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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#375824 | #6631. Maximum Bitwise OR | World_Creater | WA | 126ms | 54884kb | C++14 | 2.2kb | 2024-04-03 16:15:34 | 2024-04-03 16:15:35 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
int n,q,a[100005],f[100005][31],lst[100005][31];
int lis[35],idx;
struct segtree{
int tree[400005];
#define lc(x) (x<<1)
#define rc(x) (x<<1|1)
#define M(l,r) ((l+r)>>1)
void pushup(int p)
{
tree[p]=tree[lc(p)]|tree[rc(p)];
}
void modify(int p,int l,int r,int x,int y)
{
if(l==r)
{
tree[p]=y;
return ;
}
int mid=M(l,r);
if(x<=mid) modify(lc(p),l,mid,x,y);
else modify(rc(p),mid+1,r,x,y);
pushup(p);
}
int query(int p,int l,int r,int L,int R)
{
if(L<=l&&r<=R) return tree[p];
int mid=M(l,r),res=0;
if(L<=mid) res=query(lc(p),l,mid,L,R);
if(mid<R) res|=query(rc(p),mid+1,r,L,R);
return res;
}
void clear(int p,int l,int r)
{
tree[p]=0;
if(l==r) return ;
int mid=M(l,r);
clear(lc(p),l,mid);
clear(rc(p),mid+1,r);
}
}T[31],G;
int main()
{
int t;
cin>>t;
while(t--)
{
cin>>n>>q;
for(int i=1;i<=n;i++)
{
cin>>a[i];
G.modify(1,1,n,i,a[i]);
for(int j=30;j>=0;j--)
{
if((1<<j)<=a[i])
{
f[i][j]=a[i]^(a[i]-(1<<j));
T[j].modify(1,1,n,i,f[i][j]);
}
else f[i][j]=0;
if((a[i]>>j)&1) lst[i][j]=j;
else lst[i][j]=lst[i-1][j];
}
}
while(q--)
{
int l,r,res=2;
cin>>l>>r;
int Or=G.query(1,1,n,l,r),ans=(1ll<<(__lg(Or)+1))-1;
if(Or==ans)
{
cout<<ans<<" "<<0<<"\n";
continue ;
}
idx=0;
for(int i=30;i>=0;i--)
{
if(!((Or>>i)&1)) continue ;
if(lst[lst[r][i]-1][i]<l) continue ;
for(int j=30;j>=0;j--)
{
T[j].modify(1,1,n,f[lst[r][i]][j],0);
}
lis[++idx]=lst[r][i];
}
for(int i=1;i<=idx;i++)
{
int por=0,sor=0;
if(lis[i]>l) por=G.query(1,1,n,l,lis[i]-1);
if(lis[i]<r) sor=G.query(1,1,n,lis[i+1],r);
for(int j=30;j>=0;j--)
{
if((f[lis[i]][j]|por|sor)==ans) res=1;
}
}
// for(int i=30;i>=0;i--)
// {
// if(T[i].query(1,1,n,l,r)==ans) res=1;
// }
for(int i=1;i<=idx;i++)
{
for(int j=30;j>=0;j--)
{
T[i].modify(1,1,n,lis[i],f[lis[i]][j]);
}
}
cout<<ans<<" "<<res<<"\n";
}
for(int i=30;i>=0;i--) T[i].clear(1,1,n);
G.clear(1,1,n);
}
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 54816kb
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: 0
Accepted
time: 120ms
memory: 52780kb
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 268435455 2 536870911 2 1073741823 2 536870911 2 1073741823 2 536870911 2 1073741823 2 268435455 2 268435455 2 536870911 2 67108863 2 134217727 2 1073741823 2 536870911 2 536870911 2 268435455 2 536870911 2 536870911 2 536870911 2 268435455 2 268435455 2 1073741823 2 16777215 2 10737418...
result:
ok 200000 numbers
Test #3:
score: -100
Wrong Answer
time: 126ms
memory: 54884kb
input:
50000 2 2 924896435 917026400 1 2 1 2 2 2 322948517 499114106 1 2 2 2 2 2 152908571 242548777 1 1 1 2 2 2 636974385 763173214 1 2 1 1 2 2 164965132 862298613 1 1 1 2 2 2 315078033 401694789 1 2 1 2 2 2 961358343 969300127 2 2 1 2 2 2 500628228 28065329 1 2 1 2 2 2 862229381 863649944 1 2 2 2 2 2 541...
output:
1073741823 2 1073741823 2 536870911 2 536870911 2 268435455 2 268435455 2 1073741823 2 1073741823 2 268435455 2 1073741823 2 536870911 2 536870911 2 1073741823 2 1073741823 2 536870911 2 536870911 2 1073741823 2 1073741823 2 1073741823 2 268435455 2 536870911 2 536870911 2 1073741823 2 1073741823 2 ...
result:
wrong answer 135602nd numbers differ - expected: '2', found: '1'