oj.uz

Submission #492704

# Submission time Handle Problem Language Result Execution time Memory
492704 2021-12-08T13:04:29 Z zhougz Discharging (NOI20_discharging) C++17
100 / 100
 138 ms 13928 KB 
/**
 *    author: chowgz
 *    created: 14/03/2021 11:20:55
**/
#include <bits/stdc++.h>

using namespace std;

constexpr int MAXN = (int)1e6;

struct Line {
	int m;
	long long c;
	long long operator()(int x) {
		return (long long)m * x + c;
	}
	double operator^(const Line &rhs) {
		return ((double)c - rhs.c) / ((double)rhs.m - m);
	}
};

struct ConvexHull {
	Line lines[MAXN + 1];
	int l = 0, r = 0;
	void operator+=(Line line) {
		while (r - l >= 2 && (line ^ lines[r - 1]) <= (lines[r - 1] ^ lines[r - 2])) {
			r--;
		}
		lines[r] = line;
		r++;
	}
	long long operator()(int x) {
		while (r - l >= 2 && lines[l](x) >= lines[l + 1](x)) {
			l++;
		}
		return lines[l](x);
	}
} hull;

// For more comments, check original cpp file!
int main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	int n;
	cin >> n;
	int arr[n];
	for (int i = 0; i < n; i++) {
		cin >> arr[i];
	}
	long long dp;
	int maxx = 0;
	hull += Line{0, 0};
	for (int i = 1; i <= n; i++) {
		if (arr[i - 1] > maxx) {
			maxx = arr[i - 1];
			dp = n * (long long)maxx + hull(maxx);
		}
		hull += Line{-i, dp};
	}
	cout << dp << '\n';
	return 0;
}

Compilation message

Discharging.cpp: In function 'int main()':
Discharging.cpp:18:11: warning: 'dp' may be used uninitialized in this function [-Wmaybe-uninitialized]
   18 |   return ((double)c - rhs.c) / ((double)rhs.m - m);
      |           ^~~~~~~~~
Discharging.cpp:50:12: note: 'dp' was declared here
   50 |  long long dp;
      |            ^~

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 316 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 0 ms 204 KB Output is correct
13 Correct 0 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct

Subtask #2
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 328 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 328 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 0 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 0 ms 332 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 328 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 328 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 0 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 0 ms 332 KB Output is correct
16 Correct 105 ms 9192 KB Output is correct
17 Correct 93 ms 9956 KB Output is correct
18 Correct 71 ms 8516 KB Output is correct
19 Correct 84 ms 9960 KB Output is correct
20 Correct 82 ms 9828 KB Output is correct
21 Correct 83 ms 9972 KB Output is correct
22 Correct 87 ms 9540 KB Output is correct
23 Correct 92 ms 10624 KB Output is correct
24 Correct 84 ms 10092 KB Output is correct
25 Correct 92 ms 10476 KB Output is correct
26 Correct 92 ms 10732 KB Output is correct
27 Correct 97 ms 9196 KB Output is correct
28 Correct 103 ms 10096 KB Output is correct
29 Correct 97 ms 10232 KB Output is correct
30 Correct 98 ms 10488 KB Output is correct

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 109 ms 13804 KB Output is correct
2 Correct 104 ms 13892 KB Output is correct
3 Correct 102 ms 13928 KB Output is correct
4 Correct 106 ms 13924 KB Output is correct
5 Correct 138 ms 13892 KB Output is correct
6 Correct 107 ms 13800 KB Output is correct
7 Correct 97 ms 13804 KB Output is correct
8 Correct 98 ms 13808 KB Output is correct
9 Correct 107 ms 13800 KB Output is correct
10 Correct 119 ms 13800 KB Output is correct

Subtask #5
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 316 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 0 ms 204 KB Output is correct
13 Correct 0 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 328 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 328 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 0 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 0 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 1 ms 204 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 0 ms 332 KB Output is correct
30 Correct 1 ms 204 KB Output is correct
31 Correct 1 ms 324 KB Output is correct
32 Correct 0 ms 204 KB Output is correct
33 Correct 1 ms 204 KB Output is correct
34 Correct 1 ms 204 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 1 ms 332 KB Output is correct
37 Correct 0 ms 204 KB Output is correct
38 Correct 1 ms 204 KB Output is correct
39 Correct 1 ms 204 KB Output is correct
40 Correct 1 ms 332 KB Output is correct
41 Correct 1 ms 332 KB Output is correct
42 Correct 1 ms 332 KB Output is correct
43 Correct 1 ms 204 KB Output is correct
44 Correct 1 ms 204 KB Output is correct
45 Correct 1 ms 204 KB Output is correct
46 Correct 1 ms 384 KB Output is correct
47 Correct 0 ms 204 KB Output is correct
48 Correct 1 ms 332 KB Output is correct
49 Correct 1 ms 332 KB Output is correct
50 Correct 1 ms 332 KB Output is correct

