Submission #320745

#	Time	Username	Problem	Language	Result	Execution time	Memory
320745		Everule	Discharging (NOI20_discharging)	C++14	36 / 100	1076 ms	17124 KiB

Discharging

#include <bits/stdc++.h>
#define mp make_pair
#define pb push_back
using namespace std;
using ll = long long int;
template<typename T>
ostream& operator+(ostream& out, const vector<T> &vec){
    for(const auto &x : vec){
        out<<x<<" ";
    }
    out<<"\n";
    return out;
}
template<typename T>
ostream& operator*(ostream& out, const vector<T> &vec){
    for(const auto &x : vec){
        out+x;
    }
    return out;
}
template<typename T>
istream& operator>>(istream& in, vector<T> &vec){
    for(auto &x : vec){
        in>>x;
    }
    return in;
}
const ll INFLL = 1e18;
void solve(){
    int n;
    cin>>n;
    vector<int> seq(n);
    cin>>seq;
    vector<ll> dp(n + 1, INFLL);
    dp[n] = 0;
    for(int i=n-1;i>=0;--i){
        ll currmx = 0;
        for(int j=i;j<n;j++){
            currmx = max(currmx, ll(seq[j]));
            dp[i] = min(dp[i], currmx*(n-i) + dp[j+1]);
        }
    }
    cout<<dp[0]<<"\n";
}
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    solve();
}

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