# include <bits/stdc++.h>
using namespace std;
long long n,a[500005],le,ri,mid,sum[500005],s1,ans;
pair <long long , long long> dp[500005];
int main()
{
cin>>n;
for (long long i=1; i<=n; i++)
{
cin>>a[i];
sum[i]=sum[i-1]+a[i];
}
for (long long i=1; i<=n; i++)
{
dp[i].second=max(dp[i].second,dp[i-1].second);
s1=sum[i]-sum[dp[i].second];
dp[i].first=dp[dp[i].second].first+1;
le=i+1;
ri=n;
ans=0;
while (le<=ri)
{
mid=(le+ri)/2;
if (sum[mid]-sum[i]>=s1)
{
ri=mid-1;
ans=mid;
}
else le=mid+1;
}
dp[ans].second=i;
}
cout<<dp[n].first<<endl;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
4 ms |
384 KB |
Output is correct |
2 |
Correct |
5 ms |
384 KB |
Output is correct |
3 |
Correct |
5 ms |
384 KB |
Output is correct |
4 |
Correct |
5 ms |
384 KB |
Output is correct |
5 |
Correct |
4 ms |
384 KB |
Output is correct |
6 |
Correct |
5 ms |
384 KB |
Output is correct |
7 |
Correct |
5 ms |
384 KB |
Output is correct |
8 |
Correct |
5 ms |
384 KB |
Output is correct |
9 |
Correct |
4 ms |
384 KB |
Output is correct |
10 |
Correct |
4 ms |
384 KB |
Output is correct |
11 |
Correct |
4 ms |
384 KB |
Output is correct |
12 |
Correct |
5 ms |
384 KB |
Output is correct |
13 |
Correct |
5 ms |
384 KB |
Output is correct |
14 |
Correct |
5 ms |
384 KB |
Output is correct |
15 |
Correct |
5 ms |
384 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
4 ms |
384 KB |
Output is correct |
2 |
Correct |
5 ms |
384 KB |
Output is correct |
3 |
Correct |
5 ms |
384 KB |
Output is correct |
4 |
Correct |
5 ms |
384 KB |
Output is correct |
5 |
Correct |
4 ms |
384 KB |
Output is correct |
6 |
Correct |
5 ms |
384 KB |
Output is correct |
7 |
Correct |
5 ms |
384 KB |
Output is correct |
8 |
Correct |
5 ms |
384 KB |
Output is correct |
9 |
Correct |
4 ms |
384 KB |
Output is correct |
10 |
Correct |
4 ms |
384 KB |
Output is correct |
11 |
Correct |
4 ms |
384 KB |
Output is correct |
12 |
Correct |
5 ms |
384 KB |
Output is correct |
13 |
Correct |
5 ms |
384 KB |
Output is correct |
14 |
Correct |
5 ms |
384 KB |
Output is correct |
15 |
Correct |
5 ms |
384 KB |
Output is correct |
16 |
Correct |
5 ms |
384 KB |
Output is correct |
17 |
Correct |
5 ms |
384 KB |
Output is correct |
18 |
Correct |
5 ms |
384 KB |
Output is correct |
19 |
Correct |
5 ms |
384 KB |
Output is correct |
20 |
Correct |
5 ms |
384 KB |
Output is correct |
21 |
Correct |
5 ms |
384 KB |
Output is correct |
22 |
Correct |
5 ms |
384 KB |
Output is correct |
23 |
Correct |
6 ms |
384 KB |
Output is correct |
24 |
Correct |
5 ms |
384 KB |
Output is correct |
25 |
Correct |
5 ms |
384 KB |
Output is correct |
26 |
Correct |
5 ms |
384 KB |
Output is correct |
27 |
Correct |
5 ms |
384 KB |
Output is correct |
28 |
Correct |
5 ms |
384 KB |
Output is correct |
29 |
Correct |
5 ms |
384 KB |
Output is correct |
30 |
Correct |
5 ms |
384 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
4 ms |
384 KB |
Output is correct |
2 |
Correct |
5 ms |
384 KB |
Output is correct |
3 |
Correct |
5 ms |
384 KB |
Output is correct |
4 |
Correct |
