QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#258071 | #7679. Master of Both IV | daydream# | WA | 21ms | 3652kb | C++20 | 1.1kb | 2023-11-19 14:49:12 | 2023-11-19 14:49:12 |
Judging History
answer
#include<bits/stdc++.h>
#define LL long long
#define eb emplace_back
#define pii pair<int,int>
#define fr first
#define sc second
#define mp make_pair
using namespace std;
const int infi=1e9,mod=998244353;
void upd(int &x,const int y) {if((x+=y)>=mod) x-=mod;}
struct Xor
{
int cnt,a[20];
Xor() {cnt=0; memset(a,0,sizeof(a));}
void insert(int x)
{
for(int i=19;~i;--i)
if(x>>i&1)
{
if(!a[i])
{
a[i]=x;++cnt;
return ;
}
x^=a[i];
if(!x) return ;
}
}
};
int n,m;
void solve()
{
cin>>n;vector<int> a(n+1,0),pw(n+1,0),cnt(n+1,0);
Xor X;pw[0]=1;
for(int i=1;i<=n;++i) cin>>a[i],cnt[a[i]]++,X.insert(a[i]),pw[i]=pw[i-1]*2ll%mod;
int ans=pw[n-X.cnt]-1;
vector<vector<int>> G(n+1);
for(int i=1;i<=n;++i)
for(int j=i+i;j<=n;j+=i)
G[j].eb(i);
for(int i=1;i<=n;++i)
{
if(!cnt[i]) continue;
int res=pw[cnt[i]-1];
for(auto x:G[i])
if(cnt[x])
res=1ll*res*pw[cnt[x]-1]%mod;
upd(ans,res);
// cout<<res<<'\n';
}
cout<<ans<<'\n';
}
int main()
{
ios::sync_with_stdio(false);
cin.tie(0);cout.tie(0);
int TT=1;
cin>>TT;
for(;TT;--TT) solve();
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3644kb
input:
2 3 1 2 3 5 3 3 5 1 1
output:
4 11
result:
ok 2 number(s): "4 11"
Test #2:
score: 0
Accepted
time: 21ms
memory: 3652kb
input:
40000 5 4 2 5 5 5 5 5 5 5 5 4 5 1 4 4 4 2 5 2 5 2 4 1 5 3 2 4 5 3 5 1 5 5 3 4 5 5 5 5 4 3 5 4 3 3 5 1 5 4 5 5 2 1 5 2 5 4 2 5 5 3 4 3 4 3 5 5 3 5 1 3 5 5 1 2 4 4 5 4 2 5 1 5 5 5 4 2 5 4 5 5 2 5 2 4 5 1 4 5 4 5 5 4 2 3 2 3 5 1 4 1 3 5 5 1 1 2 1 5 5 5 2 5 1 3 5 3 1 2 5 3 5 5 5 1 1 5 5 2 2 2 1 3 5 3 1 ...
output:
9 16 9 9 8 8 9 8 8 9 13 8 8 8 8 9 12 9 11 15 8 8 17 13 8 11 8 8 8 13 15 9 9 8 8 8 11 9 11 13 15 9 17 9 8 8 8 13 11 8 9 11 8 8 11 15 9 8 9 8 8 15 11 8 17 9 15 8 8 8 12 9 9 11 8 13 9 8 15 8 8 9 8 8 8 15 8 11 13 8 9 11 8 19 11 13 19 17 13 15 8 8 8 9 8 9 13 15 17 9 9 17 9 11 9 9 11 9 9 11 8 9 9 13 15 11...
result:
ok 40000 numbers
Test #3:
score: -100
Wrong Answer
time: 21ms
memory: 3512kb
input:
20000 10 1 3 6 8 3 1 10 7 2 3 10 8 2 8 9 10 5 8 4 8 3 10 2 2 10 1 6 4 4 3 4 7 10 6 5 10 7 8 7 3 1 6 6 10 3 2 3 7 8 4 9 8 8 7 10 9 9 6 4 9 3 9 10 5 9 10 10 8 9 10 10 4 5 1 4 3 10 2 10 4 5 8 10 2 2 7 2 10 2 6 4 10 1 1 1 1 2 3 10 1 10 2 8 1 5 9 4 3 1 10 8 1 8 1 9 5 6 7 2 9 10 1 6 7 4 8 8 7 3 5 7 10 10 ...
output:
89 77 80 74 75 84 75 105 143 95 81 74 78 73 73 73 83 93 90 84 79 77 73 89 77 73 81 79 80 175 83 77 83 76 83 85 84 97 74 80 101 74 113 74 75 95 75 83 86 77 99 73 77 83 91 96 77 80 77 76 80 81 73 95 83 74 75 81 77 79 74 76 78 81 97 77 85 73 92 83 73 80 73 77 74 73 142 83 99 78 91 77 76 81 77 74 78 76 ...
result:
wrong answer 1st numbers differ - expected: '97', found: '89'