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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#629428#7735. Primitive Root666ldcWA 3ms3708kbC++171.0kb2024-10-11 11:31:462024-10-11 11:31:48

Judging History

你现在查看的是最新测评结果

  • [2024-10-11 11:31:48]
  • 评测
  • 测评结果:WA
  • 用时:3ms
  • 内存:3708kb
  • [2024-10-11 11:31:46]
  • 提交

answer

#pragma GCC optimize(2)
#pragma GCC optimize(3, "Ofast", "inline")
#include <bits/stdc++.h>
using namespace std;
#define x first
#define y second
#define int long long
#define endl '\n'
using i128 = __int128;
using i64 = long long;
using f128 = long double;
using u64 = unsigned long long;
using pii = pair<int, int>;
const int INF = 0x3f3f3f3f, mod = 1e9 + 7;
const i64 inf = 2e18;
//-------------------------------------------
void solve()
{
    int P, m;
    cin >> P >> m;
    int mb = 33 - __builtin_clz(P - 1);
    int mm = (m >> mb) << mb;
    int ans = max((mm - 2) / P + 1, 0LL);
    int num = max(((mm - 2) / P), -1LL) * P + 1;
    num += P;
    while ((num >> mb) <= (mm >> mb))
    {
        if ((num ^ (P - 1)) <= m)
        {
            ans++;
        }
        num += P;
    }

    cout << ans << endl;
}

signed main()
{
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    int T = 1;
    cin >> T;
    for (int i = 1; i <= T; i++)
        solve();
    return 0;
}

Details

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Test #1:

score: 100
Accepted
time: 0ms
memory: 3640kb

input:

3
2 0
7 11
1145141 998244353

output:

1
2
872

result:

ok 3 lines

Test #2:

score: -100
Wrong Answer
time: 3ms
memory: 3708kb

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'