5 ms |
384 KB |
Output is correct |
5 |
Correct |
4 ms |
384 KB |
Output is correct |
6 |
Correct |
5 ms |
384 KB |
Output is correct |
7 |
Correct |
5 ms |
384 KB |
Output is correct |
8 |
Correct |
5 ms |
384 KB |
Output is correct |
9 |
Correct |
4 ms |
384 KB |
Output is correct |
10 |
Correct |
4 ms |
384 KB |
Output is correct |
11 |
Correct |
4 ms |
384 KB |
Output is correct |
12 |
Correct |
5 ms |
384 KB |
Output is correct |
13 |
Correct |
5 ms |
384 KB |
Output is correct |
14 |
Correct |
5 ms |
384 KB |
Output is correct |
15 |
Correct |
5 ms |
384 KB |
Output is correct |
16 |
Correct |
5 ms |
384 KB |
Output is correct |
17 |
Correct |
5 ms |
384 KB |
Output is correct |
18 |
Correct |
5 ms |
384 KB |
Output is correct |
19 |
Correct |
5 ms |
384 KB |
Output is correct |
20 |
Correct |
5 ms |
384 KB |
Output is correct |
21 |
Correct |
5 ms |
384 KB |
Output is correct |
22 |
Correct |
5 ms |
384 KB |
Output is correct |
23 |
Correct |
6 ms |
384 KB |
Output is correct |
24 |
Correct |
5 ms |
384 KB |
Output is correct |
25 |
Correct |
5 ms |
384 KB |
Output is correct |
26 |
Correct |
5 ms |
384 KB |
Output is correct |
27 |
Correct |
5 ms |
384 KB |
Output is correct |
28 |
Correct |
5 ms |
384 KB |
Output is correct |
29 |
Correct |
5 ms |
384 KB |
Output is correct |
30 |
Correct |
5 ms |
384 KB |
Output is correct |
31 |
Correct |
6 ms |
384 KB |
Output is correct |
32 |
Correct |
6 ms |
512 KB |
Output is correct |
33 |
Correct |
6 ms |
512 KB |
Output is correct |
34 |
Correct |
6 ms |
512 KB |
Output is correct |
35 |
Correct |
6 ms |
512 KB |
Output is correct |
36 |
Correct |
7 ms |
512 KB |
Output is correct |
37 |
Correct |
6 ms |
384 KB |
Output is correct |
38 |
Correct |
6 ms |
384 KB |
Output is correct |
39 |
Correct |
5 ms |
512 KB |
Output is correct |
40 |
Correct |
6 ms |
512 KB |
Output is correct |
41 |
Correct |
5 ms |
384 KB |
Output is correct |
42 |
Correct |
5 ms |
384 KB |
Output is correct |
43 |
Correct |
6 ms |
512 KB |
Output is correct |
44 |
Correct |
6 ms |
384 KB |
Output is correct |
45 |
Correct |
6 ms |
384 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
4 ms |
384 KB |
Output is correct |
2 |
Correct |
5 ms |
384 KB |
Output is correct |
3 |
Correct |
5 ms |
384 KB |
Output is correct |
4 |
Correct |
5 ms |
384 KB |
Output is correct |
5 |
Correct |
4 ms |
384 KB |
Output is correct |
6 |
Correct |
5 ms |
384 KB |
Output is correct |
7 |
Correct |
5 ms |
384 KB |
Output is correct |
8 |
Correct |
5 ms |
384 KB |
Output is correct |
9 |
Correct |
4 ms |
384 KB |
Output is correct |
10 |
Correct |
4 ms |
384 KB |
Output is correct |
11 |
Correct |
4 ms |
384 KB |
Output is correct |
12 |
Correct |
5 ms |
384 KB |
Output is correct |
13 |
Correct |
5 ms |
384 KB |
Output is correct |
14 |
Correct |
5 ms |
384 KB |
Output is correct |
15 |
Correct |
5 ms |
384 KB |
Output is correct |
16 |
Correct |
5 ms |
384 KB |
Output is correct |
17 |
Correct |
5 ms |
384 KB |
Output is correct |
18 |
Correct |
5 ms |
384 KB |
Output is correct |
