CSES - Datatähti Open 2019 - Results
Submission details
Task:Sunset
Sender:inverted-chan
Submission time:2019-01-18 19:32:57
Language:C++
Status:READY
Result:100
Feedback
groupverdictscore
#1ACCEPTED16
#2ACCEPTED35
#3ACCEPTED49
Test results
testverdicttimegroup
#1ACCEPTED0.03 s1details
#2ACCEPTED0.02 s1details
#3ACCEPTED0.01 s1details
#4ACCEPTED0.02 s1details
#5ACCEPTED0.01 s1details
#6ACCEPTED0.02 s1details
#7ACCEPTED0.02 s1details
#8ACCEPTED0.02 s1details
#9ACCEPTED0.02 s1details
#10ACCEPTED0.02 s1details
#11ACCEPTED0.02 s1details
#12ACCEPTED0.02 s1details
#13ACCEPTED0.02 s1details
#14ACCEPTED0.02 s1details
#15ACCEPTED0.01 s1details
#16ACCEPTED0.03 s1details
#17ACCEPTED0.02 s1details
#18ACCEPTED0.03 s2details
#19ACCEPTED0.19 s2details
#20ACCEPTED0.18 s2details
#21ACCEPTED0.15 s2details
#22ACCEPTED0.15 s2details
#23ACCEPTED0.16 s2details
#24ACCEPTED0.16 s2details
#25ACCEPTED0.09 s2details
#26ACCEPTED0.19 s2details
#27ACCEPTED0.20 s2details
#28ACCEPTED0.02 s2details
#29ACCEPTED0.15 s2details
#30ACCEPTED0.15 s2details
#31ACCEPTED0.15 s2details
#32ACCEPTED0.01 s3details
#33ACCEPTED0.20 s3details
#34ACCEPTED0.21 s3details
#35ACCEPTED0.19 s3details
#36ACCEPTED0.15 s3details
#37ACCEPTED0.16 s3details
#38ACCEPTED0.16 s3details
#39ACCEPTED0.17 s3details
#40ACCEPTED0.17 s3details
#41ACCEPTED0.20 s3details
#42ACCEPTED0.09 s3details
#43ACCEPTED0.19 s3details
#44ACCEPTED0.19 s3details
#45ACCEPTED0.16 s3details
#46ACCEPTED0.16 s3details
#47ACCEPTED0.16 s3details
#48ACCEPTED0.16 s3details
#49ACCEPTED0.16 s3details
#50ACCEPTED0.16 s3details
#51ACCEPTED0.15 s3details
#52ACCEPTED0.16 s3details
#53ACCEPTED0.16 s3details
#54ACCEPTED0.17 s3details

Code

#pragma GCC target("tune=native")

#include <bits/stdc++.h>

using namespace std;
using i32 = int32_t;
using u32 = uint32_t;
using i64 = int64_t;

// without update query
template<class value_t, class result_t, class combine_t, class get_t>
class seg_tree_t {
private:
    inline u32 left(u32 x) {
        return x << 1;
    }
    inline u32 right(u32 x) {
        return left(x) + 1;
    }
    inline u32 mid(u32 l, u32 r) {
        return l + (r - l) / 2;
    }

protected:
    u32 n;
    result_t none;
    vector<result_t> t;
    combine_t combine;
    get_t get;

    result_t query(u32 v, u32 L, u32 R, u32 l, u32 r) {
        if (l > R || r < L) {
            return none;
        }
        if (L >= l && R <= r) {
            return t[v];
        }

        u32 M = mid(L, R);
        return combine(query(left(v), L, M, l, r), query(right(v), M + 1, R, l, r));
    }

public:
    seg_tree_t(u32 n, result_t none, combine_t combine, get_t get) {
        this->n = n;
        this->none = none;
        this->get = get;
        this->combine = combine;
        this->t.resize(this->n << 2);
        this->build(1, 0, n - 1);
    }

    void build(u32 v, u32 L, u32 R) {
        if (L == R) {
            t[v] = get(L);
        } else {
            u32 M = mid(L, R);
            build(left(v), L, M);
            build(right(v), M + 1, R);
            t[v] = combine(t[left(v)], t[right(v)]);
        }
    }

