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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#376504 | #6631. Maximum Bitwise OR | fzx | WA | 160ms | 20016kb | C++14 | 4.0kb | 2024-04-04 10:51:45 | 2024-04-04 10:51:46 |
Judging History
answer
#include <bits/stdc++.h>
#define int long long
#define pb push_back
using namespace std;
const int INF=1e5+5;
int n,q,a[INF],d[35],vis[INF];
vector <int> e2[35];
struct Segment{
#define ll tl[id]
#define rr tr[id]
#define ls(x) x<<1
#define rs(x) x<<1|1
int tl[INF<<2],tr[INF<<2],sum[INF<<2][35];
void push_up(int id) {
for (int i=0;i<30;i++)
sum[id][i]=max(sum[ls(id)][i],sum[rs(id)][i]);
}
void build(int l,int r,int id) {
ll=l;rr=r;
if (ll==rr) {
int r=0;
for (int i=0;i<30;i++) {
if ((a[ll]>>i)&1) {sum[id][i]=-1;r=i;continue;}
while (r+1<30 && !((a[ll]>>(r+1))&1)) r++;
sum[id][i]=r;
}
return ;
}
int Mid=(ll+rr)>>1;
build(ll,Mid,ls(id));
build(Mid+1,rr,rs(id));
push_up(id);
}
void add(int l,int r,int v,int id) {
if (l<=ll && rr<=r) {
if (v==1) {
for (int i=0;i<30;i++)
sum[id][i]=d[i];
}
else {
int r=0;
for (int i=0;i<30;i++) {
if ((a[ll]>>i)&1) {sum[id][i]=-1;r=i;continue;}
while (r+1<30 && !((a[ll]>>(r+1))&1)) r++;
sum[id][i]=r;
}
}
return ;
}
int Mid=(ll+rr)>>1;
if (l<=Mid) add(l,r,v,ls(id));
if (Mid<r) add(l,r,v,rs(id));
push_up(id);
}
void query(int l,int r,int Max,int id) {
if (l<=ll && rr<=r) {
d[Max]=max(d[Max],sum[id][Max]);
return ;
}
int Mid=(ll+rr)>>1;
if (l>Mid) query(l,r,Max,rs(id));
else if (r<=Mid) query(l,r,Max,ls(id));
else {query(l,r,Max,ls(id)),query(l,r,Max,rs(id));}
}
#undef ll
#undef rr
#undef ls
#undef rs
}T1;
void solve() {
cin>>n>>q;
for (int i=1;i<=n;i++) cin>>a[i];
for (int i=1;i<=n;i++) {
for (int j=0;j<30;j++)
if ((a[i]>>j)&1) e2[j].pb(i);
}
T1.build(1,n,1);
for (int i=1;i<=q;i++) {
int l=0,r=0;
cin>>l>>r;
int Min=30,Max=-1,fl=0,R=0;
for (int j=0;j<30;j++) {
int x=upper_bound(e2[j].begin(),e2[j].end(),r)-lower_bound(e2[j].begin(),e2[j].end(),l);
if (!x) Min=min(Min,j),Max=max(Max,j);
if (x==1) vis[*lower_bound(e2[j].begin(),e2[j].end(),l)]++;
if (x) R=max(R,j);
}
if (Min>R) {cout<<((1ll<<(R+1))-1)<<" 0\n";continue;}
cout<<((1ll<<(R+1))-1)<<" ";
for (int j=0;j<=R;j++) {
int x=upper_bound(e2[j].begin(),e2[j].end(),r)-lower_bound(e2[j].begin(),e2[j].end(),l);
if (x==1) {
int xx=*lower_bound(e2[j].begin(),e2[j].end(),l);
if (vis[xx]>1) {
for (int p=0;p<30;p++) d[p]=0;
T1.add(xx,xx,1,1);
}
else {
int L=j;
for (int p=j-1;p>=0;p--)
if (!((a[xx]>>p)&1)) L=p;
if (L<=Min && Max<=j) fl=1;
for (int p=0;p<30;p++) d[p]=0;
T1.add(xx,xx,1,1);
}
}
}
for (int p=0;p<30;p++) d[p]=0;
T1.query(l,r,Min,1);
if (d[Min]>=Max) fl=1;
for (int j=0;j<30;j++) {
int x=upper_bound(e2[j].begin(),e2[j].end(),r)-lower_bound(e2[j].begin(),e2[j].end(),l);
if (x==1) {
int xx=*lower_bound(e2[j].begin(),e2[j].end(),l);
T1.add(xx,xx,2,1);
}
}
if (Min>Max) cout<<"0\n";
else if (fl) cout<<"1\n";
else cout<<"2\n";
}
}
signed main()
{
ios::sync_with_stdio(false);
int t=0;cin>>t;
while (t--) solve();
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 1ms
memory: 9808kb
input:
1 3 2 10 10 5 1 2 1 3
output:
15 2 15 0
result:
ok 4 number(s): "15 2 15 0"
Test #2:
score: -100
Wrong Answer
time: 160ms
memory: 20016kb
input:
100000 1 1 924704060 1 1 1 1 149840457 1 1 1 1 515267304 1 1 1 1 635378394 1 1 1 1 416239424 1 1 1 1 960156404 1 1 1 1 431278082 1 1 1 1 629009153 1 1 1 1 140374311 1 1 1 1 245014761 1 1 1 1 445512399 1 1 1 1 43894730 1 1 1 1 129731646 1 1 1 1 711065534 1 1 1 1 322643984 1 1 1 1 482420443 1 1 1 1 20...
output:
1073741823 2 1073741823 2 1073741823 2 1073741823 0 1073741823 0 1073741823 0 1073741823 0 1073741823 0 1073741823 0 1073741823 0 1073741823 0 1073741823 0 1073741823 0 1073741823 0 1073741823 0 1073741823 0 1073741823 0 1073741823 0 1073741823 0 1073741823 0 1073741823 0 1073741823 0 1073741823 0 1...
result:
wrong answer 3rd numbers differ - expected: '268435455', found: '1073741823'