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Submission #1006224

# Submission time Handle Problem Language Result Execution time Memory
1006224 2024-06-23T14:54:01 Z andecaandeci Bigger segments (IZhO19_segments) C++17
100 / 100
 56 ms 20620 KB 
#include <bits/stdc++.h>
using namespace std;
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
typedef long long ll;
const ll INF = 1e18;
const ll MOD = 1e9 + 7;
const ll MAXN = 1e6 + 5;
const ll LOG = 31;
#define vll vector <ll>
#define pll pair <ll, ll>
#define fi first
#define se second
#define endl '\n'

ll n, m, d;
ll a [MAXN], pf [MAXN], pos [MAXN], dp [MAXN];

ll lb(ll x){
    ll l = 1, r = n, ret = n+1;
    while(l <= r){
        ll mid = (l+r)/2;
        if(pf[mid] >= x){
            ret = mid;
            r = mid - 1;
        }
        else{
            l = mid + 1;
        }
    }
    return ret;
}

void solve(){
    cin >> n;
    for(ll i = 1; i <= n; i++){
        cin >> a[i];
        pf[i] = pf[i-1] + a[i];
    }
    for(ll i = 1; i <= n; i++){
        pos[i] = max(pos[i], pos[i-1]);
        dp[i] = dp[pos[i]] + 1;
        pos[lb(2*pf[i]-pf[pos[i]])] = i;
    }
    cout << dp[n] << endl;
}

int main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    // ll t; cin >> t;
    // while(t--){
        solve();
    // }
}

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 0 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 0 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 0 ms 2396 KB Output is correct
10 Correct 0 ms 2396 KB Output is correct
11 Correct 0 ms 2396 KB Output is correct
12 Correct 0 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 0 ms 2392 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 0 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 0 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 0 ms 2396 KB Output is correct
10 Correct 0 ms 2396 KB Output is correct
11 Correct 0 ms 2396 KB Output is correct
12 Correct 0 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 0 ms 2392 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 0 ms 2396 KB Output is correct
17 Correct 0 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 0 ms 2396 KB Output is correct
20 Correct 0 ms 2396 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 0 ms 2516 KB Output is correct
23 Correct 0 ms 2396 KB Output is correct
24 Correct 1 ms 2396 KB Output is correct
25 Correct 0 ms 2396 KB Output is correct
26 Correct 1 ms 2396 KB Output is correct
27 Correct 0 ms 2396 KB Output is correct
28 Correct 1 ms 2396 KB Output is correct
29 Correct 1 ms 2396 KB Output is correct
30 Correct 0 ms 2396 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 0 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 0 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 0 ms 2396 KB Output is correct
10 Correct 0 ms 2396 KB Output is correct
11 Correct 0 ms 2396 KB Output is correct
12 Correct 0 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 0 ms 2392 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 0 ms 2396 KB Output is correct
17 Correct 0 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 0 ms 2396 KB Output is correct
20 Correct 0 ms 2396 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 0 ms 2516 KB Output is correct
23 Correct 0 ms 2396 KB Output is correct
24 Correct 1 ms 2396 KB Output is correct
25 Correct 0 ms 2396 KB Output is correct
26 Correct 1 ms 2396 KB Output is correct
27 Correct 0 ms 2396 KB Output is correct
28 Correct 1 ms 2396 KB Output is correct
29 Correct 1 ms 2396 KB Output is correct
30 Correct 0 ms 2396 KB Output is correct
31 Correct 1 ms 2396 KB Output is correct
32 Correct 1 ms 2396 KB Output is correct
33 Correct 1 ms 2396 KB Output is correct
34 Correct 1 ms 2396 KB Output is correct
35 Correct 1 ms 2396 KB Output is correct
36 Correct 1 ms 2396 KB Output is correct
37 Correct 1 ms 2396 KB Output is correct
38 Correct 1 ms 2396 KB Output is correct
39 Correct 1 ms 2396 KB Output is correct
40 Correct 1 ms 2396 KB Output is correct
41 Correct 1 ms 2396 KB Output is correct
42 Correct 1 ms 2476 KB Output is correct
43 Correct 1 ms 2396 KB Output is correct
44 Correct 1 ms 2396 KB Output is correct
45 Correct 1 ms 2396 KB Output is correct

