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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#673881#7735. Primitive RootnageingWA 8ms3636kbC++20666b2024-10-25 11:26:042024-10-25 11:26:05

Judging History

你现在查看的是最新测评结果

  • [2024-10-25 11:26:05]
  • 评测
  • 测评结果:WA
  • 用时:8ms
  • 内存:3636kb
  • [2024-10-25 11:26:04]
  • 提交

answer

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll, ll> pii;


void solve() {
	ll p, m;
	cin >> p >> m;

	ll now = 0;
	auto cal = [&](int x) -> ll {
		// L <= kp < R
		ll L = now - 1, R = now + (1 << x) - 2;
		ll sum2 = R / p, sum1 = (L + p - 1) / p;
		return sum2 - sum1 + 1;
	};

	ll ans = 0;
	for (int i = 63; i >= 0; i --) {
		if ((m >> i) & 1) {
			ans = ans + cal(i);
			now = now + (1 << i);
		}
	}
	if (m == 0) {
		ans ++;
	}
	cout << ans << '\n';
}

int main() {
	ios::sync_with_stdio(false);
	cin.tie(nullptr); cout.tie(nullptr);
	int t = 1;
	cin >> t;
	while (t --) {
		solve();
	}
}

详细

Test #1:

score: 100
Accepted
time: 0ms
memory: 3636kb

input:

3
2 0
7 11
1145141 998244353

output:

1
2
872

result:

ok 3 lines

Test #2:

score: -100
Wrong Answer
time: 8ms
memory: 3560kb

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
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...

result:

wrong answer 3rd lines differ - expected: '2', found: '1'