oj.uz

Submission #873893

# Submission time Handle Problem Language Result Execution time Memory
873893 2023-11-16T02:33:17 Z noiaint Bigger segments (IZhO19_segments) C++17
100 / 100
 68 ms 16040 KB 
#include <bits/stdc++.h>

using namespace std;

#define file ""

#define mp make_pair
#define fi first
#define se second
#define all(x) x.begin(), x.end()

#define getbit(x, i) (((x) >> (i)) & 1)
#define bit(x) (1LL << (x))
#define popcount __builtin_popcountll

mt19937_64 rd(chrono::steady_clock::now().time_since_epoch().count());
int rand(int l, int r) {
    return l + rd() % (r - l + 1);
}

const int N = 1e6 + 5;
const int mod = (int)1e9 + 7; // 998244353;
const int lg = 25; // lg + 1
const int oo = 1e9;
const long long ooo = 1e18;

template<class X, class Y> bool mini(X &a, Y b) {
    return a > b ? (a = b, true) : false;
}
template<class X, class Y> bool maxi(X &a, Y b) {
    return a < b ? (a = b, true) : false;
}
void add(int &a, int b) {
    a += b;
    if (a >= mod) a -= mod;
    if (a < 0) a += mod;
}

int n;
long long a[N];
int f[N], pos[N];

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);

    // freopen(file".inp", "r", stdin);
    // freopen(file".out", "w", stdout);

    cin >> n;
    for (int i = 1; i <= n; ++i) {
    	cin >> a[i];
    	a[i] += a[i - 1];
    }

    for (int i = 1; i <= n; ++i) {
    	pos[i] = max(pos[i - 1], pos[i]);
    	f[i] = f[pos[i]] + 1;
    	int l = i, r = n, nxt = 0;
    	while (l <= r) {
    		int mid = (l + r) / 2;
    		if (a[mid] - a[i] >= a[i] - a[pos[i]]) {
    			nxt = mid;
    			r = mid - 1;
    		} else l = mid + 1;
    	}
    	pos[nxt] = i;
    }

    cout << f[n];

    return 0;
}

/*
s[i] - s[j] >= s[j] - s[k] -> binary search
*/

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 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 0 ms 2516 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 0 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 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 0 ms 2516 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 0 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2500 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2516 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 1 ms 2540 KB Output is correct
23 Correct 1 ms 2396 KB Output is correct
24 Correct 1 ms 2512 KB Output is correct
25 Correct 1 ms 2652 KB Output is correct
26 Correct 1 ms 2396 KB Output is correct
27 Correct 1 ms 2396 KB Output is correct
28 Correct 1 ms 2648 KB Output is correct
29 Correct 1 ms 2512 KB Output is correct
30 Correct 1 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 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 0 ms 2516 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 0 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2500 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2516 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 1 ms 2540 KB Output is correct
23 Correct 1 ms 2396 KB Output is correct
24 Correct 1 ms 2512 KB Output is correct
25 Correct 1 ms 2652 KB Output is correct
26 Correct 1 ms 2396 KB Output is correct
27 Correct 1 ms 2396 KB Output is correct
28 Correct 1 ms 2648 KB Output is correct
29 Correct 1 ms 2512 KB Output is correct
30 Correct 1 ms 2396 KB Output is correct
31 Correct 1 ms 2392 KB Output is correct
32 Correct 1 ms 2544 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 2520 KB Output is correct
43 Correct 1 ms 2396 KB Output is correct
44 Correct 1 ms 2528 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 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 0 ms 2516 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 0 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2500 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2516 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 1 ms 2540 KB Output is correct
23 Correct 1 ms 2396 KB Output is correct
24 Correct 1 ms 2512 KB Output is correct
25 Correct 1 ms 2652 KB Output is correct
26 Correct 1 ms 2396 KB Output is correct
27 Correct 1 ms 2396 KB Output is correct
28 Correct 1 ms 2648 KB Output is correct
29 Correct 1 ms 2512 KB Output is correct
30 Correct 1 ms 2396 KB Output is correct
31 Correct 1 ms 2392 KB Output is correct
32 Correct 1 ms 2544 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 2520 KB Output is correct
43 Correct 1 ms 2396 KB Output is correct
44 Correct 1 ms 2528 KB Output is correct
45 Correct 1 ms 2396 KB Output is correct
46 Correct 8 ms 7772 KB Output is correct
47 Correct 11 ms 9564 KB Output is correct
48 Correct 11 ms 9820 KB Output is correct
49 Correct 15 ms 10076 KB Output is correct
50 Correct 11 ms 10076 KB Output is correct
51 Correct 14 ms 10184 KB Output is correct
52 Correct 6 ms 5196 KB Output is correct
53 Correct 4 ms 2908 KB Output is correct
54 Correct 11 ms 9308 KB Output is correct
55 Correct 11 ms 10076 KB Output is correct
56 Correct 8 ms 9560 KB Output is correct
57 Correct 9 ms 9564 KB Output is correct
58 Correct 9 ms 9564 KB Output is correct
59 Correct 9 ms 9564 KB Output is correct
60 Correct 9 ms 9800 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 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 0 ms 2516 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 0 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2500 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2516 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 1 ms 2540 KB Output is correct
23 Correct 1 ms 2396 KB Output is correct
24 Correct 1 ms 2512 KB Output is correct
25 Correct 1 ms 2652 KB Output is correct
26 Correct 1 ms 2396 KB Output is correct
27 Correct 1 ms 2396 KB Output is correct
28 Correct 1 ms 2648 KB Output is correct
29 Correct 1 ms 2512 KB Output is correct
30 Correct 1 ms 2396 KB Output is correct
31 Correct 1 ms 2392 KB Output is correct
32 Correct 1 ms 2544 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 2520 KB Output is correct
43 Correct 1 ms 2396 KB Output is correct
44 Correct 1 ms 2528 KB Output is correct
45 Correct 1 ms 2396 KB Output is correct
46 Correct 8 ms 7772 KB Output is correct
47 Correct 11 ms 9564 KB Output is correct
48 Correct 11 ms 9820 KB Output is correct
49 Correct 15 ms 10076 KB Output is correct
50 Correct 11 ms 10076 KB Output is correct
51 Correct 14 ms 10184 KB Output is correct
52 Correct 6 ms 5196 KB Output is correct
53 Correct 4 ms 2908 KB Output is correct
54 Correct 11 ms 9308 KB Output is correct
55 Correct 11 ms 10076 KB Output is correct
56 Correct 8 ms 9560 KB Output is correct
57 Correct 9 ms 9564 KB Output is correct
58 Correct 9 ms 9564 KB Output is correct
59 Correct 9 ms 9564 KB Output is correct
60 Correct 9 ms 9800 KB Output is correct
61 Correct 50 ms 12848 KB Output is correct
62 Correct 42 ms 13136 KB Output is correct
63 Correct 53 ms 13392 KB Output is correct
64 Correct 68 ms 15672 KB Output is correct
65 Correct 48 ms 15940 KB Output is correct
66 Correct 54 ms 16040 KB Output is correct
67 Correct 46 ms 14932 KB Output is correct
68 Correct 25 ms 10932 KB Output is correct
69 Correct 39 ms 12116 KB Output is correct
70 Correct 50 ms 15964 KB Output is correct
71 Correct 50 ms 12996 KB Output is correct
72 Correct 41 ms 13500 KB Output is correct
73 Correct 43 ms 13656 KB Output is correct
74 Correct 53 ms 14676 KB Output is correct
75 Correct 44 ms 14496 KB Output is correct