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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#806027 | #9870. Items | wyhao | WA | 242ms | 34524kb | C++14 | 2.4kb | 2024-12-08 20:41:45 | 2024-12-08 20:42:00 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
const int N=500005,P=998244353;
typedef long long ll;
namespace NTT{
int r[N],n,inv;
int pw(int x,int k){
int ans=1;
for(;k;k>>=1,x=1ll*x*x%P){
if(k&1) ans=1ll*ans*x%P;
}
return ans;
}
void init(int lim){
n=lim;inv=pw(n,P-2);
for(int i=0;i<lim;i++){
r[i]=(r[i>>1]>>1)|((i&1)?(n>>1):0);
}
}
void fft(int *f,int v){
for(int i=0;i<n;i++){
if(i<r[i]){
int z=f[i];f[i]=f[r[i]];f[r[i]]=z;
}
}
for(int lim=2;lim<=n;lim<<=1){
int k=lim>>1,dw=pw(3,(P-1)/lim),w;
if(v==-1) dw=pw(dw,P-2);
for(int i=0;i<n;i+=lim){
w=1;
for(int j=i;j<i+k;j++){
int x=f[j],y=1ll*f[j+k]*w%P;
f[j]=(x+y)%P;
f[j+k]=(x-y+P)%P;
w=1ll*w*dw%P;
}
}
}
if(v==-1){
for(int i=0;i<n;i++){
f[i]=1ll*f[i]*inv%P;
}
}
}
int X[N],Y[N];
void tms(int *f,int *g,int *h,int lim){
// init(lim*2);
for(int i=0;i<n;i++) X[i]=f[i],Y[i]=g[i];
fft(X,1);fft(Y,1);
for(int i=0;i<n;i++) X[i]=1ll*X[i]*Y[i]%P;
fft(X,-1);
for(int i=0;i<n;i++) h[i]=X[i];
}
}
int n;
ll m;
int w[N];
int f[20][N>>1];
int h[N],g[N];
void solve(){
scanf("%d%lld",&n,&m);
for(int i=1;i<=n;i++) scanf("%d",&w[i]),w[i]-=m/n;
m%=n;
int lim =1;
while(lim<=(2*n+1)) lim<<=1;
for(int i=0;i<=18;i++){
for(int j=0;j<lim;j++){
f[i][j]=0;
}
}
memset(h,0,sizeof h);
memset(g,0,sizeof g);
NTT::init(lim);
for(int i=1;i<=n;i++) f[0][w[i]+n] = 1;
for(int i=1;i<=18;i++){
NTT::tms(f[i-1],f[i-1],h,lim);
for(int j=0;j<2*n+1;j++) f[i][j] = h[j+n]?1:0;
}
g[n] = 1;
for(int i=0;i<=18;i++){
if((n>>i)&1){
NTT::tms(f[i],g,h,lim);
for(int j=0;j<2*n+1;j++) g[j] = h[j+n]?1:0;
}
// for(int j=0;j<lim;j++) printf("%d ",f[i][j]);puts("");
}
if(g[n+m]) puts("Yes");
else puts("No");
}
int main(){
// freopen("ex.in","r",stdin);
int _;
scanf("%d",&_);
while(_--){
solve();
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 33544kb
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: 242ms
memory: 34524kb
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 No No No No No No Yes Yes Yes Yes Yes Yes Yes No No No No No No Yes No Yes No 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 Yes...
result:
wrong answer expected YES, found NO [179th token]