Submission #1043264

#TimeUsernameProblemLanguageResultExecution timeMemory
1043264WhisperDischarging (NOI20_discharging)C++17
36 / 100
1079 ms25680 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; } #define MAX 1000005 int nArr; int dp[MAX], A[MAX]; void process(void){ cin >> nArr; for (int i = 1; i <= nArr; ++i) cin >> A[i]; memset(dp, 0x3f, sizeof dp); dp[0] = 0; FOR(i, 1, nArr){ int val = 0; for (int j = i; j >= 1; --j){ maximize(val, A[j]); minimize(dp[i], dp[j - 1] + val * (nArr - j + 1)); } } cout << dp[nArr]; } 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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