結果
問題 | No.209 Longest Mountain Subsequence |
ユーザー | heno239 |
提出日時 | 2020-08-15 12:44:53 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 45 ms / 2,000 ms |
コード長 | 3,205 bytes |
コンパイル時間 | 1,056 ms |
コンパイル使用メモリ | 115,432 KB |
実行使用メモリ | 5,248 KB |
最終ジャッジ日時 | 2024-10-10 17:40:02 |
合計ジャッジ時間 | 1,891 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
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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 | 17 ms
5,248 KB |
testcase_01 | AC | 15 ms
5,248 KB |
testcase_02 | AC | 14 ms
5,248 KB |
testcase_03 | AC | 45 ms
5,248 KB |
testcase_04 | AC | 45 ms
5,248 KB |
testcase_05 | AC | 7 ms
5,248 KB |
ソースコード
#include<iostream> #include<string> #include<cstdio> #include<vector> #include<cmath> #include<algorithm> #include<functional> #include<iomanip> #include<queue> #include<ciso646> #include<random> #include<map> #include<set> #include<bitset> #include<stack> #include<unordered_map> #include<utility> #include<cassert> #include<complex> #include<numeric> using namespace std; //#define int long long typedef long long ll; typedef unsigned long long ul; typedef unsigned int ui; constexpr ll mod =998244353; const ll INF = mod * mod; typedef pair<int, int>P; #define stop char nyaa;cin>>nyaa; #define rep(i,n) for(int i=0;i<n;i++) #define per(i,n) for(int i=n-1;i>=0;i--) #define Rep(i,sta,n) for(int i=sta;i<n;i++) #define rep1(i,n) for(int i=1;i<=n;i++) #define per1(i,n) for(int i=n;i>=1;i--) #define Rep1(i,sta,n) for(int i=sta;i<=n;i++) #define all(v) (v).begin(),(v).end() typedef pair<ll, ll> LP; typedef double ld; typedef pair<ld, ld> LDP; const ld eps = 1e-12; const ld pi = acos(-1.0); ll mod_pow(ll x, ll n, ll m = mod) { ll res = 1; while (n) { if (n & 1)res = res * x % m; x = x * x % m; n >>= 1; } return res; } struct modint { ll n; modint() :n(0) { ; } modint(ll m) :n(m) { if (n >= mod)n %= mod; else if (n < 0)n = (n % mod + mod) % mod; } operator int() { return n; } }; bool operator==(modint a, modint b) { return a.n == b.n; } modint operator+=(modint& a, modint b) { a.n += b.n; if (a.n >= mod)a.n -= mod; return a; } modint operator-=(modint& a, modint b) { a.n -= b.n; if (a.n < 0)a.n += mod; return a; } modint operator*=(modint& a, modint b) { a.n = ((ll)a.n * b.n) % mod; return a; } modint operator+(modint a, modint b) { return a += b; } modint operator-(modint a, modint b) { return a -= b; } modint operator*(modint a, modint b) { return a *= b; } modint operator^(modint a, ll n) { if (n == 0)return modint(1); modint res = (a * a) ^ (n / 2); if (n % 2)res = res * a; return res; } ll inv(ll a, ll p) { return (a == 1 ? 1 : (1 - p * inv(p % a, a)) / a + p); } modint operator/(modint a, modint b) { return a * modint(inv(b, mod)); } ll gcd(ll a, ll b) { if (a < b)swap(a, b); while (b) { ll r = a % b; a = b; b = r; } return a; } int dp[100][100]; void solve() { int n; cin >> n; rep(i, n)rep(j, n)dp[i][j] = 0; vector<int> a(n); rep(i, n)cin >> a[i]; rep(i, n)dp[i][i] = 1; rep(i, n) { for (int j = 0; j < i; j++) { if (a[j] >= a[i])continue; for (int k = 0; k <= j; k++) { if (a[i] - a[j] > a[j] - a[k]) { dp[i][j] = max(dp[i][j], dp[j][k] + 1); } } } } per(i, n) { for (int j = n - 1; j > i; j--) { if (a[i] <= a[j])continue; for (int k = n - 1; k >= j; k--) { if (a[i] - a[j] > a[j] - a[k]) { dp[i][j] = max(dp[i][j], dp[j][k] + 1); } } } } int ans = 0; rep(i, n) { int le = 0; rep(j, i + 1)le = max(le, dp[i][j]); int ri = 0; Rep(j, i, n)ri = max(ri, dp[i][j]); ans = max(ans, le + ri - 1); //cout << "? " << i << " " << le << " " << ri << "\n"; } cout << ans << "\n"; } signed main() { ios::sync_with_stdio(false); cin.tie(0); //cout << fixed << setprecision(10); //init_f(); //init(); //expr(); int t; cin >> t; rep(i, t) solve(); return 0; }