oj.uz

답안 #697968

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
697968 2023-02-11T15:48:41 Z bazzagazza Feast (NOI19_feast) C++17
30 / 100
 134 ms 7952 KB 
//fofat-x 
#include <bits/stdc++.h>
using namespace std;
#define int long long int

vector <int> b;
int sgn(int x){
	if(x<0) return -1;
	return 1;
}

int kadane(int l, int r){
	int best=0;
	int sum=0;
	for(int i=l; i<=r; i++){
		sum=max(b[i], sum+b[i]);
		best=max(best, sum);
	}
	return best;
}

int32_t main(){
	int n,k;
	cin >> n >> k;
	deque <int> a;
	for(int i=0; i<n; i++){
		int dummy;
		cin >> dummy;
		a.push_back(dummy);
	}
	while(a.front()<=0) a.pop_front();
	if(a.empty()){cout << 0 << endl; return 0;}
	while(a.back()<=0) a.pop_back();
	int sign=1;
	int s=0;
	for(int i=0; i<(int)a.size(); i++){
		if(sgn(a[i])==sign) s+=a[i];
		else{sign=-sign; b.push_back(s); s=a[i];}
	}
	b.push_back(s);
	
	//for(auto x:b) cout << x << " ";
	//cout << endl;
	
	deque <pair <int, int> > negatives;
	for(int i=0; i<(int)b.size(); i++){
		if(sgn(b[i])<0) negatives.push_back({b[i], i});
	}
	sort(negatives.begin(), negatives.end());
	map <int, int> segments;
	segments.insert({0, (int)b.size()-1});
	
	//for(auto x:negatives) cout << x.first << " " << x.second << endl;
	
	k=min(k, (int)b.size()-(int)negatives.size());
	while((int)segments.size()!=k){
		
		//for(auto u:segments) cout << u.first << " " << u.second << endl;
		//cout << endl;
		
		auto ind=segments.upper_bound(negatives.front().second);
		--ind;
		int f=(*ind).first;
		int s=(*ind).second;
		segments.erase(ind);
		segments.insert({f, negatives.front().second-1});
		segments.insert({negatives.front().second+1, s});
		negatives.pop_front();
	}
	int res=0;
	for(auto p:segments){
		
		//cout << p.first << " " << p.second << endl;
		
		res+=kadane(p.first, p.second);
	}
	cout << res << endl;
}

Subtask #1
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 100 ms 2636 KB Output is correct
2 Correct 109 ms 5480 KB Output is correct
3 Correct 110 ms 5528 KB Output is correct
4 Correct 105 ms 5504 KB Output is correct
5 Correct 103 ms 5440 KB Output is correct
6 Correct 106 ms 5456 KB Output is correct
7 Correct 102 ms 5452 KB Output is correct
8 Correct 106 ms 5456 KB Output is correct
9 Correct 103 ms 5376 KB Output is correct
10 Correct 102 ms 5472 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 54 ms 2596 KB Output is correct
2 Correct 56 ms 2652 KB Output is correct
3 Correct 56 ms 2640 KB Output is correct
4 Correct 56 ms 2700 KB Output is correct
5 Correct 103 ms 2628 KB Output is correct
6 Correct 55 ms 3768 KB Output is correct
7 Correct 57 ms 3828 KB Output is correct
8 Correct 126 ms 5468 KB Output is correct
9 Correct 103 ms 5436 KB Output is correct
10 Correct 57 ms 3828 KB Output is correct

Subtask #3
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 123 ms 5060 KB Output is correct
2 Correct 124 ms 7868 KB Output is correct
3 Correct 123 ms 7900 KB Output is correct
4 Correct 123 ms 7952 KB Output is correct
5 Correct 122 ms 7884 KB Output is correct
6 Correct 123 ms 7852 KB Output is correct
7 Correct 133 ms 7840 KB Output is correct
8 Correct 121 ms 7908 KB Output is correct
9 Correct 134 ms 7860 KB Output is correct
10 Correct 122 ms 7856 KB Output is correct

Subtask #4
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Incorrect 1 ms 212 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Incorrect 1 ms 212 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Incorrect 1 ms 212 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #7
0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 100 ms 2636 KB Output is correct
2 Correct 109 ms 5480 KB Output is correct
3 Correct 110 ms 5528 KB Output is correct
4 Correct 105 ms 5504 KB Output is correct
5 Correct 103 ms 5440 KB Output is correct
6 Correct 106 ms 5456 KB Output is correct
7 Correct 102 ms 5452 KB Output is correct
8 Correct 106 ms 5456 KB Output is correct
9 Correct 103 ms 5376 KB Output is correct
10 Correct 102 ms 5472 KB Output is correct
11 Correct 54 ms 2596 KB Output is correct
12 Correct 56 ms 2652 KB Output is correct
13 Correct 56 ms 2640 KB Output is correct
14 Correct 56 ms 2700 KB Output is correct
15 Correct 103 ms 2628 KB Output is correct
16 Correct 55 ms 3768 KB Output is correct
17 Correct 57 ms 3828 KB Output is correct
18 Correct 126 ms 5468 KB Output is correct
19 Correct 103 ms 5436 KB Output is correct
20 Correct 57 ms 3828 KB Output is correct
21 Correct 123 ms 5060 KB Output is correct
22 Correct 124 ms 7868 KB Output is correct
23 Correct 123 ms 7900 KB Output is correct
24 Correct 123 ms 7952 KB Output is correct
25 Correct 122 ms 7884 KB Output is correct
26 Correct 123 ms 7852 KB Output is correct
27 Correct 133 ms 7840 KB Output is correct
28 Correct 121 ms 7908 KB Output is correct
29 Correct 134 ms 7860 KB Output is correct
30 Correct 122 ms 7856 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Incorrect 1 ms 212 KB Output isn't correct
34 Halted 0 ms 0 KB -