QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#629428 | #7735. Primitive Root | 666ldc | WA | 3ms | 3708kb | C++17 | 1.0kb | 2024-10-11 11:31:46 | 2024-10-11 11:31:48 |
Judging History
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'