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QOJ
ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#21386 | #2819. 摆家具 | glory_to_the_qy# | WA | 363ms | 98064kb | C++11 | 2.4kb | 2022-03-04 18:15:48 | 2022-05-08 02:58:44 |
Judging History
answer
#include<bits/stdc++.h>
#define int long long
using namespace std;
typedef long long ll;
const int Mod=998244353;
int n,k,Q,m;
ll C[22][22],inv[22][22];
ll dp[2][22][1100000],pw[110];
ll qpow(ll x,int a){
ll res=1;
while (a){
if (a&1) res=res*x%Mod;
x=x*x%Mod; a>>=1;
}
return res;
}
struct Matrix{
ll v[20][20];
Matrix(){ memset(v,0,sizeof(v));}
void init(){
for (int i=0;i<20;i++) v[i][i]=1;
}
Matrix operator*(const Matrix &a) const{
Matrix res;
for (int i=0;i<20;i++)
for (int k=0;k<20;k++)
if (v[i][k])
for (int j=0;j<20;j++)
res.v[i][j]=(res.v[i][j]+v[i][k]*a.v[k][j])%Mod;
return res;
}
} A,q[4100];
struct Vector{
ll v[20];
Vector(){ memset(v,0,sizeof(v));}
Vector operator*(const Matrix &a) const{
Vector res;
for (int k=0;k<20;k++)
if (v[k])
for (int j=0;j<20;j++)
res.v[j]=(res.v[j]+v[k]*a.v[k][j])%Mod;
return res;
}
} p[310000],res;
int bit(int s,int i){ return s/pw[i]%n;}
int calc(int s,int i,int x){ return pw[i]*x+s;}
signed main(){
ios::sync_with_stdio(false);
cin.tie(0); cout.tie(0);
for (int i=0;i<20;i++){
C[i][0]=1;
for (int j=1;j<=i;j++) C[i][j]=(C[i-1][j-1]+C[i-1][j])%Mod;
}
for (int i=0;i<20;i++)
for (int j=0;j<=i;j++) inv[i][j]=qpow(C[i][j],Mod-2);
cin>>n>>k>>Q; pw[0]=1;
for (int i=1;i<=k;i++) pw[i]=pw[i-1]*n;
m=pw[k]; int now=0;
for (int i=0;i<m;i++) cin>>dp[0][0][i];
for (int i=0;i<k;i++){//bit i(0..k-1)
now^=1;
for (int s=0;s<=m;s++)
for (int j=0;j<=i+1;j++)
dp[now][j][s]=dp[now^1][j][s];
for (int s=0;s<=m;s++)//status s(without i)
if (!bit(s,i))
for (int j=0;j<=i;j++){//dif j
ll res=0;
for (int x=0;x<n;x++) res=(res+dp[now^1][j][calc(s,i,x)])%Mod;
// cerr<<res<<endl;
for (int x=0;x<n;x++) dp[now][j+1][calc(s,i,x)]=(dp[now][j+1][calc(s,i,x)]+(res+Mod-dp[now^1][j][calc(s,i,x)]))%Mod;
}
}
for (int i=0;i<20;i++){
if (i&&i<=k) A.v[i][i-1]=i;
if (i<k) A.v[i][i+1]=k-i;
}
p[0].v[0]=1;
for (int i=0;i<(1<<18);i++) p[i+1]=p[i]*A;
q[0].init(); int t=18;
while (t--) A=A*A;
for (int i=0;i<=4000;i++) q[i+1]=q[i]*A;
ll lastans=1,a,b;
while (Q--){
cin>>a>>b; b=b*lastans%Mod;
res=p[b&((1<<18)-1)]*q[b>>18];
ll ans=0;
for (int i=0;i<=k;i++)
ans=(ans+inv[k][i]*dp[now][i][a]%Mod*res.v[i])%Mod;
cout<<ans<<endl; lastans=ans;
}
return 0;
}
详细
Test #1:
score: 0
Wrong Answer
time: 363ms
memory: 98064kb
input:
6 7 23333 691899807 511100503 969237388 938904792 350428599 320423686 227132681 288051232 833056445 128207711 81740114 850060462 194951182 130925016 505452669 304380595 703105541 640122112 75295756 128144693 482592240 835507949 68960843 807876145 6134269 259053259 386495729 193956365 370675670 12980...
output:
87338862 902184791 369861873 682826537 913891032 197381451 575847310 631413540 854149944 661645057 236871568 93999707 804377480 342550672 303776602 860922126 198414071 141969541 466533755 758109943 667626188 365523002 792199025 569758987 877681019 591413001 178788775 231540786 939863235 607718635 45...
result:
wrong answer 1st lines differ - expected: '190581075', found: '87338862'