結果
問題 | No.921 ずんだアロー |
ユーザー | haruki_K |
提出日時 | 2019-11-08 21:35:57 |
言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 12 ms / 2,000 ms |
コード長 | 3,281 bytes |
コンパイル時間 | 1,585 ms |
コンパイル使用メモリ | 169,772 KB |
実行使用メモリ | 5,632 KB |
最終ジャッジ日時 | 2024-09-15 01:16:08 |
合計ジャッジ時間 | 2,619 ms |
ジャッジサーバーID (参考情報) |
judge6 / judge5 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 22 |
ソースコード
#include <bits/stdc++.h> using namespace std; #define rep(i,n) for (int i = 0; i < int(n); i++) #define rep1(i,n) for (int i = 1; i <= int(n); i++) #define repR(i,n) for (int i = int(n)-1; i >= 0; i--) #define rep1R(i,n) for (int i = int(n); i >= 1; i--) #define loop(i,a,B) for (int i = a; i B; i++) #define loopR(i,a,B) for (int i = a; i B; i--) #define all(x) (x).begin(), (x).end() #define allR(x) (x).rbegin(), (x).rend() #define eb emplace_back #define mp make_pair #define fst first #define snd second #ifdef LOCAL #define dump(...) cerr << "[" << __LINE__ << ":" << __FUNCTION__ << "] ", my_dmp(#__VA_ARGS__, __VA_ARGS__) #define say(x) cerr << "[" << __LINE__ << ":" << __FUNCTION__ << "] " << x << endl; void my_dmp(const char*) { cerr << endl; } template <class T, class... U> void my_dmp(const char *s, T const& x, U const& ...y) { const char *o = "({[", *e = "]})"; for (int i = 0; *s != '\0'; cerr << *s++) { if (count(o,o+3,*s)) i++; if (count(e,e+3,*s)) i--; if (!i && *s == ',') break; } cerr << " = " << x; if (*s == ',') cerr << ", ", s++; my_dmp(s, y...); } #else #define dump(...) #define say(x) #endif using ll = long long; using ld = long double; #define int ll #define double ld template <class T> using pque_max = priority_queue<T>; template <class T> using pque_min = priority_queue<T, vector<T>, greater<T> >; template <class T, class = typename T::iterator, class = typename enable_if<!is_same<T, string>::value>::type> ostream& operator<<(ostream& os, T const& v) { os << "{"; for (auto const& x : v) os << " " << x; return os << " }"; } template <class T> istream& operator>>(istream& is, vector<T>& v) { for (auto& x : v) is >> x; return is; } template <class T, class S> ostream& operator<<(ostream& os, pair<T,S> const& p) { return os << "(" << p.first << ", " << p.second << ")"; } template <class T, class S> istream& operator>>(istream& is, pair<T,S>& p) { return is >> p.first >> p.second; } struct my_Init { my_Init() { cin.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(15); } } my_init; template <class T, size_t d, class = typename enable_if<(d == 0)>::type> constexpr auto make_v(T const& x = {}) { return x; } template <class T, size_t d, class... U, class = typename enable_if<(d > 0)>::type> constexpr auto make_v(size_t n, U... x) { auto val = make_v<T,d-1>(x...); return vector<decltype(val)>(n, move(val)); } template <class T> void quit(T const& x) { cout << x << endl; exit(0); } template <class T> constexpr bool chmin(T& x, T const& y) { if (x > y) { x = y; return true; } return false; } template <class T> constexpr bool chmax(T& x, T const& y) { if (x < y) { x = y; return true; } return false; } template <class It> constexpr auto sumof(It b, It e) { return accumulate(b,e,typename iterator_traits<It>::value_type{}); } const ll INF = (1LL<<62)-1; // ~ 4.6e18 //////////////////////////////// int32_t main() { int n; cin >> n; vector<int> a(n); cin >> a; vector<int> dp0(n),dp1(n); dp0[0] = 0; dp1[0] = 1; loop (i,1,<n) { dp0[i] = max(dp0[i-1],dp1[i-1]); if (a[i] == a[i-1]) { dp1[i] = dp0[i]+1; } else { dp1[i] = dp0[i-1]+1; } } cout << max(dp1[n-1],dp0[n-1]) << endl; // dump(dp0); dump(dp1); }