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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 |
---|---|---|---|---|---|---|---|---|---|
#828443 | #9245. Bracket Sequence | Nityacke | WA | 780ms | 124352kb | C++20 | 2.1kb | 2024-12-23 16:41:12 | 2024-12-23 16:41:13 |
Judging History
answer
#include<bits/stdc++.h>
#define pb push_back
#define Qry array<int,5>
using namespace std;
const int N=1e5+5,K=45,H=998244353;
int n,m,a[N],ans[N*10],f[N][K][2],g[N][K][2];
inline void add(int &x,int y){if((x+=y)>=H) x-=H;}
inline void clear(int l,int r){
for(int i=l;i<=r;++i)
for(int j=0;j<=40;++j) for(int c=0;c<2;++c) f[i][j][c]=g[i][j][c]=0;
}
inline void dp(int l,int mid,int r){
for(int i=mid;i>=l;--i)
for(int j=0;j<=40;++j)
add(f[i][j+1][a[i]],f[i+1][j][!a[i]]),add(f[i][j][0],f[i+1][j][0]),add(f[i][j][1],f[i+1][j][1]);
for(int i=mid+1;i<=r;++i)
for(int j=0;j<=40;++j)
add(g[i][j+1][a[i]],g[i-1][j][!a[i]]),add(g[i][j][0],g[i-1][j][0]),add(g[i][j][1],g[i-1][j][1]);
}
inline void Pre(int l,int mid,int r){
for(int i=mid;i>=l;--i)
for(int j=0;j<=40;++j) for(auto c:{0,1}) add(f[i][j][c],f[i+1][j][c]);
for(int i=mid+1;i<=r;++i)
for(int j=0;j<=40;++j) for(auto c:{0,1}) add(g[i][j][c],g[i-1][j][c]);
}
inline void solve(int l,int r,vector<Qry>&Q){
if(l==r||!Q.size()) return;
vector<Qry>ql,qr,vec;
int mid=(l+r)>>1;
for(auto v:Q)
if(v[2]<=mid) ql.pb(v);
else if(v[1]>mid) qr.pb(v);
else vec.pb(v);
Q.clear(),solve(l,mid,ql),solve(mid+1,r,qr);
if(!vec.size()) return;
clear(l,r);
for(auto c:{0,1}) f[mid+1][0][c]=g[mid][0][c]=1;
dp(l,mid,r);
for(auto v:vec) if(v[0]==1){
int nd=v[3]<<1;
for(int j=0;j<=nd;++j)
add(ans[v[4]],1ll*f[v[1]][j][0]*g[v[2]][nd-j][1]%H);
}
Pre(l,mid,r);
for(auto v:vec) if(v[0]==2){
int nd=v[3]<<1;
for(int j=0;j<=nd;++j)
add(ans[v[4]],1ll*f[v[1]][j][0]*g[v[2]][nd-j][1]%H);
}
clear(l,r);
for(int i=mid;i>=l;i--) for(int c:{0,1}) f[i][0][c]=1;
for(int i=mid+1;i<=r;i++) for(int c:{0,1}) g[i][0][c]=1;
dp(l,mid,r),Pre(l,mid,r);
for(auto v:vec)
if(v[0]==2) add(ans[v[4]],f[v[1]][v[3]<<1][0]),add(ans[v[4]],f[v[2]][v[3]<<1][1]);
}
vector<Qry>Q;
char C;
signed main(){
ios::sync_with_stdio(false);
cin.tie(0),cout.tie(0);
cin>>n>>m,Q.resize(m);
for(int i=1;i<=n;++i) cin>>C,a[i]=(C==')');
for(int op,l,r,k,i=0;i<m;++i) cin>>op>>l>>r>>k,Q[i]={op,l,r,k,i};
solve(1,n,Q);
for(int i=0;i<m;++i) cout<<ans[i]<<"\n";
}
详细
Test #1:
score: 100
Accepted
time: 0ms
memory: 5648kb
input:
5 20 (()() 1 1 2 1 1 1 3 1 1 1 4 1 1 1 5 1 1 2 3 1 1 2 4 1 1 2 5 1 1 3 4 1 1 3 5 1 1 4 5 1 2 1 3 1 2 1 4 1 2 1 5 1 2 2 3 1 2 2 4 1 2 2 5 1 2 3 5 1 2 4 5 1 1 1 5 2 2 1 5 2
output:
0 2 2 5 1 1 3 0 1 1 3 6 16 1 2 7 2 1 2 3
result:
ok 20 lines
Test #2:
score: -100
Wrong Answer
time: 780ms
memory: 124352kb
input:
100000 1000000 )())))))())()()()(())))()())))()))))())))))()(()()))()()))((()()))()))((())(())())()(()))))()))(()()()()()(())(()((()))()((()(()))()))()))()()))(())))()()(()(()())())((()((()((())()(()()))())(())())())))))))((())(((()(())())))(()(((())())))(((((((((()))()())())(()))(())()()()()((()())...
output:
807252937 606928536 88031079 122104482 597950507 716633829 810056267 719234156 392529556 736028324 426329153 576581877 315566541 444655931 76394527 216715407 31336797 926955022 529925464 302716489 498728925 1522883 192687717 78253278 690761534 503000238 605305965 33700395 340780822 88050137 23962861...
result:
wrong answer 2nd lines differ - expected: '333653009', found: '606928536'