Submission #747501

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
747501	2023-05-24 08:32:49	Toxtaq	Discharging (NOI20_discharging)	C++17	36 / 100	406 ms	1048576 KiB

Discharging

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#include<bits/stdc++.h>
using namespace std;
int n;
vector<int>v;
vector<vector<int>>max_table;
vector<long long>table;
long long rec(int indx){
    long long res = 1e18;
    if(indx == n + 1)return 0;
    if(table[indx] != -1)return table[indx];
    for(int i = indx;i <= n;++i){
        res = min(res, (long long)(n - indx + 1) * max_table[indx][i] + rec(i + 1));
    }
    return table[indx] = res;
}
int main()
{
    cin >> n;
    v.resize(n + 1);
    table.assign(n + 1, -1);
    max_table.assign(n + 1, vector<int>(n + 1));
    for(int i = 1;i <= n;++i)cin >> v[i];
    for(int i = 1;i <= n;++i){
        int mx = -1e9;
        for(int j = i;j <= n;++j){
            mx = max(mx, v[j]);
            max_table[i][j] = mx;
        }
    }
    cout << rec(1);
 
 
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• Subtask 1: 9 / 9
• Subtask 2: 13 / 13
• Subtask 3: 0 / 25
• Subtask 4: 0 / 11
• Subtask 5: 14 / 14
• Subtask 6: 0 / 28