    result_t query(u32 l, u32 r) {
        return query(1, 0, n - 1, l, r);
    }
};

const i32 maxn = 1e5 + 1;

i32 n, q;
i32 a[maxn];
i32 d[maxn];
i32 r[maxn];

int main() {
    cin.tie(nullptr)->sync_with_stdio(false);

    cin >> n >> q;

    for (i32 i = 0; i < n; ++i) {
        cin >> a[i];
    }

    i32 k = n;

    for (i32 i = n - 1; i >= 0; --i) {
        while (n - k > 0 && a[i] >= a[r[k]]) {
            ++k;
        }
        d[i] = d[r[k]] + 1;
        --k;
        r[k] = i;
    }

    seg_tree_t<u32, u32, function<u32 (u32, u32)>, function<u32 (u32)>> t = {(u32)n, (u32)n,
        [] (u32 l, u32 r) -> u32 {
            if (a[r] > a[l]) {
                return r;
            } else {
                return l;
            }
        },

        [] (u32 l) -> u32 {
            return l;
        }
    };

    while (q--) {
        i32 l, r;
        cin >> l >> r;

        cout << d[l - 1] + 1 - d[t.query(l - 1, r - 1)] << '\n';
    }

    cout << flush;
}

Test details

Test 1

Group: 1

Verdict: ACCEPTED

input
5 3
4 1 2 2 3
1 5
2 5
3 4

correct output
1
3
1

user output
1
3
1

Test 2

Group: 1

Verdict: ACCEPTED

input
1 1
1
1 1

correct output
1

user output
1

Test 3

Group: 1

Verdict: ACCEPTED

input
2 3
1 1000000000
1 1
2 2
1 2

correct output
1
1
2

user output
1
1
2

Test 4

Group: 1

Verdict: ACCEPTED

input
2 3
1000000000 1
1 1
2 2
1 2

correct output
1
1
1

user output
1
1
1

Test 5

Group: 1

Verdict: ACCEPTED

input
2000 2000
387547790 498212511 224378606 ...

correct output
14
10
10
3
7
...

user output
14
10
10
3
7
...

Test 6

Group: 1

Verdict: ACCEPTED

input
2000 2000
13604803 27447643 34139694 383...

correct output
198
43
38
58
50
...

user output
198
43
38
58
50
...

Test 7

Group: 1

Verdict: ACCEPTED

input
2000 2000
387547790 498212511 224378606 ...

correct output
1
1
1
1
1
...

user output
1
1
1
1
1
...

Test 8

Group: 1

Verdict: ACCEPTED

input
2000 2000
409666302 646936685 583741760 ...

correct output
8
9
12
8
11
...

user output
8
9
12
8
11
...

Test 9

Group: 1

Verdict: ACCEPTED

input
2000 2000
1000000000 1000000000 10000000...

correct output
1
1
1
1
1
...

user output
1
1
1
1
1
...

Test 10

Group: 1

Verdict: ACCEPTED

input
2000 2000
785263 793567 1573404 1750090 ...

correct output
2000
2000
2000
2000
2000
...

user output
2000
2000
2000
2000
2000
...

Test 11

Group: 1

Verdict: ACCEPTED

input
2000 2000
785263 793567 1573404 1750090 ...

correct output
1960
1947
1963
1942
1944
...

user output
1960
1947
1963
1942
1944
...

Test 12

Group: 1

Verdict: ACCEPTED

input
1999 2000
129087461 494922181 482953911 ...

correct output
10
6
6
7
7
...

user output
10
6
6
7
7
...

Test 13

Group: 1

Verdict: ACCEPTED

input
2000 2000
409666302 646936685 583741760 ...

correct output
8
7
6
7
7
...

user output
8
7
6
7
7
...

Test 14

Group: 1

Verdict: ACCEPTED

input
2000 2000
44989 1437234 1640005 1765235 ...

correct output
1233
1389
1026
150
796
...

user output
1233
1389
1026
150
796
...

Test 15

Group: 1

Verdict: ACCEPTED

input
2000 2000
2 1 4 3 6 5 8 7 10 9 12 11 14 ...

correct output
988
994
981
979
973
...

user output
988
994
981
979
973
...

