Submission #1046059

#TimeUsernameProblemLanguageResultExecution timeMemory
1046059WhisperFinancial Report (JOI21_financial)C++17
48 / 100
57 ms2652 KiB
#include <bits/stdc++.h> using namespace std; using ll = long long; #define int long long #define FOR(i, a, b) for (int i = (a); i <= (b); i++) #define FORD(i, a, b) for (int i = (b); i >= (a); i --) #define REP(i, a) for (int i = 0; i < (a); ++i) #define REPD(i, a) for (int i = (a) - 1; i >= 0; --i) #define MASK(i) (1LL << (i)) #define BIT(x, i) (((x) >> (i)) & 1) constexpr ll LINF = (1ll << 60); constexpr int INF = (1ll << 30); constexpr int Mod = 1e9 + 7; mt19937 rng(chrono::steady_clock::now().time_since_epoch().count()); /* Phu Trong from Nguyen Tat Thanh High School for gifted student */ template <class X, class Y> bool minimize(X &x, const Y &y){ X eps = 1e-9; if (x > y + eps) {x = y; return 1;} return 0; } template <class X, class Y> bool maximize(X &x, const Y &y){ X eps = 1e-9; if (x + eps < y) {x = y; return 1;} return 0; } int nArr, maxDist; #define MAX 300005 int A[MAX]; namespace SUBTASK_3{ bool check(void){ return (nArr <= 7000); } int dp[7777]; void main(void){ for (int i = 1; i <= nArr; ++i) dp[i] = 1; int ans = 0; for (int i = 1; i <= nArr; ++i){ int cnt = 0, max_value = 0; bool ok = 1; for (int j = i - 1; j >= 1; --j){ maximize(max_value, A[j]); if(A[j] >= A[i]) ++cnt; else cnt = 0; if(cnt >= maxDist) ok = 0; if(i - j <= maxDist){ if(A[i] > A[j]) maximize(dp[i], dp[j] + 1); } else if(ok) { if(A[i] > A[j]) maximize(dp[i], dp[j] + 1); } } maximize(ans, dp[i]); // cout << dp[i] << " "; } cout << ans; } } void process(void){ cin >> nArr >> maxDist; for (int i = 1; i <= nArr; ++i) cin >> A[i]; if(SUBTASK_3 :: check()) SUBTASK_3 :: main(); } signed main(){ #define name "Whisper" cin.tie(nullptr) -> sync_with_stdio(false); //freopen(name".inp", "r", stdin); //freopen(name".out", "w", stdout); process(); return (0 ^ 0); }
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