19 |
Correct |
5 ms |
384 KB |
Output is correct |
20 |
Correct |
5 ms |
384 KB |
Output is correct |
21 |
Correct |
5 ms |
384 KB |
Output is correct |
22 |
Correct |
5 ms |
384 KB |
Output is correct |
23 |
Correct |
6 ms |
384 KB |
Output is correct |
24 |
Correct |
5 ms |
384 KB |
Output is correct |
25 |
Correct |
5 ms |
384 KB |
Output is correct |
26 |
Correct |
5 ms |
384 KB |
Output is correct |
27 |
Correct |
5 ms |
384 KB |
Output is correct |
28 |
Correct |
5 ms |
384 KB |
Output is correct |
29 |
Correct |
5 ms |
384 KB |
Output is correct |
30 |
Correct |
5 ms |
384 KB |
Output is correct |
31 |
Correct |
6 ms |
384 KB |
Output is correct |
32 |
Correct |
6 ms |
512 KB |
Output is correct |
33 |
Correct |
6 ms |
512 KB |
Output is correct |
34 |
Correct |
6 ms |
512 KB |
Output is correct |
35 |
Correct |
6 ms |
512 KB |
Output is correct |
36 |
Correct |
7 ms |
512 KB |
Output is correct |
37 |
Correct |
6 ms |
384 KB |
Output is correct |
38 |
Correct |
6 ms |
384 KB |
Output is correct |
39 |
Correct |
5 ms |
512 KB |
Output is correct |
40 |
Correct |
6 ms |
512 KB |
Output is correct |
41 |
Correct |
5 ms |
384 KB |
Output is correct |
42 |
Correct |
5 ms |
384 KB |
Output is correct |
43 |
Correct |
6 ms |
512 KB |
Output is correct |
44 |
Correct |
6 ms |
384 KB |
Output is correct |
45 |
Correct |
6 ms |
384 KB |
Output is correct |
46 |
Correct |
42 ms |
3832 KB |
Output is correct |
47 |
Correct |
46 ms |
4008 KB |
Output is correct |
48 |
Correct |
68 ms |
4344 KB |
Output is correct |
49 |
Correct |
65 ms |
4472 KB |
Output is correct |
50 |
Correct |
67 ms |
4472 KB |
Output is correct |
51 |
Correct |
69 ms |
4472 KB |
Output is correct |
52 |
Correct |
36 ms |
2424 KB |
Output is correct |
53 |
Correct |
23 ms |
1528 KB |
Output is correct |
54 |
Correct |
31 ms |
3704 KB |
Output is correct |
55 |
Correct |
70 ms |
4540 KB |
Output is correct |
56 |
Correct |
42 ms |
3960 KB |
Output is correct |
57 |
Correct |
41 ms |
3960 KB |
Output is correct |
58 |
Correct |
41 ms |
3960 KB |
Output is correct |
59 |
Correct |
47 ms |
4092 KB |
Output is correct |
60 |
Correct |
47 ms |
4088 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
4 ms |
384 KB |
Output is correct |
2 |
Correct |
5 ms |
384 KB |
Output is correct |
3 |
Correct |
5 ms |
384 KB |
Output is correct |
4 |
Correct |
5 ms |
384 KB |
Output is correct |
5 |
Correct |
4 ms |
384 KB |
Output is correct |
6 |
Correct |
5 ms |
384 KB |
Output is correct |
7 |
Correct |
5 ms |
384 KB |
Output is correct |
8 |
Correct |
5 ms |
384 KB |
Output is correct |
9 |
Correct |
4 ms |
384 KB |
Output is correct |
10 |
Correct |
4 ms |
384 KB |
Output is correct |
11 |
Correct |
4 ms |
384 KB |
Output is correct |
12 |
Correct |
5 ms |
384 KB |
Output is correct |
13 |
Correct |
5 ms |
384 KB |
Output is correct |
14 |
Correct |
5 ms |
384 KB |
Output is correct |
15 |
Correct |
5 ms |
384 KB |
Output is correct |
16 |
Correct |
5 ms |
384 KB |
Output is correct |
17 |
Correct |
5 ms |
384 KB |
Output is correct |
