oj.uz

Submission #173558

# Submission time Handle Problem Language Result Execution time Memory
173558 2020-01-04T16:04:13 Z Just_Solve_The_Problem Bigger segments (IZhO19_segments) C++11
100 / 100
 146 ms 10372 KB 
#include <bits/stdc++.h>

#define ll long long

using namespace std;          

const int N = (int)5e5 + 7;

int n;
int a[N], dp[N], ind[N];
ll pref[N];

main() {
	scanf("%d", &n);
	for (int i = 1; i <= n; i++) {
		scanf("%d", &a[i]);
		pref[i] = pref[i - 1] + a[i];
	}
	for (int i = 1; i <= n; i++) {
		ind[i] = max(ind[i], ind[i - 1]);
		dp[i] = dp[ind[i]] + 1;
		int l = i;
		int r = n + 1;
		ll X = pref[i] * 2 - pref[ind[i]];
		while (r - l > 1) {
			int mid = (r + l) >> 1;
			if (X <= pref[mid]) {
				r = mid;
			} else {
				l = mid;
			}
		}
		ind[r] = i;
	}
	cout << dp[n];
}

Compilation message

segments.cpp:13:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main() {
      ^
segments.cpp: In function 'int main()':
segments.cpp:14:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
  ~~~~~^~~~~~~~~~
segments.cpp:16:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &a[i]);
   ~~~~~^~~~~~~~~~~~~

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 404 KB Output is correct
5 Correct 4 ms 376 KB Output is correct
6 Correct 3 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 504 KB Output is correct
12 Correct 5 ms 376 KB Output is correct
13 Correct 3 ms 504 KB Output is correct
14 Correct 2 ms 380 KB Output is correct
15 Correct 5 ms 376 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 404 KB Output is correct
5 Correct 4 ms 376 KB Output is correct
6 Correct 3 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 504 KB Output is correct
12 Correct 5 ms 376 KB Output is correct
13 Correct 3 ms 504 KB Output is correct
14 Correct 2 ms 380 KB Output is correct
15 Correct 5 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 3 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 3 ms 376 KB Output is correct
22 Correct 3 ms 376 KB Output is correct
23 Correct 3 ms 452 KB Output is correct
24 Correct 4 ms 376 KB Output is correct
25 Correct 2 ms 376 KB Output is correct
26 Correct 2 ms 376 KB Output is correct
27 Correct 2 ms 376 KB Output is correct
28 Correct 2 ms 376 KB Output is correct
29 Correct 2 ms 424 KB Output is correct
30 Correct 2 ms 376 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 404 KB Output is correct
5 Correct 4 ms 376 KB Output is correct
6 Correct 3 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 504 KB Output is correct
12 Correct 5 ms 376 KB Output is correct
13 Correct 3 ms 504 KB Output is correct
14 Correct 2 ms 380 KB Output is correct
15 Correct 5 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 3 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 3 ms 376 KB Output is correct
22 Correct 3 ms 376 KB Output is correct
23 Correct 3 ms 452 KB Output is correct
24 Correct 4 ms 376 KB Output is correct
25 Correct 2 ms 376 KB Output is correct
26 Correct 2 ms 376 KB Output is correct
27 Correct 2 ms 376 KB Output is correct
28 Correct 2 ms 376 KB Output is correct
29 Correct 2 ms 424 KB Output is correct
30 Correct 2 ms 376 KB Output is correct
31 Correct 2 ms 376 KB Output is correct
32 Correct 3 ms 376 KB Output is correct
33 Correct 3 ms 632 KB Output is correct
34 Correct 3 ms 376 KB Output is correct
35 Correct 3 ms 376 KB Output is correct
36 Correct 3 ms 376 KB Output is correct
37 Correct 2 ms 376 KB Output is correct
38 Correct 3 ms 376 KB Output is correct
39 Correct 3 ms 376 KB Output is correct
40 Correct 3 ms 380 KB Output is correct
41 Correct 5 ms 376 KB Output is correct
42 Correct 2 ms 376 KB Output is correct
43 Correct 3 ms 376 KB Output is correct
44 Correct 3 ms 376 KB Output is correct
45 Correct 1 ms 376 KB Output is correct