Test 16

Group: 1

Verdict: ACCEPTED

input
2000 2000
1999 2000 1997 1998 1995 1996 ...

correct output
1
2
1
1
2
...

user output
1
2
1
1
2
...

Test 17

Group: 1

Verdict: ACCEPTED

input
2000 2000
2 1 4 3 5 4 5 2 3 1 2 1 4 3 5 ...

correct output
2
1
1
2
3
...

user output
2
1
1
2
3
...

Test 18

Group: 2

Verdict: ACCEPTED

input
1 1
1
1 1

correct output
1

user output
1

Test 19

Group: 2

Verdict: ACCEPTED

input
100000 200000
32 22 35 59 37 2 5 5 79 53 22 ...

correct output
4
9
6
5
4
...

user output
4
9
6
5
4
...

Test 20

Group: 2

Verdict: ACCEPTED

input
100000 200000
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...

correct output
89
35
59
25
12
...

user output
89
35
59
25
12
...

Test 21

Group: 2

Verdict: ACCEPTED

input
100000 200000
32 22 35 59 37 2 5 5 79 53 22 ...

correct output
1
1
1
1
1
...

user output
1
1
1
1
1
...

Test 22

Group: 2

Verdict: ACCEPTED

input
100000 200000
72 58 92 12 32 29 55 87 6 49 5...

correct output
5
7
5
6
2
...

user output
5
7
5
6
2
...

Test 23

Group: 2

Verdict: ACCEPTED

input
100000 200000
100 100 100 100 100 100 100 10...

correct output
1
1
1
1
1
...

user output
1
1
1
1
1
...

Test 24

Group: 2

Verdict: ACCEPTED

input
100000 200000
72 58 92 12 32 29 55 87 6 49 5...

correct output
4
7
6
7
4
...

user output
4
7
6
7
4
...

Test 25

Group: 2

Verdict: ACCEPTED

input
100000 200000
72 58 92 12 32 29 55 87 6 49 5...

correct output
5
5
5
5
5
...

user output
5
5
5
5
5
...

Test 26

Group: 2

Verdict: ACCEPTED

input
99999 200000
20 47 84 90 88 63 39 16 74 19 ...

correct output
5
7
6
3
3
...

user output
5
7
6
3
3
...

Test 27

Group: 2

Verdict: ACCEPTED

input
100000 200000
72 58 92 12 32 29 55 87 6 49 5...

correct output
6
4
9
2
5
...

user output
6
4
9
2
5
...

Test 28

Group: 2

Verdict: ACCEPTED

input
5 1
4 1 5 6 9
1 3

correct output
2

user output
2

Test 29

Group: 2

Verdict: ACCEPTED

input
100000 200000
2 1 4 3 6 5 8 7 10 9 12 11 14 ...

correct output
44
4
27
46
29
...

user output
44
4
27
46
29
...

Test 30

Group: 2

Verdict: ACCEPTED

input
100000 200000
2 1 4 3 5 4 5 2 3 1 2 1 4 3 5 ...

correct output
3
3
3
3
2
...

user output
3
3
3
3
2
...

Test 31

Group: 2

Verdict: ACCEPTED

input
100000 200000
2 1 4 3 6 5 8 7 10 9 12 11 14 ...

correct output
39
10
37
20
43
...

user output
39
10
37
20
43
...

Test 32

Group: 3

Verdict: ACCEPTED

input
1 1
1
1 1

correct output
1

user output
1

Test 33

Group: 3

Verdict: ACCEPTED

input
100000 200000
994198482 687493351 579440176 ...

correct output
8
6
8
10
5
...

user output
8
6
8
10
5
...

Test 34

Group: 3

Verdict: ACCEPTED

input
100000 200000
138644593 592364551 919805093 ...

correct output
10
11
13
7
12
...

user output
10
11
13
7
12
...

Test 35

Group: 3

Verdict: ACCEPTED

input
100000 200000
10770 195579 349462 442791 450...

correct output
2468
1986
2632
129
4010
...

user output
2468
1986
2632
129
4010
...

