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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#552329 | #7679. Master of Both IV | Jiangnan01 | WA | 79ms | 43044kb | C++17 | 2.1kb | 2024-09-07 22:03:24 | 2024-09-07 22:03:25 |
Judging History
answer
#include <bits/stdc++.h>
#define int long long
using namespace std;
const int MAXN = 2e5+10;
const int p1=998244353;
int p[MAXN][32];
int ra[MAXN],con[MAXN];//记录秩,因子个数
int mp[MAXN];//数的个数
vector<int> ps[MAXN];
set<int> a;
int r=0;
int ksm(int x,int y)
{
int ans=1;
while(y>0)
{
if(y&1)ans=ans*x%p1;
x=x*x%p1;
y>>=1;
}
return ans;
}
int add(int x,int k)
{
for(int i=31;i>=0;i--)
{
if((x>>i) && p[k][i]==0)
{
p[k][i]=x;
return 1;
}
else
{
x^=p[k][i];
}
}
return 0;
}
void solve()
{
int n;
cin>>n;
r=0;
a.clear();
for(int i=0;i<=n;i++)
{
mp[i]=0;
for(int j=0;j<32;j++)p[i][j]=0;
ra[i]=0;
con[i]=0;
}
for(int i=1;i<=n;i++)
{
int k;
cin>>k;
a.insert(k);
if(add(k,0)==1)r++;
mp[k]++;
}
for(auto i:a)
{
for(auto x:ps[i])
{
if(mp[x]>=1 && (x != i))
{
if(add(x,i)==1)ra[i]++;
con[i]+=mp[x];
}
}
}
int ans=0;
//cout<<r<<"\n";
ans+=ksm(2,n-r);
for(auto x:a)
{
//cout<<x<<" : "<<con[x]<<" "<<ra[x]<<" " << mp[x]<<"\n";
int t=con[x]-ra[x];
ans+=ksm(2,t)*ksm(2,mp[x]-1)%p1;
ans%=p1;
}
cout<<(ans-1+p1)%p1<<"\n";
}
signed main()
{
//freopen("E:\work tool\code document\data\input.in", "r", stdin);
//freopen("E:\work tool\code document\data\output.out", "w", stdout);
ios::sync_with_stdio(false);
ios_base::sync_with_stdio(false);
cin.tie(0);
cout.tie(0); //关闭同步 如果使用 则不要使用<cstdio>
// cout << fixed << setprecision(10);
int T=1;
cin>>T;
for(int i=1;i<=2e5;i++)
{
for(int j=i;j<=2e5;j+=i)
{
ps[j].push_back(i);
}
}
while(T--){
solve();
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 68ms
memory: 42096kb
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: 79ms
memory: 43044kb
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 9 8 8 8 8 9 12 9 11 15 8 8 13 13 8 11 8 8 8 13 15 9 9 8 8 8 11 9 11 9 11 9 13 9 8 8 8 9 11 8 9 11 8 8 11 11 9 8 9 8 8 15 11 8 17 9 11 8 8 8 12 9 9 11 8 13 9 8 15 8 8 9 8 8 8 15 8 11 9 8 9 11 8 19 11 13 15 13 9 15 8 8 8 9 8 9 9 11 13 9 9 13 9 11 9 9 11 9 9 11 8 9 9 13 15 11 8 11 ...
result:
wrong answer 11th numbers differ - expected: '13', found: '9'