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답안 #261263

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
261263 2020-08-11T15:37:04 Z Berted Discharging (NOI20_discharging) C++14
100 / 100
 200 ms 30936 KB 
#include <iostream>
#include <deque>
#include <vector>
#define ll long long
#define vi vector<ll>
#define pii pair<ll, ll>
#define fst first
#define snd second
#define vpi vector<pii>

using namespace std;

const long double EPS = 1e-9;

int n;
ll ar[1000001];
vpi dt;
deque<pii> s;

long double xIntercept(pii a, pii b)
{
	return (long double)(b.snd - a.snd) / (a.fst - b.fst);
}

ll eval(ll x, pii l) {return l.fst * x + l.snd;}

int main()
{
	ios :: sync_with_stdio(0); cin.tie(0); cout.tie(0);
	cin >> n;
	int curMax = 0;
	for (int i = 0; i < n; i++)
	{
		cin >> ar[i];
		if (ar[i] > ar[curMax])
		{
			dt.push_back({ar[curMax], i - curMax});
			curMax = i;
		}
	}
	dt.push_back({ar[curMax], n - curMax});
	s.push_back({n, 0});
	int curSZ = 0;
	for (int i = 0; i < dt.size(); i++)
	{
		// cout << dt[i].fst << " " << dt[i].snd << "\n";
		while (s.size() > 1 && eval(dt[i].fst, s[0]) >= eval(dt[i].fst, s[1])) {s.pop_front();}
		curSZ += dt[i].snd;
		pii l = {n - curSZ, eval(dt[i].fst, s[0])};
		while (s.size() > 1 && xIntercept(s.back(), l) - xIntercept(s.back(), s[s.size() - 2]) <= -EPS) {s.pop_back();}
		s.push_back(l);
	}
	cout << s.back().snd << "\n";
	return 0;
}

Compilation message

Discharging.cpp: In function 'int main()':
Discharging.cpp:44:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < dt.size(); i++)
                  ~~^~~~~~~~~~~

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 276 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 396 KB Output is correct

Subtask #2
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 404 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 512 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct

Subtask #3
25.0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 404 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 512 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 141 ms 19588 KB Output is correct
17 Correct 165 ms 21316 KB Output is correct
18 Correct 130 ms 20684 KB Output is correct
19 Correct 165 ms 21084 KB Output is correct
20 Correct 155 ms 21716 KB Output is correct
21 Correct 153 ms 21076 KB Output is correct
22 Correct 150 ms 20156 KB Output is correct
23 Correct 200 ms 30036 KB Output is correct
24 Correct 173 ms 30700 KB Output is correct
25 Correct 167 ms 30936 KB Output is correct
26 Correct 170 ms 29332 KB Output is correct
27 Correct 141 ms 20336 KB Output is correct
28 Correct 154 ms 21604 KB Output is correct
29 Correct 164 ms 30740 KB Output is correct
30 Correct 187 ms 29604 KB Output is correct

Subtask #4
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 165 ms 17784 KB Output is correct
2 Correct 174 ms 17900 KB Output is correct
3 Correct 171 ms 17784 KB Output is correct
4 Correct 170 ms 17784 KB Output is correct
5 Correct 196 ms 17844 KB Output is correct
6 Correct 183 ms 17876 KB Output is correct
7 Correct 158 ms 17864 KB Output is correct
8 Correct 176 ms 17904 KB Output is correct
9 Correct 169 ms 17776 KB Output is correct
10 Correct 169 ms 17864 KB Output is correct

Subtask #5
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 276 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 396 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 1 ms 404 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 1 ms 384 KB Output is correct
25 Correct 1 ms 384 KB Output is correct
26 Correct 1 ms 384 KB Output is correct
27 Correct 1 ms 512 KB Output is correct
28 Correct 1 ms 384 KB Output is correct
29 Correct 1 ms 384 KB Output is correct
30 Correct 1 ms 416 KB Output is correct
31 Correct 1 ms 384 KB Output is correct
32 Correct 1 ms 384 KB Output is correct
33 Correct 1 ms 384 KB Output is correct
34 Correct 1 ms 384 KB Output is correct
35 Correct 1 ms 412 KB Output is correct
36 Correct 1 ms 384 KB Output is correct
37 Correct 1 ms 384 KB Output is correct
38 Correct 1 ms 384 KB Output is correct
39 Correct 1 ms 384 KB Output is correct
40 Correct 1 ms 384 KB Output is correct
41 Correct 1 ms 384 KB Output is correct
42 Correct 1 ms 384 KB Output is correct
43 Correct 1 ms 384 KB Output is correct
44 Correct 1 ms 384 KB Output is correct
45 Correct 1 ms 384 KB Output is correct
46 Correct 1 ms 384 KB Output is correct
47 Correct 1 ms 384 KB Output is correct
48 Correct 1 ms 408 KB Output is correct
49 Correct 1 ms 384 KB Output is correct
50 Correct 1 ms 384 KB Output is correct

