Submission #939776

#	Time	Username	Problem	Language	Result	Execution time	Memory
939776		Litusiano	Discharging (NOI20_discharging)	C++17	11 / 100	86 ms	17988 KiB

Discharging

#include<bits/stdc++.h>
using namespace std;
#define int long long

signed main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	int n; cin>>n;
	vector<int> v(n); for(int& i : v) cin>>i;
	int s = v[0];
	int last = 0;
	int mx = v[0];
	for(int i = 1; i<n; i++){
		if(v[i] <= mx){
			s += mx;
		}
		else{
			int tmp = (i-last) * (v[i]-mx) + v[i]; // keep segment
			int tmp1 = (n-i-1)*mx + v[i];
			mx = v[i];
			// cerr<<tmp<<" "<<tmp1<<" "<<last<<endl;
			if(tmp <= tmp1){
				s+=tmp;
			}
			else{
				s+=tmp1; last = i;
			}
		}
	}
	cout<<s<<endl;
}

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