Test 36

Group: 3

Verdict: ACCEPTED

input
100000 200000
994198482 687493351 579440176 ...

correct output
1
2
1
2
1
...

user output
1
2
1
2
1
...

Test 37

Group: 3

Verdict: ACCEPTED

input
100000 200000
398809514 622635167 133376912 ...

correct output
15
13
16
11
17
...

user output
15
13
16
11
17
...

Test 38

Group: 3

Verdict: ACCEPTED

input
100000 200000
1000000000 1000000000 10000000...

correct output
1
1
1
1
1
...

user output
1
1
1
1
1
...

Test 39

Group: 3

Verdict: ACCEPTED

input
100000 200000
398809514 622635167 133376912 ...

correct output
10
16
7
18
10
...

user output
10
16
7
18
10
...

Test 40

Group: 3

Verdict: ACCEPTED

input
100000 200000
11465 15800 19042 19282 20348 ...

correct output
99542
99728
99391
99890
99716
...

user output
99542
99728
99391
99890
99716
...

Test 41

Group: 3

Verdict: ACCEPTED

input
99999 200000
587542096 890780320 258438313 ...

correct output
8
6
11
11
17
...

user output
8
6
11
11
17
...

Test 42

Group: 3

Verdict: ACCEPTED

input
100000 200000
11283 24634 28852 37453 37625 ...

correct output
100000
100000
100000
100000
100000
...

user output
100000
100000
100000
100000
100000
...

Test 43

Group: 3

Verdict: ACCEPTED

input
100000 200000
398809514 622635167 133376912 ...

correct output
13
13
10
15
15
...

user output
13
13
10
15
15
...

Test 44

Group: 3

Verdict: ACCEPTED

input
100000 200000
11465 15800 19042 19282 20348 ...

correct output
36112
6013
51073
8123
82052
...

user output
36112
6013
51073
8123
82052
...

Test 45

Group: 3

Verdict: ACCEPTED

input
100000 200000
1 2 3 4 5 6 7 8 9 10 11 12 13 ...

correct output
99407
99529
99590
99589
99679
...

user output
99407
99529
99590
99589
99679
...

Test 46

Group: 3

Verdict: ACCEPTED

input
100000 200000
100000 99999 99998 99997 99996...

correct output
1
1
1
1
1
...

user output
1
1
1
1
1
...

Test 47

Group: 3

Verdict: ACCEPTED

input
100000 200000
2 1 4 3 6 5 8 7 10 9 12 11 14 ...

correct output
49946
49703
49786
49864
49720
...

user output
49946
49703
49786
49864
49720
...

Test 48

Group: 3

Verdict: ACCEPTED

input
100000 200000
99999 100000 99997 99998 99995...

correct output
2
1
2
2
1
...

user output
2
1
2
2
1
...

Test 49

Group: 3

Verdict: ACCEPTED

input
100000 200000
2 1 4 3 5 4 5 2 3 1 2 1 4 3 5 ...

correct output
3
3
3
3
2
...

user output
3
3
3
3
2
...

Test 50

Group: 3

Verdict: ACCEPTED

input
100000 200000
2 1 4 3 6 5 8 7 10 9 12 11 14 ...

correct output
19
23
2
21
4
...

user output
19
23
2
21
4
...

Test 51

Group: 3

Verdict: ACCEPTED

input
100000 200000
2 1 4 3 6 5 8 7 10 9 12 11 14 ...

correct output
112
237
49
141
57
...

user output
112
237
49
141
57
...

Test 52

Group: 3

Verdict: ACCEPTED

input
100000 200000
2 1 4 3 6 5 8 7 10 9 12 11 14 ...

correct output
2457
2199
2351
2450
2475
...

user output
2457
2199
2351
2450
2475
...

Test 53

Group: 3

Verdict: ACCEPTED

input
100000 200000
2 1 4 3 6 5 8 7 10 9 12 11 14 ...

correct output
24841
24973
24865
24823
24969
...

user output
24841
24973
24865
24823
24969
...

Test 54

Group: 3

Verdict: ACCEPTED

input
100000 200000
49999 50000 49997 49998 49995 ...

correct output
210
1
2
2
1
...

user output
210
1
2
2
1
...