CSES - Datatähti Open 2019 - Results
Submission details
Task:Binary tree
Sender:ruhanhabib39
Submission time:2019-01-19 16:18:49
Language:C++
Status:READY
Result:100
Feedback
groupverdictscore
#1ACCEPTED23
#2ACCEPTED26
#3ACCEPTED51
Test results
testverdicttimegroup
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Compiler report

input/code.cpp: In function 'int main()':
input/code.cpp:70:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%lld%d", &n, &m);
    ~~~~~^~~~~~~~~~~~~~~~~~
input/code.cpp:73:12: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
       scanf("%lld", &a);
       ~~~~~^~~~~~~~~~~~

Code

#include <bits/stdc++.h>
using namespace std;

const long long INF = numeric_limits<long long>::max();
const long long MOD = 1e9 + 7;
const int MAXN = 60;

long long n;
vector<long long> forbidden, has_forbidden;

void add(long long a) {
   forbidden.push_back(a);
   for(; a > 1; a >>= 1LL) {
      has_forbidden.push_back(a);
   }
}

void make_set(vector<long long>& vec) {
   sort(vec.begin(), vec.end());
   vec.erase(unique(vec.begin(), vec.end()), vec.end());
}

bool has(const vector<long long>& vec, long long a) {
   return binary_search(vec.cbegin(), vec.cend(), a);
}

long long pw[MAXN + 10];

long long calc(long long S) {
   long long res = 0;

   queue<long long> q; q.push(S);
   auto it = forbidden.begin();
   auto jt = has_forbidden.begin();
   long long level = 1;

   while(!q.empty()) {
      long long u = q.front(); q.pop();

      while((1LL << level) <= u) level++;

      while(*it < u) {
         ++it;
      }
      while(*jt < u) {
         ++jt;
      }
      if(*it == u) { // u is forbidden node
         // ignore this node
      } else if(*jt != u) { // u doesn't have forbidden nodes in subtree
         res = (res + pw[n - level]) % MOD;
      } else {
         q.push(u << 1LL);
         q.push((u << 1LL) | 1LL);
      }
   }
   return res;
}

void init() {
   pw[0] = 1;
   for(int p = 1; p <= MAXN; p++) {
      pw[p] = pw[p-1] * 2LL % MOD;
   }
}

int main() {
   init();
   int m;
   scanf("%lld%d", &n, &m);
   for(int i = 0; i < m; i++) {
      long long a;
      scanf("%lld", &a);
      add(a);
   }
   forbidden.push_back(INF);
   has_forbidden.push_back(INF);
   make_set(forbidden);
   make_set(has_forbidden);

   long long res = calc(2) * 1LL * calc(3) % MOD;
   res = res*2 % MOD;
   printf("%lld\n", res);
}

Test details

Test 1

Group: 1

Verdict: ACCEPTED

input
4 3
10
5
13

correct output
12

user output
12

Test 2

Group: 1

Verdict: ACCEPTED

input
2 0

correct output
2

user output
2

Test 3

Group: 1

Verdict: ACCEPTED

input
2 1
2

correct output
0

user output
0

Test 4

Group: 1

Verdict: ACCEPTED

input
2 1
3

correct output
0

user output
0

Test 5

Group: 1

Verdict: ACCEPTED

input
2 2
2
3

correct output
0

user output
0

Test 6

Group: 1

Verdict: ACCEPTED

input
6 0

correct output
512

user output
512

Test 7

Group: 1

Verdict: ACCEPTED

input
6 1
29

correct output
448

user output
448

Test 8

Group: 1

Verdict: ACCEPTED

input
6 1
63

correct output
480

user output
480

Test 9

Group: 1

Verdict: ACCEPTED

input
6 10
50
63
56
5
...

correct output
132

user output
132

Test 10

Group: 1

Verdict: ACCEPTED

input
6 10
25
57
62
42
...

correct output
162

user output
162

Test 11

Group: 1

Verdict: ACCEPTED

input
6 10
14
26
34
42
...

correct output
126

user output
126

Test 12

Group: 1

Verdict: ACCEPTED

input
6 10
21
60
23
59
...

