QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#467507 | #7679. Master of Both IV | roger_yrj | WA | 20ms | 10252kb | C++14 | 1.1kb | 2024-07-08 16:30:51 | 2024-07-08 16:30:51 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
const int N=2e5+10,mod=998244353;
int a[N],n,ans=1,b[30],vis[N],cnt[N];
vector<int>g[N];
int qpow(int x){
int y=2,ret=1;
while(x){
if(x&1)ret=1ll*ret*y%mod;
y=1ll*y*y%mod;
x>>=1;
}
return ret;
}
void solve(){
ans=1;
cin>>n;
memset(b,0,sizeof(b));
for(int i=1;i<=n;i++)cnt[i]=0,g[i].clear();
for(int i=1;i<=n;i++){
cin>>a[i];cnt[a[i]]++;
int x=a[i];
for(int j=20;j>=0;j--){
if(x&(1<<j)){
if(b[j])x^=b[j];
else{
b[j]=x;
break;
}
}
}
if(!x)ans=1ll*ans*2%mod;
}ans--;
for(int i=1;i<=n;i++)
if(cnt[i])
for(int j=i;j<=n;j+=i)
if(cnt[j])g[j].push_back(a[i]);
for(int i=1;i<=n;i++){
if(cnt[i]){
int Cnt=0;
memset(b,0,sizeof(b));
for(int j:g[i]){
Cnt+=cnt[j];
for(int k=20;k>=0;k--){
if(j&(1<<k)){
if(b[k])j^=b[k];
else{
b[k]=j;
break;
}
}
}
if(j)Cnt--;
}
ans=(1ll*ans+qpow(Cnt))%mod;
}
}
cout<<ans<<"\n";
}
int main(){
ios::sync_with_stdio(0);
cin.tie(0);
int T;cin>>T;
while(T--)solve();
}
Details
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Test #1:
score: 100
Accepted
time: 2ms
memory: 10252kb
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: -100
Wrong Answer
time: 20ms
memory: 8984kb
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:
12 16 40 11 8 8 9 8 9 11 13 17 11 8 11 14 12 15 17 43 17 17 43 75 11 9 17 9 8 13 15 17 11 8 8 8 17 8 17 19 12 15 19 9 8 8 9 13 17 17 12 11 9 14 9 12 11 17 15 8 10 71 17 17 17 9 21 9 11 9 12 10 9 8 15 29 17 8 40 10 8 40 9 9 8 15 9 8 13 8 11 17 8 19 17 14 43 19 15 9 9 17 8 11 8 9 15 15 19 43 10 17 17 ...
result:
wrong answer 1st numbers differ - expected: '9', found: '12'