Submission #1288958

#	Time	Username	Problem	Language	Result	Execution time	Memory
1288958		ofoz	Discharging (NOI20_discharging)	C++20	36 / 100	1096 ms	15960 KiB

Discharging

#include <bits/stdc++.h>
#pragma GCC optimize("O2")
using namespace std;
#define int long long
#define ll long long
#define vc vector<char>
#define vi vector<int>
#define vb vector<bool>
#define pi pair<int, int>
#define ppi pair<pair<int, int>, int>
#define pip pair<int, pair<int, int>>
#define multi multiset<int>
#define multp multiset<pi>
#define endl '\n'
mt19937 rng(chrono::system_clock::now().time_since_epoch().count());
const int MOD = 1e9 + 7;
const int MAXN = 1e6+5;
const int S = 350;


void solve() {
    int n;
    cin >> n;
    vi a(n+1);
    for (int i = 1; i <= n; i++) cin >> a[i];
    vi dp(n+1, INT64_MAX);
    dp[0] = 0;
    for (int i = 1; i <= n; i++) {
        int mx = a[i];
        for (int j = i-1; j >= 0; j--) {
            dp[i] = min(dp[i], dp[j] + (n - j) * mx);
            
            if (j != 0) { mx = max(mx, a[j]); }
        }
    }

    cout << dp[n] << endl;
}
 
/*

*/
 
signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr); cout.tie(nullptr);
    
    bool test = 0;
    int t;
    if (!test) t = 1;
    else cin >> t;
    while (t--) {
        solve();
    }
    return 0;
}

• Subtask 1: 9 / 9
• Subtask 2: 13 / 13
• Subtask 3: 0 / 25
• Subtask 4: 0 / 11
• Subtask 5: 14 / 14
• Subtask 6: 0 / 28