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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#816923 | #9870. Items | Coffins | WA | 20ms | 13916kb | C++14 | 1.8kb | 2024-12-16 19:11:54 | 2024-12-16 19:11:58 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
using ll=long long;
const int N=1<<19;
const int p=998244353;
const int ig=(p+1)/3;
int n,k,l,a[N],q,r;ll m;
ll f[N],g[N],A[N],B[N];int rv[N];
ll ksm(ll a,ll b)
{
ll ans=1;while(b)
{
if(b&1)ans=ans*a%p;
a=a*a%p,b>>=1;
}return ans;
}
void init(int n)
{
for(int i=0;i<=n;i++)
{
rv[i]=rv[i>>1]>>1;
if(i&1)rv[i]|=(n>>1);
}
}void NTT(ll *a,int n,int o)
{
for(int i=0;i<n;i++)
if(rv[i]<i)swap(a[i],a[rv[i]]);
for(int d=1;d<n;d<<=1)
{
ll bs=ksm(ig,(p-1)/d/2);
if(~o)bs=ksm(bs,p-2);
for(int i=0;i<n;i+=(d<<1))
{
ll vl=1;
for(int j=i;j<i+d;j++)
{
ll x=a[j],y=a[j+d]*vl%p;
if((a[j]=x+y)>=p)a[j]-=p;
if((a[j+d]=x+p-y)>=p)a[j+d]-=p;
vl=vl*bs%p;
}
}
}if(o==-1)
{
const ll vl=ksm(n,p-2);
for(int i=0;i<n;i++)
a[i]=a[i]*vl%p;
}
}void mul(ll *f,ll *g,int d)
{
for(int i=0;i<l;i++)A[i]=f[i];
for(int i=0;i<l;i++)B[i]=g[i];
NTT(A,l,1),NTT(B,l,1);
for(int i=0;i<l;i++)
A[i]=A[i]*B[i]%p;
NTT(A,l,-1);
for(int i=0;i<l;i++)
if(i+d<l&&A[i+d])f[i]=1;
else f[i]=0;
for(int i=0;i<l;i++)
if(f[i])f[i]=1;
}
void solve()
{
cin>>n>>m;k=n,q=m/n,r=m%n;
l=1;while(l<=(n<<2))l<<=1;init(l);
for(int i=1;i<=n;i++)cin>>a[i];
for(int i=0;i<l;i++)f[i]=0;
for(int i=0;i<l;i++)g[i]=0;g[n]=1;
for(int i=1;i<=n;i++)f[a[i]]=1;
while(k)
{
mul(g,g,n);
if(k&1)mul(g,f,q);
k>>=1;
}if(g[r+n])cout<<"Yes\n";
else cout<<"No\n";
}
int main()
{
ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
int t;cin>>t;while(t--)solve();return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 2ms
memory: 13904kb
input:
4 5 25 0 0 0 0 5 5 11 4 4 4 5 5 5 0 1 2 3 4 5 5 25 0 1 2 3 4
output:
Yes No No No
result:
ok 4 token(s): yes count is 1, no count is 3
Test #2:
score: -100
Wrong Answer
time: 20ms
memory: 13916kb
input:
1314 1 0 0 1 0 1 1 1 0 1 1 1 2 0 0 0 2 0 0 1 2 0 0 2 2 0 1 0 2 0 1 1 2 0 1 2 2 0 2 0 2 0 2 1 2 0 2 2 2 1 0 0 2 1 0 1 2 1 0 2 2 1 1 0 2 1 1 1 2 1 1 2 2 1 2 0 2 1 2 1 2 1 2 2 2 2 0 0 2 2 0 1 2 2 0 2 2 2 1 0 2 2 1 1 2 2 1 2 2 2 2 0 2 2 2 1 2 2 2 2 2 3 0 0 2 3 0 1 2 3 0 2 2 3 1 0 2 3 1 1 2 3 1 2 2 3 2 0...
output:
Yes No No Yes Yes Yes Yes Yes No No Yes No No No Yes No Yes Yes Yes No Yes No No Yes No Yes Yes Yes No Yes No No No Yes No No Yes Yes Yes Yes No No Yes No No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No No No Yes No No No Yes No No No Yes Yes...
result:
wrong answer expected NO, found YES [18th token]