CSES - Datatähti Open 2019 - Results
Submission details
Task:Sum
Sender:muradeyn
Submission time:2019-01-20 11:31:30 +0200
Language:C++
Status:READY
Result:0
Feedback
groupverdictscore
#10
Test results
testverdicttime
#10.01 sdetails
#20.02 sdetails
#30.02 sdetails
#40.01 sdetails
#50.02 sdetails
#60.01 sdetails
#70.02 sdetails
#80.02 sdetails
#90.03 sdetails
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#120.01 sdetails
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#150.01 sdetails
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#170.01 sdetails
#180.02 sdetails
#190.03 sdetails
#200.02 sdetails
#210.01 sdetails
#220.01 sdetails
#230.02 sdetails
#240.02 sdetails
#250.02 sdetails
#260.01 sdetails
#270.01 sdetails
#280.02 sdetails

Code

/* Murad Eynizade */

#include <bits/stdc++.h>
#define intt long long
#define FAST_READ ios_base::sync_with_stdio(0);cin.tie(0);
#define SIZE 100001
#define INF INT_MAX
#define F first
#define S second
#define in(a) scanf("%d",&a);
#define outn(a) printf("%d\n",&a);
#define outs(a) printf("%d ",&a);
#define MOD 1000000007

using namespace std;

intt n , m , x , y;

vector< pair<intt,intt> >v[4];

intt ans[4];

map<intt,intt>mp;

intt powmod(intt a,intt b) {
    if (b == 0)return 1LL % MOD;
    if (b == 1)return a % MOD;
    intt help = powmod(a , b / 2);
    if (b % 2) return help * help % MOD * a % MOD;
    return help * help % MOD;
}

int main()
{
    FAST_READ;
    cin>>n>>m;
    //cout<<2LL * powmod(powmod(2 , n - 2) , 2) % MOD<<endl;
    bool en = false;
    while (m--) {
        cin>>x;
        y = x / 2;
        if (y == 1)en = true;
        while (y > 3) y /= 2;
        v[y].push_back({x / 2, x});
    }
    if (en) {
        cout<<0<<endl;
        return 0;
    }
    sort(v[2].begin(),v[2].end());
    sort(v[3].begin(),v[3].end());
    ans[2] = ans[3] = powmod(2 , n - 2);
    for (auto i : v[2]) {
        bool f = false;
        x = i.first;
        while (x > 3) {
            if (mp[x]) {
                f = true;
                break;
            }
            x /= 2;
        }
        if (f)continue;
        mp[x] = mp[i.second] = 1;
        ans[2] = (ans[2] - powmod(2 , n - (int)log2(i.second) - 1) + MOD) % MOD;
    }
    /*for (auto i : v[3]) {
        bool f = false;
        x = i.first;
        while (x > 3) {
            if (mp[x]) {
                f = true;
                break;
            }
            x /= 2;
        }
        if (f)continue;
        mp[x] = mp[i.second] = 1;
        ans[3] = (ans[3] - powmod(2 , n - (int)log2(i.second) - 1) + MOD) % MOD;
    }*/
    cout<<ans[2] * ans[3] % MOD * 2LL % MOD<<endl;
    return 0;
}

Test details

Test 1

Verdict:

input
1

correct output
0

user output
8

Test 2

Verdict:

input
2

correct output
0

user output
2

Test 3

Verdict:

input
3

correct output
0

user output
8

Test 4

Verdict:

input
4

correct output
0

user output
32

Test 5

Verdict:

input
5

correct output
0

user output
128

Test 6

Verdict:

input
6

correct output
1

user output
512

Test 7

Verdict:

input
7

correct output
1

user output
2048

Test 8

Verdict:

input
8

correct output
2

user output
8192

Test 9

Verdict:

input
9

correct output
3

user output
32768

Test 10

Verdict:

input
10

correct output
4

user output
131072

Test 11

Verdict:

input
20

correct output
24

user output
438952513

Test 12

Verdict:

input
30

correct output
61

user output
67049563

Test 13

Verdict:

input
40

correct output
114

user output
562080146

Test 14

Verdict:

input
50

correct output
184

user output
747046415

Test 15

Verdict:

input
60

correct output
271

user output
936171702

Test 16

Verdict:

input
70

correct output
374

user output
171724823

Test 17

Verdict:

input
80

correct output
494

user output
526741586

Test 18

Verdict:

input
90

correct output
631

user output
581415240

Test 19

Verdict:

input
100

correct output
784

user output
62430634

Test 20

Verdict:

input
200

correct output
3234

user output
274870944

Test 21

Verdict:

input
300

correct output
7351

user output
455807409

Test 22

Verdict:

input
400

correct output
13134

user output
612583114

Test 23

Verdict:

input
500

correct output
20584

user output
336052903

Test 24

Verdict:

input
600

correct output
29701

user output
159764261

Test 25

Verdict:

input
700

correct output
40484

user output
279617488

Test 26

Verdict:

input
800

correct output
52934

user output
449044111

Test 27

Verdict:

input
900

correct output
67051

user output
779660930

Test 28

Verdict:

input
1000

correct output
82834

user output
593652318