Submission #870857

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
870857	2023-11-09T10:09:53 Z	pcc	Discharging (NOI20_discharging)	C++14	20 / 100	79 ms	500 KB

Discharging

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

#define ll long long
#define pll pair<ll,ll>
#define pii pair<int,int>
#define fs first
#define sc second
#define tlll tuple<ll,ll,ll>


vector<pll> v;
vector<pll> st;
int n;
ll total = 0;
ll sum = 0;

inline bool check(pll a,pll b){
	ll ta = a.fs*(sum-b.sc)+b.fs*sum;
	ll tb = a.fs*sum;
	if(ta>tb)return true;
	else return false;
}

int main(){
	ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	cin>>n;
	for(int i = 0;i<n;i++){
		int k;
		cin>>k;
		if(v.empty()||v.back().fs < k)v.push_back({k,1});
		else v.back().sc++;
	}
	reverse(v.begin(),v.end());
	for(auto &i:v){
		sum += i.sc;
		while(!st.empty()&&check(st.back(),i)){
			total -= st.back().fs*(sum-i.sc);
			i.sc += st.back().sc;
			i.fs = st.back().fs;
			st.pop_back();
		}
		total += sum*i.fs;
		st.push_back(i);
	}
	//for(auto &i:st)cout<<i.fs<<' '<<i.sc<<endl;
	cout<<total;
}

Subtask #1

9.0 / 9.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	0 ms	344 KB	Output is correct
13	Correct	1 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct

Subtask #2

0 / 13.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	0 ms	344 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #3

0 / 25.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	0 ms	344 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #4

11.0 / 11.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	70 ms	428 KB	Output is correct
2	Correct	79 ms	344 KB	Output is correct
3	Correct	75 ms	432 KB	Output is correct
4	Correct	71 ms	348 KB	Output is correct
5	Correct	70 ms	344 KB	Output is correct
6	Correct	70 ms	344 KB	Output is correct
7	Correct	69 ms	348 KB	Output is correct
8	Correct	70 ms	432 KB	Output is correct
9	Correct	71 ms	348 KB	Output is correct
10	Correct	69 ms	500 KB	Output is correct

Subtask #5

0 / 14.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	0 ms	344 KB	Output is correct
13	Correct	1 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Incorrect	0 ms	344 KB	Output isn't correct
16	Halted	0 ms	0 KB	-

Subtask #6

0 / 28.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	0 ms	344 KB	Output is correct
13	Correct	1 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Incorrect	0 ms	344 KB	Output isn't correct
16	Halted	0 ms	0 KB	-