Subtask #4
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 404 KB Output is correct
5 Correct 4 ms 376 KB Output is correct
6 Correct 3 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 504 KB Output is correct
12 Correct 5 ms 376 KB Output is correct
13 Correct 3 ms 504 KB Output is correct
14 Correct 2 ms 380 KB Output is correct
15 Correct 5 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 3 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 3 ms 376 KB Output is correct
22 Correct 3 ms 376 KB Output is correct
23 Correct 3 ms 452 KB Output is correct
24 Correct 4 ms 376 KB Output is correct
25 Correct 2 ms 376 KB Output is correct
26 Correct 2 ms 376 KB Output is correct
27 Correct 2 ms 376 KB Output is correct
28 Correct 2 ms 376 KB Output is correct
29 Correct 2 ms 424 KB Output is correct
30 Correct 2 ms 376 KB Output is correct
31 Correct 2 ms 376 KB Output is correct
32 Correct 3 ms 376 KB Output is correct
33 Correct 3 ms 632 KB Output is correct
34 Correct 3 ms 376 KB Output is correct
35 Correct 3 ms 376 KB Output is correct
36 Correct 3 ms 376 KB Output is correct
37 Correct 2 ms 376 KB Output is correct
38 Correct 3 ms 376 KB Output is correct
39 Correct 3 ms 376 KB Output is correct
40 Correct 3 ms 380 KB Output is correct
41 Correct 5 ms 376 KB Output is correct
42 Correct 2 ms 376 KB Output is correct
43 Correct 3 ms 376 KB Output is correct
44 Correct 3 ms 376 KB Output is correct
45 Correct 1 ms 376 KB Output is correct
46 Correct 22 ms 2516 KB Output is correct
47 Correct 35 ms 2680 KB Output is correct
48 Correct 27 ms 2556 KB Output is correct
49 Correct 27 ms 2616 KB Output is correct
50 Correct 25 ms 2552 KB Output is correct
51 Correct 30 ms 2552 KB Output is correct
52 Correct 16 ms 1656 KB Output is correct
53 Correct 10 ms 1144 KB Output is correct
54 Correct 24 ms 2556 KB Output is correct
55 Correct 27 ms 2444 KB Output is correct
56 Correct 22 ms 2424 KB Output is correct
57 Correct 22 ms 2424 KB Output is correct
58 Correct 22 ms 2424 KB Output is correct
59 Correct 23 ms 2424 KB Output is correct
60 Correct 23 ms 2424 KB Output is correct

Subtask #5
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 404 KB Output is correct
5 Correct 4 ms 376 KB Output is correct
6 Correct 3 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 504 KB Output is correct
12 Correct 5 ms 376 KB Output is correct
13 Correct 3 ms 504 KB Output is correct
14 Correct 2 ms 380 KB Output is correct
15 Correct 5 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 3 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 3 ms 376 KB Output is correct
22 Correct 3 ms 376 KB Output is correct
23 Correct 3 ms 452 KB Output is correct
24 Correct 4 ms 376 KB Output is correct
25 Correct 2 ms 376 KB Output is correct
26 Correct 2 ms 376 KB Output is correct
27 Correct 2 ms 376 KB Output is correct
28 Correct 2 ms 376 KB Output is correct
29 Correct 2 ms 424 KB Output is correct
30 Correct 2 ms 376 KB Output is correct
31 Correct 2 ms 376 KB Output is correct
32 Correct 3 ms 376 KB Output is correct
33 Correct 3 ms 632 KB Output is correct
34 Correct 3 ms 376 KB Output is correct
35 Correct 3 ms 376 KB Output is correct
36 Correct 3 ms 376 KB Output is correct
37 Correct 2 ms 376 KB Output is correct
38 Correct 3 ms 376 KB Output is correct
39 Correct 3 ms 376 KB Output is correct
40 Correct 3 ms 380 KB Output is correct
41 Correct 5 ms 376 KB Output is correct
42 Correct 2 ms 376 KB Output is correct
43 Correct 3 ms 376 KB Output is correct
44 Correct 3 ms 376 KB Output is correct
45 Correct 1 ms 376 KB Output is correct
46 Correct 22 ms 2516 KB Output is correct
47 Correct 35 ms 2680 KB Output is correct
48 Correct 27 ms 2556 KB Output is correct
49 Correct 27 ms 2616 KB Output is correct
50 Correct 25 ms 2552 KB Output is correct
51 Correct 30 ms 2552 KB Output is correct
52 Correct 16 ms 1656 KB Output is correct
53 Correct 10 ms 1144 KB Output is correct
54 Correct 24 ms 2556 KB Output is correct
55 Correct 27 ms 2444 KB Output is correct
56 Correct 22 ms 2424 KB Output is correct
57 Correct 22 ms 2424 KB Output is correct
58 Correct 22 ms 2424 KB Output is correct
59 Correct 23 ms 2424 KB Output is correct
60 Correct 23 ms 2424 KB Output is correct
61 Correct 105 ms 10280 KB Output is correct
62 Correct 106 ms 10204 KB Output is correct
63 Correct 108 ms 10332 KB Output is correct
64 Correct 142 ms 10240 KB Output is correct
65 Correct 122 ms 10232 KB Output is correct
66 Correct 146 ms 10232 KB Output is correct
67 Correct 116 ms 8312 KB Output is correct
68 Correct 58 ms 4344 KB Output is correct
69 Correct 103 ms 10372 KB Output is correct
70 Correct 131 ms 10232 KB Output is correct
71 Correct 107 ms 10360 KB Output is correct
72 Correct 110 ms 10232 KB Output is correct
73 Correct 113 ms 10284 KB Output is correct
74 Correct 115 ms 10360 KB Output is correct
75 Correct 115 ms 10236 KB Output is correct