Subtask #6
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 316 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 0 ms 204 KB Output is correct
13 Correct 0 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 328 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 328 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 0 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 0 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 1 ms 204 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 0 ms 332 KB Output is correct
30 Correct 105 ms 9192 KB Output is correct
31 Correct 93 ms 9956 KB Output is correct
32 Correct 71 ms 8516 KB Output is correct
33 Correct 84 ms 9960 KB Output is correct
34 Correct 82 ms 9828 KB Output is correct
35 Correct 83 ms 9972 KB Output is correct
36 Correct 87 ms 9540 KB Output is correct
37 Correct 92 ms 10624 KB Output is correct
38 Correct 84 ms 10092 KB Output is correct
39 Correct 92 ms 10476 KB Output is correct
40 Correct 92 ms 10732 KB Output is correct
41 Correct 97 ms 9196 KB Output is correct
42 Correct 103 ms 10096 KB Output is correct
43 Correct 97 ms 10232 KB Output is correct
44 Correct 98 ms 10488 KB Output is correct
45 Correct 109 ms 13804 KB Output is correct
46 Correct 104 ms 13892 KB Output is correct
47 Correct 102 ms 13928 KB Output is correct
48 Correct 106 ms 13924 KB Output is correct
49 Correct 138 ms 13892 KB Output is correct
50 Correct 107 ms 13800 KB Output is correct
51 Correct 97 ms 13804 KB Output is correct
52 Correct 98 ms 13808 KB Output is correct
53 Correct 107 ms 13800 KB Output is correct
54 Correct 119 ms 13800 KB Output is correct
55 Correct 1 ms 204 KB Output is correct
56 Correct 1 ms 324 KB Output is correct
57 Correct 0 ms 204 KB Output is correct
58 Correct 1 ms 204 KB Output is correct
59 Correct 1 ms 204 KB Output is correct
60 Correct 1 ms 332 KB Output is correct
61 Correct 1 ms 332 KB Output is correct
62 Correct 0 ms 204 KB Output is correct
63 Correct 1 ms 204 KB Output is correct
64 Correct 1 ms 204 KB Output is correct
65 Correct 1 ms 332 KB Output is correct
66 Correct 1 ms 332 KB Output is correct
67 Correct 1 ms 332 KB Output is correct
68 Correct 1 ms 204 KB Output is correct
69 Correct 1 ms 204 KB Output is correct
70 Correct 1 ms 204 KB Output is correct
71 Correct 1 ms 384 KB Output is correct
72 Correct 0 ms 204 KB Output is correct
73 Correct 1 ms 332 KB Output is correct
74 Correct 1 ms 332 KB Output is correct
75 Correct 1 ms 332 KB Output is correct
76 Correct 84 ms 10224 KB Output is correct
77 Correct 87 ms 10160 KB Output is correct
78 Correct 89 ms 9800 KB Output is correct
79 Correct 85 ms 9960 KB Output is correct
80 Correct 86 ms 10484 KB Output is correct
81 Correct 79 ms 9704 KB Output is correct
82 Correct 77 ms 9704 KB Output is correct
83 Correct 83 ms 10084 KB Output is correct
84 Correct 100 ms 9924 KB Output is correct
85 Correct 87 ms 10180 KB Output is correct
86 Correct 83 ms 9576 KB Output is correct
87 Correct 79 ms 9464 KB Output is correct
88 Correct 82 ms 9940 KB Output is correct
89 Correct 98 ms 9704 KB Output is correct
90 Correct 96 ms 9584 KB Output is correct
91 Correct 78 ms 9412 KB Output is correct
92 Correct 88 ms 10728 KB Output is correct
93 Correct 88 ms 9956 KB Output is correct
94 Correct 98 ms 9068 KB Output is correct
95 Correct 99 ms 10476 KB Output is correct
96 Correct 78 ms 9464 KB Output is correct
97 Correct 80 ms 9716 KB Output is correct
98 Correct 81 ms 9960 KB Output is correct
99 Correct 88 ms 9672 KB Output is correct
100 Correct 90 ms 9832 KB Output is correct