Submission #285122

#	Time	Username	Problem	Language	Result	Execution time	Memory
285122		3zp	Discharging (NOI20_discharging)	C++14	36 / 100	1091 ms	13816 KiB

Discharging

#include<bits/stdc++.h>
#define ll long long
using namespace std;
ll t[1000009],dp[1000009];
main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int n;
    cin>>n;
    for(int i = 1;i <= n;i++){
        cin >> t[i];
        t[i] = max(t[i], t[i-1]);
    }
    dp[n] = t[n];
    for(int i = n; i >= 1; i--){
        dp[i] = dp[i+1] + (n-i+1) * t[i];
        for(int j = i+1; j <= n; j++){
            dp[i] = min(dp[i], t[j]*(n-i+1) + dp[j+1]);
        }
    }
    cout<<dp[1]<<endl;
}

Compilation message (stderr)

Discharging.cpp:5:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    5 | main(){
      |      ^

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