correct output
128

user output
128

Test 13

Group: 1

Verdict: ACCEPTED

input
6 10
8
30
32
16
...

correct output
0

user output
0

Test 14

Group: 1

Verdict: ACCEPTED

input
6 20
46
39
55
24
...

correct output
48

user output
48

Test 15

Group: 1

Verdict: ACCEPTED

input
6 25
36
23
27
33
...

correct output
4

user output
4

Test 16

Group: 1

Verdict: ACCEPTED

input
6 62
42
11
4
61
...

correct output
0

user output
0

Test 17

Group: 1

Verdict: ACCEPTED

input
6 32
62
38
57
35
...

correct output
0

user output
0

Test 18

Group: 1

Verdict: ACCEPTED

input
6 21
38
51
47
35
...

correct output
60

user output
60

Test 19

Group: 1

Verdict: ACCEPTED

input
6 31
59
15
3
26
...

correct output
0

user output
0

Test 20

Group: 1

Verdict: ACCEPTED

input
6 14
13
53
55
26
...

correct output
256

user output
256

Test 21

Group: 1

Verdict: ACCEPTED

input
5 10
5
17
21
7
...

correct output
6

user output
6

Test 22

Group: 1

Verdict: ACCEPTED

input
6 5
38
18
31
44
...

correct output
312

user output
312

Test 23

Group: 1

Verdict: ACCEPTED

input
3 0

correct output
8

user output
8

Test 24

Group: 1

Verdict: ACCEPTED

input
3 1
2

correct output
0

user output
0

Test 25

Group: 1

Verdict: ACCEPTED

input
3 1
3

correct output
0

user output
0

Test 26

Group: 1

Verdict: ACCEPTED

input
3 2
4
6

correct output
2

user output
2

Test 27

Group: 1

Verdict: ACCEPTED

input
3 2
4
7

correct output
2

user output
2

Test 28

Group: 1

Verdict: ACCEPTED

input
3 2
5
6

correct output
2

user output
2

Test 29

Group: 1

Verdict: ACCEPTED

input
3 2
5
7

correct output
2

user output
2

Test 30

Group: 1

Verdict: ACCEPTED

input
3 2
3
6

correct output
0

user output
0

Test 31

Group: 1

Verdict: ACCEPTED

input
3 3
4
5
6

correct output
0

user output
0

Test 32

Group: 1

Verdict: ACCEPTED

input
3 3
4
6
7

correct output
0

user output
0

Test 33

Group: 1

Verdict: ACCEPTED

input
3 4
4
5
6
7

correct output
0

user output
0

Test 34

Group: 1

Verdict: ACCEPTED

input
5 0

correct output
128

user output
128

Test 35

Group: 1

Verdict: ACCEPTED

input
5 1
14

correct output
96

user output
96

Test 36

Group: 2

Verdict: ACCEPTED

input
2 0

correct output
2

user output
2

Test 37

Group: 2

Verdict: ACCEPTED

input
3 0

correct output
8

user output
8

Test 38

Group: 2

Verdict: ACCEPTED

input
4 0

correct output
32

user output
32

Test 39

Group: 2

Verdict: ACCEPTED

input
23 0

correct output
92960636

user output
92960636

Test 40

Group: 2

Verdict: ACCEPTED

input
36 0

correct output
635008130

user output
635008130

Test 41

Group: 2

Verdict: ACCEPTED

input
42 0

correct output
993282280

user output
993282280

Test 42

Group: 2

Verdict: ACCEPTED

input
57 0

correct output
608377687

user output
608377687

Test 43

Group: 2

Verdict: ACCEPTED

input
58 0

correct output
433510734

user output
433510734

Test 44

Group: 2

Verdict: ACCEPTED

input
59 0

correct output
734042929

user output
734042929

Test 45

Group: 2

Verdict: ACCEPTED

input
60 0

correct output
936171702

user output
936171702

Test 46

Group: 3

Verdict: ACCEPTED

input
2 0

correct output
2

user output
2

Test 47

Group: 3

Verdict: ACCEPTED

input
2 1
2

correct output
0

user output
0

Test 48

Group: 3

Verdict: ACCEPTED

input
2 1
3

correct output
0

user output
0

Test 49

Group: 3

Verdict: ACCEPTED

input
2 2
2
3

correct output
0

user output
0

Test 50

Group: 3

Verdict: ACCEPTED

input
59 0

correct output
