QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#351753 | #6428. K Co-prime Permutation | PorNPtree# | AC ✓ | 48ms | 7532kb | C++20 | 1.2kb | 2024-03-12 14:21:27 | 2024-03-12 14:21:27 |
Judging History
answer
#include<bits/stdc++.h>
#define LL long long
#define P pair<int,int>
#define fi first
#define se second
#define fr(x) freopen(#x".in","r",stdin);freopen(#x".out","w",stdout);
using namespace std;
const int N=1e6+5;
int n,k,a[N];
int main()
{
ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);cin>>n>>k;
if(!k) return cout<<"-1",0;
for(int i=1;i<=n;i++) a[i]=i;
if(k&1)
{
for(int i=n,j=1;j<k;i--,j++) if((n-i)&1^1) swap(a[i],a[i-1]);
for(int i=1;i<=n;i++) cout<<a[i]<<" ";return 0;
}
if(k==n)
{
for(int i=1;i<=n;i+=2) swap(a[i],a[i+1]);
for(int i=1;i<=n;i++) cout<<a[i]<<" ";return 0;
}int m=n-(n&1^1);
if(k!=2)
{
a[m-2]=m-1,a[m-1]=m,a[m]=m-2;k-=4;
for(int i=m-3,j=1;j<k;i--,j++) if((m-3-i)&1^1) swap(a[i],a[i-1]);
for(int i=1;i<=n;i++) cout<<a[i]<<" ";return 0;
}
swap(a[1],a[2]);
for(int i=1;i<=n;i++) cout<<a[i]<<" ";return 0;
// for(int i=1;i<=n;i++) p[i]=i;
// do
// {
// int cnt=0;
// for(int i=1;i<=n;i++) cnt+=(__gcd(i,p[i])==1);
// if(!v[cnt]&&(cnt&1^1))
// {
// cout<<cnt<<":";for(int i=1;i<=n;i++) cout<<p[i]<<" ";cout<<"\n";
// v[cnt]=1;
// }
// }while(next_permutation(p+1,p+n+1));
// for(int i=0;i<=n;i++) cout<<i<<":"<<v[i]<<"\n";
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 0ms
memory: 3644kb
input:
5 3
output:
1 2 3 5 4
result:
ok ac
Test #2:
score: 0
Accepted
time: 0ms
memory: 3636kb
input:
1 0
output:
-1
result:
ok ac
Test #3:
score: 0
Accepted
time: 41ms
memory: 7532kb
input:
1000000 3789
output:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 ...
result:
ok ac
Test #4:
score: 0
Accepted
time: 31ms
memory: 7476kb
input:
1000000 578768
output:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 ...
result:
ok ac
Test #5:
score: 0
Accepted
time: 0ms
memory: 3640kb
input:
500 1
output:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 ...
result:
ok ac
Test #6:
score: 0
Accepted
time: 28ms
memory: 5984kb
input:
600000 600000
output:
2 1 4 3 6 5 8 7 10 9 12 11 14 13 16 15 18 17 20 19 22 21 24 23 26 25 28 27 30 29 32 31 34 33 36 35 38 37 40 39 42 41 44 43 46 45 48 47 50 49 52 51 54 53 56 55 58 57 60 59 62 61 64 63 66 65 68 67 70 69 72 71 74 73 76 75 78 77 80 79 82 81 84 83 86 85 88 87 90 89 92 91 94 93 96 95 98 97 100 99 102 101 ...
result:
ok ac
Test #7:
score: 0
Accepted
time: 28ms
memory: 6280kb
input:
600000 1
output:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 ...
result:
ok ac
Test #8:
score: 0
Accepted
time: 0ms
memory: 3632kb
input:
600000 0
output:
-1
result:
ok ac
Test #9:
score: 0
Accepted
time: 48ms
memory: 7468kb
input:
1000000 999997
output:
1 2 3 4 6 5 8 7 10 9 12 11 14 13 16 15 18 17 20 19 22 21 24 23 26 25 28 27 30 29 32 31 34 33 36 35 38 37 40 39 42 41 44 43 46 45 48 47 50 49 52 51 54 53 56 55 58 57 60 59 62 61 64 63 66 65 68 67 70 69 72 71 74 73 76 75 78 77 80 79 82 81 84 83 86 85 88 87 90 89 92 91 94 93 96 95 98 97 100 99 102 101 ...
result:
ok ac
Test #10:
score: 0
Accepted
time: 39ms
memory: 7456kb
input:
1000000 510000
output:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 ...
result:
ok ac
Test #11:
score: 0
Accepted
time: 42ms
memory: 7480kb
input:
999877 23324
output:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 ...
result:
ok ac
Test #12:
score: 0
Accepted
time: 0ms
memory: 3552kb
input:
1 1
output:
1
result:
ok ac
Test #13:
score: 0
Accepted
time: 0ms
memory: 3632kb
input:
2 0
output:
-1
result:
ok ac
Test #14:
score: 0
Accepted
time: 0ms
memory: 3644kb
input:
2 1
output:
1 2
result:
ok ac
Test #15:
score: 0
Accepted
time: 0ms
memory: 3572kb
input:
2 2
output:
2 1
result:
ok ac