oj.uz

Submission #433247

# Submission time Handle Problem Language Result Execution time Memory
433247 2021-06-19T10:54:05 Z cpp219 Bigger segments (IZhO19_segments) C++14
100 / 100
 100 ms 20804 KB 
#pragma GCC optimization "O2"
#pragma GCC optimization "unroll-loop"
#pragma GCC target ("avx2")

#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define fs first
#define sc second
using namespace std;
const ll N = 5e5 + 9;
const ll mod = 1e9 + 7;
const ll base = 31;
typedef pair<ll,ll> LL;

ll n,a[N],pre[N],dp[N],best[N];

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0), cout.tie(0);
    #define task "tst"
    if (fopen(task".inp", "r")){
        freopen(task".inp", "r", stdin);
        //freopen(task".out", "w", stdout);
    }
    cin>>n;
    for (ll i = 1;i <= n;i++) cin>>a[i],pre[i] = pre[i - 1] + a[i];
    for (ll i = 1;i <= n;i++){
        best[i] = max(best[i],best[i - 1]);
        dp[i] = dp[best[i]] + 1;
        ll cur = 2*pre[i] - pre[best[i]];
        ll nxt = lower_bound(pre + 1,pre + n + 1,cur) - pre;
        best[nxt] = max(best[nxt],i);
    }
    cout<<dp[n];
}

Compilation message

segments.cpp:1: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    1 | #pragma GCC optimization "O2"
      | 
segments.cpp:2: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    2 | #pragma GCC optimization "unroll-loop"
      | 
segments.cpp: In function 'int main()':
segments.cpp:23:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   23 |         freopen(task".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 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 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 320 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 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 328 KB Output is correct
14 Correct 1 ms 324 KB Output is correct
15 Correct 1 ms 332 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 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 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 320 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 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 328 KB Output is correct
14 Correct 1 ms 324 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 328 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 384 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 320 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 332 KB Output is correct
30 Correct 1 ms 320 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 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 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 320 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 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 328 KB Output is correct
14 Correct 1 ms 324 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 328 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 384 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 320 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 332 KB Output is correct
30 Correct 1 ms 320 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 1 ms 460 KB Output is correct
33 Correct 1 ms 460 KB Output is correct
34 Correct 1 ms 464 KB Output is correct
35 Correct 1 ms 460 KB Output is correct
36 Correct 1 ms 460 KB Output is correct
37 Correct 1 ms 460 KB Output is correct
38 Correct 1 ms 332 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 1 ms 460 KB Output is correct
41 Correct 1 ms 332 KB Output is correct
42 Correct 1 ms 328 KB Output is correct
43 Correct 1 ms 332 KB Output is correct
44 Correct 1 ms 460 KB Output is correct
45 Correct 1 ms 332 KB Output is correct

Subtask #4
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 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 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 320 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 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 328 KB Output is correct
14 Correct 1 ms 324 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 328 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 384 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 320 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 332 KB Output is correct
30 Correct 1 ms 320 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 1 ms 460 KB Output is correct
33 Correct 1 ms 460 KB Output is correct
34 Correct 1 ms 464 KB Output is correct
35 Correct 1 ms 460 KB Output is correct
36 Correct 1 ms 460 KB Output is correct
37 Correct 1 ms 460 KB Output is correct
38 Correct 1 ms 332 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 1 ms 460 KB Output is correct
41 Correct 1 ms 332 KB Output is correct
42 Correct 1 ms 328 KB Output is correct
43 Correct 1 ms 332 KB Output is correct
44 Correct 1 ms 460 KB Output is correct
45 Correct 1 ms 332 KB Output is correct
46 Correct 13 ms 3788 KB Output is correct
47 Correct 15 ms 3916 KB Output is correct
48 Correct 18 ms 4300 KB Output is correct
49 Correct 20 ms 4300 KB Output is correct
50 Correct 22 ms 4348 KB Output is correct
51 Correct 24 ms 4316 KB Output is correct
52 Correct 10 ms 2372 KB Output is correct
53 Correct 6 ms 1508 KB Output is correct
54 Correct 15 ms 3592 KB Output is correct
55 Correct 20 ms 4432 KB Output is correct
56 Correct 28 ms 3948 KB Output is correct
57 Correct 15 ms 3828 KB Output is correct
58 Correct 16 ms 3916 KB Output is correct
59 Correct 19 ms 4044 KB Output is correct
60 Correct 18 ms 3976 KB Output is correct

Subtask #5
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 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 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 320 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 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 328 KB Output is correct
14 Correct 1 ms 324 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 328 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 384 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 320 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 332 KB Output is correct
30 Correct 1 ms 320 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 1 ms 460 KB Output is correct
33 Correct 1 ms 460 KB Output is correct
34 Correct 1 ms 464 KB Output is correct
35 Correct 1 ms 460 KB Output is correct
36 Correct 1 ms 460 KB Output is correct
37 Correct 1 ms 460 KB Output is correct
38 Correct 1 ms 332 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 1 ms 460 KB Output is correct
41 Correct 1 ms 332 KB Output is correct
42 Correct 1 ms 328 KB Output is correct
43 Correct 1 ms 332 KB Output is correct
44 Correct 1 ms 460 KB Output is correct
45 Correct 1 ms 332 KB Output is correct
46 Correct 13 ms 3788 KB Output is correct
47 Correct 15 ms 3916 KB Output is correct
48 Correct 18 ms 4300 KB Output is correct
49 Correct 20 ms 4300 KB Output is correct
50 Correct 22 ms 4348 KB Output is correct
51 Correct 24 ms 4316 KB Output is correct
52 Correct 10 ms 2372 KB Output is correct
53 Correct 6 ms 1508 KB Output is correct
54 Correct 15 ms 3592 KB Output is correct
55 Correct 20 ms 4432 KB Output is correct
56 Correct 28 ms 3948 KB Output is correct
57 Correct 15 ms 3828 KB Output is correct
58 Correct 16 ms 3916 KB Output is correct
59 Correct 19 ms 4044 KB Output is correct
60 Correct 18 ms 3976 KB Output is correct
61 Correct 72 ms 17864 KB Output is correct
62 Correct 66 ms 17824 KB Output is correct
63 Correct 76 ms 18312 KB Output is correct
64 Correct 98 ms 20436 KB Output is correct
65 Correct 97 ms 20804 KB Output is correct
66 Correct 100 ms 20736 KB Output is correct
67 Correct 99 ms 16596 KB Output is correct
68 Correct 46 ms 8516 KB Output is correct
69 Correct 87 ms 16916 KB Output is correct
70 Correct 97 ms 20784 KB Output is correct
71 Correct 79 ms 17896 KB Output is correct
72 Correct 95 ms 18248 KB Output is correct
73 Correct 88 ms 18848 KB Output is correct
74 Correct 87 ms 19268 KB Output is correct
75 Correct 86 ms 19268 KB Output is correct