QOJ.ac

QOJ

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
#668164#7735. Primitive RootD06WA 8ms3708kbC++14626b2024-10-23 12:03:222024-10-23 12:03:22

Judging History

你现在查看的是最新测评结果

  • [2024-10-23 12:03:22]
  • 评测
  • 测评结果:WA
  • 用时:8ms
  • 内存:3708kb
  • [2024-10-23 12:03:22]
  • 提交

answer

#include <bits/stdc++.h>
using namespace std;
long long p,m,ans;
long long lowbit(long long n)
{
	return n&(-n);
}
long long calc(long long m)
{
	if(m==0)
	{
		return 0;
	}
	return (m-1)/p+1;
}
long long calc(long long l,long long r)
{
	long long tmp=lowbit(r)-1;
	tmp=~tmp;
	long long f=(p-1)&tmp;
	l=l^f;
	return calc(l+lowbit(r)-1)-calc(l)+((r^(p-1))%p==1);
}
int main()
{
	ios::sync_with_stdio(false);
	cin.tie(0);
	int T;
	cin>>T;
	while(T--)
	{
		cin>>p>>m;
		ans=((p-1)%p==1);
		while(m)
		{
			ans+=calc(m-lowbit(m),m);
			m-=lowbit(m);
		}
		cout<<ans<<endl;
	}
	return 0;
}

详细

Test #1:

score: 100
Accepted
time: 0ms
memory: 3644kb

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: 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
3
3
4
4
6
6
6
6
8
8
9
9
11
11
10
10
12
12
13
13
15
15
15
15
17
17
18
18
20
20
18
18
20
20
21
21
23
23
23
23
25
25
26
26
28
28
27
27
29
29
30
30
32
32
32
32
34
34
35
35
37
37
34
34
36
36
37
37
39
39
39
39
41
41
42
42
44
44
43
43
45
45
46
46
48
48
48
48
50
50
51
51
53
53
51
51
53
53
54
54
56
56
56...

result:

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