Subtask #4
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 0 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 0 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 0 ms 2396 KB Output is correct
10 Correct 0 ms 2396 KB Output is correct
11 Correct 0 ms 2396 KB Output is correct
12 Correct 0 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 0 ms 2392 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 0 ms 2396 KB Output is correct
17 Correct 0 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 0 ms 2396 KB Output is correct
20 Correct 0 ms 2396 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 0 ms 2516 KB Output is correct
23 Correct 0 ms 2396 KB Output is correct
24 Correct 1 ms 2396 KB Output is correct
25 Correct 0 ms 2396 KB Output is correct
26 Correct 1 ms 2396 KB Output is correct
27 Correct 0 ms 2396 KB Output is correct
28 Correct 1 ms 2396 KB Output is correct
29 Correct 1 ms 2396 KB Output is correct
30 Correct 0 ms 2396 KB Output is correct
31 Correct 1 ms 2396 KB Output is correct
32 Correct 1 ms 2396 KB Output is correct
33 Correct 1 ms 2396 KB Output is correct
34 Correct 1 ms 2396 KB Output is correct
35 Correct 1 ms 2396 KB Output is correct
36 Correct 1 ms 2396 KB Output is correct
37 Correct 1 ms 2396 KB Output is correct
38 Correct 1 ms 2396 KB Output is correct
39 Correct 1 ms 2396 KB Output is correct
40 Correct 1 ms 2396 KB Output is correct
41 Correct 1 ms 2396 KB Output is correct
42 Correct 1 ms 2476 KB Output is correct
43 Correct 1 ms 2396 KB Output is correct
44 Correct 1 ms 2396 KB Output is correct
45 Correct 1 ms 2396 KB Output is correct
46 Correct 6 ms 8028 KB Output is correct
47 Correct 8 ms 8028 KB Output is correct
48 Correct 11 ms 8028 KB Output is correct
49 Correct 11 ms 8028 KB Output is correct
50 Correct 11 ms 8060 KB Output is correct
51 Correct 11 ms 8028 KB Output is correct
52 Correct 6 ms 5468 KB Output is correct
53 Correct 4 ms 5212 KB Output is correct
54 Correct 8 ms 8156 KB Output is correct
55 Correct 11 ms 8028 KB Output is correct
56 Correct 14 ms 7948 KB Output is correct
57 Correct 10 ms 8028 KB Output is correct
58 Correct 8 ms 8028 KB Output is correct
59 Correct 10 ms 8028 KB Output is correct
60 Correct 11 ms 8100 KB Output is correct

Subtask #5
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 0 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 0 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 0 ms 2396 KB Output is correct
10 Correct 0 ms 2396 KB Output is correct
11 Correct 0 ms 2396 KB Output is correct
12 Correct 0 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 0 ms 2392 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 0 ms 2396 KB Output is correct
17 Correct 0 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 0 ms 2396 KB Output is correct
20 Correct 0 ms 2396 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 0 ms 2516 KB Output is correct
23 Correct 0 ms 2396 KB Output is correct
24 Correct 1 ms 2396 KB Output is correct
25 Correct 0 ms 2396 KB Output is correct
26 Correct 1 ms 2396 KB Output is correct
27 Correct 0 ms 2396 KB Output is correct
28 Correct 1 ms 2396 KB Output is correct
29 Correct 1 ms 2396 KB Output is correct
30 Correct 0 ms 2396 KB Output is correct
31 Correct 1 ms 2396 KB Output is correct
32 Correct 1 ms 2396 KB Output is correct
33 Correct 1 ms 2396 KB Output is correct
34 Correct 1 ms 2396 KB Output is correct
35 Correct 1 ms 2396 KB Output is correct
36 Correct 1 ms 2396 KB Output is correct
37 Correct 1 ms 2396 KB Output is correct
38 Correct 1 ms 2396 KB Output is correct
39 Correct 1 ms 2396 KB Output is correct
40 Correct 1 ms 2396 KB Output is correct
41 Correct 1 ms 2396 KB Output is correct
42 Correct 1 ms 2476 KB Output is correct
43 Correct 1 ms 2396 KB Output is correct
44 Correct 1 ms 2396 KB Output is correct
45 Correct 1 ms 2396 KB Output is correct
46 Correct 6 ms 8028 KB Output is correct
47 Correct 8 ms 8028 KB Output is correct
48 Correct 11 ms 8028 KB Output is correct
49 Correct 11 ms 8028 KB Output is correct
50 Correct 11 ms 8060 KB Output is correct
51 Correct 11 ms 8028 KB Output is correct
52 Correct 6 ms 5468 KB Output is correct
53 Correct 4 ms 5212 KB Output is correct
54 Correct 8 ms 8156 KB Output is correct
55 Correct 11 ms 8028 KB Output is correct
56 Correct 14 ms 7948 KB Output is correct
57 Correct 10 ms 8028 KB Output is correct
58 Correct 8 ms 8028 KB Output is correct
59 Correct 10 ms 8028 KB Output is correct
60 Correct 11 ms 8100 KB Output is correct
61 Correct 28 ms 20560 KB Output is correct
62 Correct 32 ms 20564 KB Output is correct
63 Correct 42 ms 20560 KB Output is correct
64 Correct 53 ms 20536 KB Output is correct
65 Correct 55 ms 20560 KB Output is correct
66 Correct 52 ms 20564 KB Output is correct
67 Correct 43 ms 18516 KB Output is correct
68 Correct 23 ms 12376 KB Output is correct
69 Correct 37 ms 20560 KB Output is correct
70 Correct 56 ms 20564 KB Output is correct
71 Correct 43 ms 20560 KB Output is correct
72 Correct 39 ms 20572 KB Output is correct
73 Correct 48 ms 20560 KB Output is correct
74 Correct 49 ms 20564 KB Output is correct
75 Correct 50 ms 20620 KB Output is correct