18 |
Correct |
5 ms |
384 KB |
Output is correct |
19 |
Correct |
5 ms |
384 KB |
Output is correct |
20 |
Correct |
5 ms |
384 KB |
Output is correct |
21 |
Correct |
5 ms |
384 KB |
Output is correct |
22 |
Correct |
5 ms |
384 KB |
Output is correct |
23 |
Correct |
6 ms |
384 KB |
Output is correct |
24 |
Correct |
5 ms |
384 KB |
Output is correct |
25 |
Correct |
5 ms |
384 KB |
Output is correct |
26 |
Correct |
5 ms |
384 KB |
Output is correct |
27 |
Correct |
5 ms |
384 KB |
Output is correct |
28 |
Correct |
5 ms |
384 KB |
Output is correct |
29 |
Correct |
5 ms |
384 KB |
Output is correct |
30 |
Correct |
5 ms |
384 KB |
Output is correct |
31 |
Correct |
6 ms |
384 KB |
Output is correct |
32 |
Correct |
6 ms |
512 KB |
Output is correct |
33 |
Correct |
6 ms |
512 KB |
Output is correct |
34 |
Correct |
6 ms |
512 KB |
Output is correct |
35 |
Correct |
6 ms |
512 KB |
Output is correct |
36 |
Correct |
7 ms |
512 KB |
Output is correct |
37 |
Correct |
6 ms |
384 KB |
Output is correct |
38 |
Correct |
6 ms |
384 KB |
Output is correct |
39 |
Correct |
5 ms |
512 KB |
Output is correct |
40 |
Correct |
6 ms |
512 KB |
Output is correct |
41 |
Correct |
5 ms |
384 KB |
Output is correct |
42 |
Correct |
5 ms |
384 KB |
Output is correct |
43 |
Correct |
6 ms |
512 KB |
Output is correct |
44 |
Correct |
6 ms |
384 KB |
Output is correct |
45 |
Correct |
6 ms |
384 KB |
Output is correct |
46 |
Correct |
42 ms |
3832 KB |
Output is correct |
47 |
Correct |
46 ms |
4008 KB |
Output is correct |
48 |
Correct |
68 ms |
4344 KB |
Output is correct |
49 |
Correct |
65 ms |
4472 KB |
Output is correct |
50 |
Correct |
67 ms |
4472 KB |
Output is correct |
51 |
Correct |
69 ms |
4472 KB |
Output is correct |
52 |
Correct |
36 ms |
2424 KB |
Output is correct |
53 |
Correct |
23 ms |
1528 KB |
Output is correct |
54 |
Correct |
31 ms |
3704 KB |
Output is correct |
55 |
Correct |
70 ms |
4540 KB |
Output is correct |
56 |
Correct |
42 ms |
3960 KB |
Output is correct |
57 |
Correct |
41 ms |
3960 KB |
Output is correct |
58 |
Correct |
41 ms |
3960 KB |
Output is correct |
59 |
Correct |
47 ms |
4092 KB |
Output is correct |
60 |
Correct |
47 ms |
4088 KB |
Output is correct |
61 |
Correct |
178 ms |
17888 KB |
Output is correct |
62 |
Correct |
183 ms |
17912 KB |
Output is correct |
63 |
Correct |
210 ms |
18424 KB |
Output is correct |
64 |
Correct |
309 ms |
20600 KB |
Output is correct |
65 |
Correct |
315 ms |
20860 KB |
Output is correct |
66 |
Correct |
326 ms |
20856 KB |
Output is correct |
67 |
Correct |
267 ms |
16760 KB |
Output is correct |
68 |
Correct |
132 ms |
8568 KB |
Output is correct |
69 |
Correct |
136 ms |
17016 KB |
Output is correct |
70 |
Correct |
323 ms |
20856 KB |
Output is correct |
71 |
Correct |
172 ms |
17912 KB |
Output is correct |
72 |
Correct |
231 ms |
18296 KB |
Output is correct |
73 |
Correct |
228 ms |
18936 KB |
Output is correct |
74 |
Correct |
242 ms |
19320 KB |
Output is correct |
75 |
Correct |
248 ms |
19448 KB |
Output is correct |