e-9 #define INF 1070000000LL #define MOD 1000000007LL #define fir first #define foreach(it,X) for(auto it=(X).begin();it!=(X).end();it++) #define numa(x,a) for(auto x: a) #define ite iterator #define mp make_pair #define rep(i,n) rep2(i,0,n) #define rep2(i,m,n) for(int i=m;i<(n);i++) #define pb push_back #define pf push_front #define sec second #define sz(x) ((int)(x).size()) #define ALL( c ) (c).begin(), (c).end() #define gcd(a,b) __gcd(a,b) #define mem(x,n) memset(x,n,sizeof(x)) #define endl "\n" using namespace std; template <int POS, class TUPLE> void deploy(std::ostream &os, const TUPLE &tuple){} template <int POS, class TUPLE, class H, class ...Ts> void deploy(std::ostream &os, const TUPLE &t){ os << (POS == 0 ? "" : ", ") << get<POS>(t); deploy<POS + 1, TUPLE, Ts...>(os, t); } template <class T,class U> std::ostream& operator<<(std::ostream &os, std::pair<T,U> &p){ os << "(" << p.first <<", " << p.second <<")";return os; } template <class T> std::ostream& operator<<(std::ostream &os, std::vector<T> &v){ int remain = v.size(); os << "{"; for(auto e: v) os << e << (--remain == 0 ? "}" : ", "); return os; } template <class T> std::ostream& operator<<(std::ostream &os, std::set<T> &v){ int remain = v.size(); os << "{"; for(auto e: v) os << e << (--remain == 0 ? "}" : ", "); return os; } template <class T, class K> std::ostream& operator<<(std::ostream &os, std::map<T, K> &mp){ int remain = mp.size(); os << "{"; for(auto e: mp) os << "(" << e.first << " -> " << e.second << ")" << (--remain == 0 ? "}" : ", "); return os; } #define DEBUG1(var0) { std::cerr << (#var0) << "=" << (var0) << endl; } #define DEBUG2(var0, var1) { std::cerr << (#var0) << "=" << (var0) << ", ";DEBUG1(var1); } #define DEBUG3(var0, var1, var2) { std::cerr << (#var0) << "=" << (var0) << ", ";DEBUG2(var1,var2); } #define DEBUG4(var0, var1, var2, var3) { std::cerr << (#var0) << "=" << (var0) << ", ";DEBUG3(var1,var2,var3); } using ll = long long; //unordered_mapで間に合う? unordered_map <ll,int> myrank; int N; ll nums[110]; int ans[110][11000]; int ans2[110][11000]; int dp_go(int now, int r) { if (now == 0) { return 0; } if (ans[now][r] >= 0) { return ans[now][r]; } int ret = 0; for (int i = now - 1; i >= 0; i--) { if (nums[i] < nums[now]) { auto nr = myrank[nums[now] - nums[i]]; if (nr < r) { ret = max(ret, dp_go(i,nr) + 1); } } } return ans[now][r] = ret; } int dp_go2(int now, int r) { if (now == N) { return 0; } if (ans2[now][r] >= 0) { return ans2[now][r]; } int ret = 0; for (int i = now + 1; i < N; i++) { if (nums[now] > nums[i]) { auto nr = myrank[nums[now] - nums[i]]; if (nr < r) { ret = max(ret,dp_go2(i,nr) + 1); } } } return ans2[now][r] = ret; } int go[110]; int go2[110]; int solve(){ vector <int> diff; rep(i,N){ rep2(j,i+1,N){ diff.pb(abs(nums[j] - nums[i])); } } sort(ALL(diff)); diff.erase(unique(diff.begin(), diff.end()), diff.end()); //DEBUG1(diff); myrank.clear(); rep(i,sz(diff)){ myrank[diff[i]] = i; } mem(ans,-1); mem(ans2,-1); int DIFF_MAX = sz(diff) + 10; rep(i,N){ go[i] = dp_go(i,DIFF_MAX); //DEBUG2(i,go[i]); } rep(i,N){ go2[i] = dp_go2(i,DIFF_MAX); //DEBUG2(i,go2[i]); } int ret = 0; rep(i,N){ ret = max(ret, go[i] + go2[i] + 1); } return ret; } int main() { cin.tie(0); ios_base::sync_with_stdio(0); int T; cin >> T; while(T--){ cin >> N; rep(i,N){ cin >> nums[i]; } cout << solve() << endl; } return 0; }