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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#638838#7735. Primitive RootAlascoWA 13ms3676kbC++14842b2024-10-13 17:02:262024-10-13 17:02:27

Judging History

你现在查看的是最新测评结果

  • [2024-10-13 17:02:27]
  • 评测
  • 测评结果:WA
  • 用时:13ms
  • 内存:3676kb
  • [2024-10-13 17:02:26]
  • 提交

answer

#include <bits/stdc++.h>
using namespace std;using ll=long long;using ld=long double;using ull=unsigned long long;
const ll M=998244353;const double eps=1e-10;const int inf=1e9+7;const ll INF=1e17;
ll m,p,np1,nm,k;
void __(){
    cin>>p>>m;
    np1=nm=-1;
    for(int i=60;i>=0;i--){
        if((1ll<<i)&(p-1)){
            np1=i;break;
        }
    }
    for(int i=60;i>=0;i--){
        if((1ll<<i)&m){
            nm=i;break;
        }
    }
    ll tmp=(m|((1ll<<(np1+1))-1))-((1ll<<(np1+1))-1);
    ll k=max(0ll,(tmp-2)/p);
    int num=0;
    for(ll i=k+1;i<=k+105;i++){
        if(i*p+1>=(1ll<<61))break;
        if(((i*p+1)^(p-1))<=m){
            num++;
        }
    }
    
    cout<<num+k+1ll<<"\n";
}
signed main(){
    ios::sync_with_stdio(false),cin.tie(nullptr);
    int _;cin>>_;while(_--)__();
}

Details

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Test #1:

score: 100
Accepted
time: 0ms
memory: 3676kb

input:

3
2 0
7 11
1145141 998244353

output:

1
2
872

result:

ok 3 lines

Test #2:

score: -100
Wrong Answer
time: 13ms
memory: 3672kb

input:

47595
2 0
2 1
2 2
2 3
2 4
2 5
2 6
2 7
2 8
2 9
2 10
2 11
2 12
2 13
2 14
2 15
2 16
2 17
2 18
2 19
2 20
2 21
2 22
2 23
2 24
2 25
2 26
2 27
2 28
2 29
2 30
2 31
2 32
2 33
2 34
2 35
2 36
2 37
2 38
2 39
2 40
2 41
2 42
2 43
2 44
2 45
2 46
2 47
2 48
2 49
2 50
2 51
2 52
2 53
2 54
2 55
2 56
2 57
2 58
2 59
2 60...

output:

1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
15
15
16
16
17
17
18
18
19
19
20
20
21
21
22
22
23
23
24
24
25
25
26
26
27
27
28
28
29
29
30
30
31
31
32
32
33
33
34
34
35
35
36
36
37
37
38
38
39
39
40
40
41
41
42
42
43
43
44
44
45
45
46
46
47
47
48
48
49
49
50
50
51
51
52
52
53
53
...

result:

wrong answer 502nd lines differ - expected: '0', found: '1'