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Submission #308807

# Submission time Handle Problem Language Result Execution time Memory
308807 2020-10-02T01:00:49 Z nikatamliani Bigger segments (IZhO19_segments) C++14
100 / 100
 449 ms 17024 KB 
#include <bits/stdc++.h>
#define f first
#define s second 
#define ll long long 
using namespace std;
const int N = 5e5 + 10;
pair < int, ll > dp[N];
ll sum[N], p[N], n;
int main() {
    cin >> n;
    for(int i = 1; i <= n; ++i) cin >> sum[i], sum[i] += sum[i - 1];
    for(int i = 0; i <= n; ++i) {
        if(i && dp[i].f == dp[i - 1].f) {
            dp[i].s = min(dp[i].s, dp[i - 1].s + sum[i] - sum[i - 1]);
        }
        if(i && dp[i].f < dp[i - 1].f) {
            dp[i].f = dp[i - 1].f;
            dp[i].s = dp[i - 1].s + sum[i] - sum[i - 1];
        }
        int l = i + 1, r = n, ans = -1;
        while(r >= l) {
            int m = l + r >> 1;
            if(sum[m] - sum[i] >= dp[i].s) {
                r = m - 1;
                ans = m;
            } else {
                l = m + 1;
            }
        }
        if(~ans && dp[ans].f == dp[i].f + 1) {
            dp[ans].s = min(dp[ans].s, sum[ans] - sum[i]);
        }
        if(~ans && dp[ans].f < dp[i].f + 1) {
            dp[ans].f = dp[i].f + 1;
            dp[ans].s = sum[ans] - sum[i];
        }
    }
    cout << dp[n].f << '\n';
}

Compilation message

segments.cpp: In function 'int main()':
segments.cpp:22:23: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   22 |             int m = l + r >> 1;
      |                     ~~^~~

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 0 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 0 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 0 ms 384 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 0 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 0 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 0 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 1 ms 384 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 308 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 384 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 384 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 0 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 0 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 0 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 1 ms 384 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 308 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 384 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 384 KB Output is correct
31 Correct 2 ms 384 KB Output is correct
32 Correct 3 ms 384 KB Output is correct
33 Correct 3 ms 384 KB Output is correct
34 Correct 3 ms 384 KB Output is correct
35 Correct 3 ms 384 KB Output is correct
36 Correct 3 ms 384 KB Output is correct
37 Correct 3 ms 384 KB Output is correct
38 Correct 2 ms 384 KB Output is correct
39 Correct 1 ms 384 KB Output is correct
40 Correct 3 ms 384 KB Output is correct
41 Correct 1 ms 384 KB Output is correct
42 Correct 2 ms 384 KB Output is correct
43 Correct 1 ms 384 KB Output is correct
44 Correct 2 ms 384 KB Output is correct
45 Correct 2 ms 384 KB Output is correct

Subtask #4
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 0 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 0 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 0 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 1 ms 384 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 308 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 384 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 384 KB Output is correct
31 Correct 2 ms 384 KB Output is correct
32 Correct 3 ms 384 KB Output is correct
33 Correct 3 ms 384 KB Output is correct
34 Correct 3 ms 384 KB Output is correct
35 Correct 3 ms 384 KB Output is correct
36 Correct 3 ms 384 KB Output is correct
37 Correct 3 ms 384 KB Output is correct
38 Correct 2 ms 384 KB Output is correct
39 Correct 1 ms 384 KB Output is correct
40 Correct 3 ms 384 KB Output is correct
41 Correct 1 ms 384 KB Output is correct
42 Correct 2 ms 384 KB Output is correct
43 Correct 1 ms 384 KB Output is correct
44 Correct 2 ms 384 KB Output is correct
45 Correct 2 ms 384 KB Output is correct
46 Correct 45 ms 2680 KB Output is correct
47 Correct 55 ms 3192 KB Output is correct
48 Correct 80 ms 3660 KB Output is correct
49 Correct 85 ms 3576 KB Output is correct
50 Correct 88 ms 3704 KB Output is correct
51 Correct 91 ms 3704 KB Output is correct
52 Correct 46 ms 2040 KB Output is correct
53 Correct 28 ms 1272 KB Output is correct
54 Correct 34 ms 2936 KB Output is correct
55 Correct 90 ms 3704 KB Output is correct
56 Correct 50 ms 3320 KB Output is correct
57 Correct 47 ms 3064 KB Output is correct
58 Correct 50 ms 3192 KB Output is correct
59 Correct 59 ms 3320 KB Output is correct
60 Correct 61 ms 3320 KB Output is correct

Subtask #5
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 0 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 0 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 0 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 1 ms 384 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 308 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 384 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 384 KB Output is correct
31 Correct 2 ms 384 KB Output is correct
32 Correct 3 ms 384 KB Output is correct
33 Correct 3 ms 384 KB Output is correct
34 Correct 3 ms 384 KB Output is correct
35 Correct 3 ms 384 KB Output is correct
36 Correct 3 ms 384 KB Output is correct
37 Correct 3 ms 384 KB Output is correct
38 Correct 2 ms 384 KB Output is correct
39 Correct 1 ms 384 KB Output is correct
40 Correct 3 ms 384 KB Output is correct
41 Correct 1 ms 384 KB Output is correct
42 Correct 2 ms 384 KB Output is correct
43 Correct 1 ms 384 KB Output is correct
44 Correct 2 ms 384 KB Output is correct
45 Correct 2 ms 384 KB Output is correct
46 Correct 45 ms 2680 KB Output is correct
47 Correct 55 ms 3192 KB Output is correct
48 Correct 80 ms 3660 KB Output is correct
49 Correct 85 ms 3576 KB Output is correct
50 Correct 88 ms 3704 KB Output is correct
51 Correct 91 ms 3704 KB Output is correct
52 Correct 46 ms 2040 KB Output is correct
53 Correct 28 ms 1272 KB Output is correct
54 Correct 34 ms 2936 KB Output is correct
55 Correct 90 ms 3704 KB Output is correct
56 Correct 50 ms 3320 KB Output is correct
57 Correct 47 ms 3064 KB Output is correct
58 Correct 50 ms 3192 KB Output is correct
59 Correct 59 ms 3320 KB Output is correct
60 Correct 61 ms 3320 KB Output is correct
61 Correct 227 ms 14072 KB Output is correct
62 Correct 236 ms 14072 KB Output is correct
63 Correct 274 ms 14588 KB Output is correct
64 Correct 422 ms 16632 KB Output is correct
65 Correct 445 ms 17024 KB Output is correct
66 Correct 449 ms 17016 KB Output is correct
67 Correct 357 ms 13560 KB Output is correct
68 Correct 180 ms 7032 KB Output is correct
69 Correct 172 ms 13048 KB Output is correct
70 Correct 447 ms 17016 KB Output is correct
71 Correct 226 ms 14200 KB Output is correct
72 Correct 268 ms 14456 KB Output is correct
73 Correct 319 ms 14968 KB Output is correct
74 Correct 342 ms 15352 KB Output is correct
75 Correct 325 ms 15352 KB Output is correct