Subtask #6
28.0 / 28.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 276 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 396 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 1 ms 404 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 1 ms 384 KB Output is correct
25 Correct 1 ms 384 KB Output is correct
26 Correct 1 ms 384 KB Output is correct
27 Correct 1 ms 512 KB Output is correct
28 Correct 1 ms 384 KB Output is correct
29 Correct 1 ms 384 KB Output is correct
30 Correct 141 ms 19588 KB Output is correct
31 Correct 165 ms 21316 KB Output is correct
32 Correct 130 ms 20684 KB Output is correct
33 Correct 165 ms 21084 KB Output is correct
34 Correct 155 ms 21716 KB Output is correct
35 Correct 153 ms 21076 KB Output is correct
36 Correct 150 ms 20156 KB Output is correct
37 Correct 200 ms 30036 KB Output is correct
38 Correct 173 ms 30700 KB Output is correct
39 Correct 167 ms 30936 KB Output is correct
40 Correct 170 ms 29332 KB Output is correct
41 Correct 141 ms 20336 KB Output is correct
42 Correct 154 ms 21604 KB Output is correct
43 Correct 164 ms 30740 KB Output is correct
44 Correct 187 ms 29604 KB Output is correct
45 Correct 165 ms 17784 KB Output is correct
46 Correct 174 ms 17900 KB Output is correct
47 Correct 171 ms 17784 KB Output is correct
48 Correct 170 ms 17784 KB Output is correct
49 Correct 196 ms 17844 KB Output is correct
50 Correct 183 ms 17876 KB Output is correct
51 Correct 158 ms 17864 KB Output is correct
52 Correct 176 ms 17904 KB Output is correct
53 Correct 169 ms 17776 KB Output is correct
54 Correct 169 ms 17864 KB Output is correct
55 Correct 1 ms 416 KB Output is correct
56 Correct 1 ms 384 KB Output is correct
57 Correct 1 ms 384 KB Output is correct
58 Correct 1 ms 384 KB Output is correct
59 Correct 1 ms 384 KB Output is correct
60 Correct 1 ms 412 KB Output is correct
61 Correct 1 ms 384 KB Output is correct
62 Correct 1 ms 384 KB Output is correct
63 Correct 1 ms 384 KB Output is correct
64 Correct 1 ms 384 KB Output is correct
65 Correct 1 ms 384 KB Output is correct
66 Correct 1 ms 384 KB Output is correct
67 Correct 1 ms 384 KB Output is correct
68 Correct 1 ms 384 KB Output is correct
69 Correct 1 ms 384 KB Output is correct
70 Correct 1 ms 384 KB Output is correct
71 Correct 1 ms 384 KB Output is correct
72 Correct 1 ms 384 KB Output is correct
73 Correct 1 ms 408 KB Output is correct
74 Correct 1 ms 384 KB Output is correct
75 Correct 1 ms 384 KB Output is correct
76 Correct 133 ms 14156 KB Output is correct
77 Correct 125 ms 14232 KB Output is correct
78 Correct 127 ms 13556 KB Output is correct
79 Correct 122 ms 13816 KB Output is correct
80 Correct 126 ms 14460 KB Output is correct
81 Correct 136 ms 13720 KB Output is correct
82 Correct 139 ms 13816 KB Output is correct
83 Correct 123 ms 14236 KB Output is correct
84 Correct 127 ms 13940 KB Output is correct
85 Correct 136 ms 14296 KB Output is correct
86 Correct 122 ms 13688 KB Output is correct
87 Correct 118 ms 13536 KB Output is correct
88 Correct 127 ms 13896 KB Output is correct
89 Correct 128 ms 13688 KB Output is correct
90 Correct 125 ms 13692 KB Output is correct
91 Correct 125 ms 13432 KB Output is correct
92 Correct 174 ms 23048 KB Output is correct
93 Correct 159 ms 21352 KB Output is correct
94 Correct 133 ms 13168 KB Output is correct
95 Correct 151 ms 14584 KB Output is correct
96 Correct 132 ms 13456 KB Output is correct
97 Correct 129 ms 13788 KB Output is correct
98 Correct 131 ms 13984 KB Output is correct
99 Correct 193 ms 13612 KB Output is correct
100 Correct 142 ms 13724 KB Output is correct