734042929

user output
734042929

Test 51

Group: 3

Verdict: ACCEPTED

input
60 0

correct output
936171702

user output
936171702

Test 52

Group: 3

Verdict: ACCEPTED

input
60 1
2

correct output
0

user output
0

Test 53

Group: 3

Verdict: ACCEPTED

input
60 1
576460752303423487

correct output
399775198

user output
399775198

Test 54

Group: 3

Verdict: ACCEPTED

input
60 1
1152921504606846975

correct output
667973450

user output
667973450

Test 55

Group: 3

Verdict: ACCEPTED

input
60 100000
793144025126277478
493960657696318193
320344157019848454
997683950258055349
...

correct output
12813436

user output
12813436

Test 56

Group: 3

Verdict: ACCEPTED

input
60 100000
986789393060040220
494066507202684187
290830182157570659
210871095549437400
...

correct output
95910570

user output
95910570

Test 57

Group: 3

Verdict: ACCEPTED

input
60 100000
562299894758506682
731132428235172865
481500339045425690
208947005967360560
...

correct output
331624281

user output
331624281

Test 58

Group: 3

Verdict: ACCEPTED

input
60 100000
257846911019866261
803021202233459674
658685893766403373
874237705485665885
...

correct output
880725152

user output
880725152

Test 59

Group: 3

Verdict: ACCEPTED

input
60 100000
681388061028265547
990382999862855868
290694941402209648
491574111397234946
...

correct output
768320742

user output
768320742

Test 60

Group: 3

Verdict: ACCEPTED

input
60 100000
816968727394104576
879176301780517486
1075817811951859004
632046213104404023
...

correct output
111155168

user output
111155168

Test 61

Group: 3

Verdict: ACCEPTED

input
60 100000
406817930303406656
101704482575856800
406817930303412346
813635860606874021
...

correct output
295651662

user output
295651662

Test 62

Group: 3

Verdict: ACCEPTED

input
59 100000
234885934259928845
244746379456935555
40048493361902167
530369614866009610
...

correct output
78892926

user output
78892926

Test 63

Group: 3

Verdict: ACCEPTED

input
16 65534
26355
15205
3420
22822
...

correct output
0

user output
0

Test 64

Group: 3

Verdict: ACCEPTED

input
60 99999
1030879879260090869
925369330408563145
403438777989811739
321883235203598800
...

correct output
596899803

user output
596899803

Test 65

Group: 3

Verdict: ACCEPTED

input
60 100000
418885324976523921
418885324976523063
837770649953084829
104721331244134167
...

correct output
0

user output
0

Test 66

Group: 3

Verdict: ACCEPTED

input
43 100000
5497882741157
4163319796881
3705445016042
8647080351851
...

correct output
317037701

user output
317037701

Test 67

Group: 3

Verdict: ACCEPTED

input
3 0

correct output
8

user output
8

Test 68

Group: 3

Verdict: ACCEPTED

input
3 1
2

correct output
0

user output
0

Test 69

Group: 3

Verdict: ACCEPTED

input
3 1
3

correct output
0

user output
0

Test 70

Group: 3

Verdict: ACCEPTED

input
3 2
4
6

correct output
2

user output
2

Test 71

Group: 3

Verdict: ACCEPTED

input
3 2
4
7

correct output
2

user output
2

Test 72

Group: 3

Verdict: ACCEPTED

input
3 2
5
6

correct output
2

user output
2

Test 73

Group: 3

Verdict: ACCEPTED

input
3 2
5
7

correct output
2

user output
2

Test 74

Group: 3

Verdict: ACCEPTED

input
3 2
3
6

correct output
0

user output
0

Test 75

Group: 3

Verdict: ACCEPTED

input
3 3
4
5
6

correct output
0

user output
0

Test 76

Group: 3

Verdict: ACCEPTED

input
3 3
4
6
7

correct output
0

user output
0

Test 77

Group: 3

Verdict: ACCEPTED

input
3 4
4
5
6
7

correct output
0

user output
0