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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 |
|---|---|---|---|---|---|---|---|---|---|
| #512536 | #9167. Coprime Array | ucup-team3723# | AC ✓ | 51ms | 7092kb | C++20 | 2.8kb | 2024-08-10 14:49:20 | 2024-10-14 07:52:00 |
Judging History
answer
#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
int main()
{
const int ma = 1e6;
int s, x;
cin >> s >> x;
vector<int> ans;
if (__gcd(s, x) == 1)
{
ans.push_back(s);
}
else
{
vector<int> isp(ma + 1, 1);
int tmpx = x;
isp[0] = isp[1] = 0;
for (int i = 2; i * i <= x; ++i)
{
if (x % i) continue;
while (x % i == 0) x /= i;
for (int j = 1; i * j <= ma; ++j) isp[i * j] = 0;
}
if (x != 1) for (int i = 1; i * x <= ma; ++i) isp[i * x] = 0;
x = tmpx;
isp[1] = 1;
for (int i = 1; i <= ma; ++i)
{
if (isp[i] == 1)
{
if (s - i != 0 && __gcd((int)abs(s - i), x) == 1)
{
ans.push_back(i);
ans.push_back(s - i);
break;
}
if (s + i != 0 && __gcd((int)abs(s + i), x) == 1)
{
ans.push_back(-i);
ans.push_back(s + i);
break;
}
}
}
if (ans.empty())
{
ans.push_back(1);
--s;
for (int i = 1; i <= ma; ++i)
{
if (isp[i] == 1)
{
if (s - i != 0 && __gcd((int)abs(s - i), x) == 1)
{
ans.push_back(i);
ans.push_back(s - i);
break;
}
if (s + i != 0 && __gcd((int)abs(s + i), x) == 1)
{
ans.push_back(-i);
ans.push_back(s + i);
break;
}
}
}
if (ans.size() == 1) ans.clear();
}
if (ans.empty())
{
ans.push_back(-1);
s += 2;
for (int i = 1; i <= ma; ++i)
{
if (isp[i] == 1)
{
if (s - i != 0 && __gcd((int)abs(s - i), x) == 1)
{
ans.push_back(i);
ans.push_back(s - i);
break;
}
if (s + i != 0 && __gcd((int)abs(s + i), x) == 1)
{
ans.push_back(-i);
ans.push_back(s + i);
break;
}
}
}
if (ans.size() == 1) ans.clear();
}
}
cout << ans.size() << endl;
for (auto v : ans) cout << v << ' ';
cout << endl;
}
这程序好像有点Bug，我给组数据试试？
详细
Test #1:
score: 100
Accepted
time: 5ms
memory: 6984kb
input:
9 6
output:
3 1 1 7
result:
ok Correct
Test #2:
score: 0
Accepted
time: 2ms
memory: 6972kb
input:
14 34
output:
2 1 13
result:
ok Correct
Test #3:
score: 0
Accepted
time: 2ms
memory: 7084kb
input:
1000000000 223092870
output:
2 29 999999971
result:
ok Correct
Test #4:
score: 0
Accepted
time: 1ms
memory: 7088kb
input:
2 1000000000
output:
2 1 1
result:
ok Correct
Test #5:
score: 0
Accepted
time: 2ms
memory: 6992kb
input:
649557664 933437700
output:
2 -7 649557671
result:
ok Correct
Test #6:
score: 0
Accepted
time: 3ms
memory: 7004kb
input:
33396678 777360870
output:
2 1 33396677
result:
ok Correct
Test #7:
score: 0
Accepted
time: 32ms
memory: 7004kb
input:
48205845 903124530
output:
3 1 -23 48205867
result:
ok Correct
Test #8:
score: 0
Accepted
time: 2ms
memory: 6976kb
input:
251037078 505905400
output:
2 1 251037077
result:
ok Correct
Test #9:
score: 0
Accepted
time: 2ms
memory: 7044kb
input:
30022920 172746860
output:
2 1 30022919
result:
ok Correct
Test #10:
score: 0
Accepted
time: 0ms
memory: 6920kb
input:
63639298 808058790
output:
2 -1 63639299
result:
ok Correct
Test #11:
score: 0
Accepted
time: 37ms
memory: 7012kb
input:
76579017 362768406
output:
3 1 1 76579015
result:
ok Correct
Test #12:
score: 0
Accepted
time: 51ms
memory: 7092kb
input:
40423669 121437778
output:
3 1 1 40423667
result:
ok Correct
Test #13:
score: 0
Accepted
time: 2ms
memory: 6920kb
input:
449277309 720915195
output:
2 1 449277308
result:
ok Correct
Test #14:
score: 0
Accepted
time: 32ms
memory: 6936kb
input:
81665969 919836918
output:
3 1 5 81665963
result:
ok Correct
Test #15:
score: 0
Accepted
time: 0ms
memory: 6972kb
input:
470578680 280387800
output:
2 1 470578679
result:
ok Correct
Test #16:
score: 0
Accepted
time: 2ms
memory: 6956kb
input:
58450340 803305503
output:
2 1 58450339
result:
ok Correct
Test #17:
score: 0
Accepted
time: 34ms
memory: 6920kb
input:
125896113 323676210
output:
3 1 -17 125896129
result:
ok Correct
Test #18:
score: 0
Accepted
time: 2ms
memory: 7088kb
input:
381905348 434752500
output:
2 1 381905347
result:
ok Correct
Test #19:
score: 0
Accepted
time: 0ms
memory: 3608kb
input:
78916498 653897673
output:
1 78916498
result:
ok Correct
Test #20:
score: 0
Accepted
time: 32ms
memory: 7084kb
input:
35787885 270845190
output:
3 1 1 35787883
result:
ok Correct
Extra Test:
score: 0
Extra Test Passed