oj.uz

Submission #438621

# Submission time Handle Problem Language Result Execution time Memory
438621 2021-06-28T10:18:24 Z jazzup Bigger segments (IZhO19_segments) C++
100 / 100
 320 ms 46256 KB 
#include <bits/stdc++.h>
 
#define long long long
#define pii pair<long, long>
#define x first
#define y second
 
using namespace std;
 
const int N = 5e5 + 5;
 
int n, dp[N];
long A[N], pref[N];
 
int main() {
	scanf("%d", &n);
	for(int i = 1; i <= n; i++) {
		scanf("%lld", A + i);
		pref[i] = pref[i - 1] + A[i];
	}
	
	set<pii, greater<pii> > S;
	S.emplace(0, 0);
	for(int i = 1; i <= n; i++) {
		auto it = S.lower_bound(pii(pref[i], 1e9));
 
		dp[i] = dp[it->y] + 1;
		long val = 2ll * pref[i] - pref[it->y];
		auto now = S.begin();
		while(now != S.end()) {
			if(now->x >= val) now = S.erase(now);
			else break;
		}
		S.emplace(val, i);
	}
	printf("%d\n", dp[n]);
 
	return 0;
 
}

Compilation message

segments.cpp: In function 'int main()':
segments.cpp:16:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |  scanf("%d", &n);
      |  ~~~~~^~~~~~~~~~
segments.cpp:18:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |   scanf("%lld", A + i);
      |   ~~~~~^~~~~~~~~~~~~~~

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 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 1 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 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 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 1 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 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 332 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 308 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 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 1 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 332 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 1 ms 300 KB Output is correct
30 Correct 1 ms 332 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 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 1 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 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 332 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 308 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 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 1 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 332 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 1 ms 300 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 2 ms 572 KB Output is correct
32 Correct 2 ms 460 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 2 ms 588 KB Output is correct
35 Correct 2 ms 588 KB Output is correct
36 Correct 2 ms 460 KB Output is correct
37 Correct 3 ms 460 KB Output is correct
38 Correct 2 ms 460 KB Output is correct
39 Correct 2 ms 460 KB Output is correct
40 Correct 2 ms 460 KB Output is correct
41 Correct 2 ms 460 KB Output is correct
42 Correct 2 ms 460 KB Output is correct
43 Correct 2 ms 460 KB Output is correct
44 Correct 2 ms 460 KB Output is correct
45 Correct 2 ms 460 KB Output is correct

Subtask #4
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 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 1 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 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 332 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 308 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 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 1 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 332 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 1 ms 300 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 2 ms 572 KB Output is correct
32 Correct 2 ms 460 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 2 ms 588 KB Output is correct
35 Correct 2 ms 588 KB Output is correct
36 Correct 2 ms 460 KB Output is correct
37 Correct 3 ms 460 KB Output is correct
38 Correct 2 ms 460 KB Output is correct
39 Correct 2 ms 460 KB Output is correct
40 Correct 2 ms 460 KB Output is correct
41 Correct 2 ms 460 KB Output is correct
42 Correct 2 ms 460 KB Output is correct
43 Correct 2 ms 460 KB Output is correct
44 Correct 2 ms 460 KB Output is correct
45 Correct 2 ms 460 KB Output is correct
46 Correct 41 ms 8924 KB Output is correct
47 Correct 40 ms 6980 KB Output is correct
48 Correct 38 ms 3460 KB Output is correct
49 Correct 46 ms 6596 KB Output is correct
50 Correct 52 ms 9428 KB Output is correct
51 Correct 51 ms 8212 KB Output is correct
52 Correct 26 ms 4332 KB Output is correct
53 Correct 17 ms 2644 KB Output is correct
54 Correct 48 ms 6980 KB Output is correct
55 Correct 63 ms 8884 KB Output is correct
56 Correct 48 ms 8904 KB Output is correct
57 Correct 44 ms 8412 KB Output is correct
58 Correct 45 ms 8352 KB Output is correct
59 Correct 48 ms 9184 KB Output is correct
60 Correct 57 ms 9084 KB Output is correct

Subtask #5
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 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 1 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 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 332 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 308 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 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 1 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 332 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 1 ms 300 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 2 ms 572 KB Output is correct
32 Correct 2 ms 460 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 2 ms 588 KB Output is correct
35 Correct 2 ms 588 KB Output is correct
36 Correct 2 ms 460 KB Output is correct
37 Correct 3 ms 460 KB Output is correct
38 Correct 2 ms 460 KB Output is correct
39 Correct 2 ms 460 KB Output is correct
40 Correct 2 ms 460 KB Output is correct
41 Correct 2 ms 460 KB Output is correct
42 Correct 2 ms 460 KB Output is correct
43 Correct 2 ms 460 KB Output is correct
44 Correct 2 ms 460 KB Output is correct
45 Correct 2 ms 460 KB Output is correct
46 Correct 41 ms 8924 KB Output is correct
47 Correct 40 ms 6980 KB Output is correct
48 Correct 38 ms 3460 KB Output is correct
49 Correct 46 ms 6596 KB Output is correct
50 Correct 52 ms 9428 KB Output is correct
51 Correct 51 ms 8212 KB Output is correct
52 Correct 26 ms 4332 KB Output is correct
53 Correct 17 ms 2644 KB Output is correct
54 Correct 48 ms 6980 KB Output is correct
55 Correct 63 ms 8884 KB Output is correct
56 Correct 48 ms 8904 KB Output is correct
57 Correct 44 ms 8412 KB Output is correct
58 Correct 45 ms 8352 KB Output is correct
59 Correct 48 ms 9184 KB Output is correct
60 Correct 57 ms 9084 KB Output is correct
61 Correct 217 ms 43272 KB Output is correct
62 Correct 234 ms 43280 KB Output is correct
63 Correct 232 ms 35204 KB Output is correct
64 Correct 274 ms 20844 KB Output is correct
65 Correct 283 ms 46256 KB Output is correct
66 Correct 271 ms 39748 KB Output is correct
67 Correct 243 ms 31824 KB Output is correct
68 Correct 126 ms 16008 KB Output is correct
69 Correct 247 ms 33984 KB Output is correct
70 Correct 320 ms 43704 KB Output is correct
71 Correct 270 ms 43248 KB Output is correct
72 Correct 253 ms 37324 KB Output is correct
73 Correct 260 ms 39616 KB Output is correct
74 Correct 278 ms 44636 KB Output is correct
75 Correct 267 ms 44612 KB Output is correct