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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#463149 | #6631. Maximum Bitwise OR | grass8cow# | WA | 235ms | 8208kb | C++17 | 1.8kb | 2024-07-04 14:29:04 | 2024-07-04 14:29:05 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
int n,q,a[100100],l1[101000][30],l2[101000][30][30];
void sol(){
scanf("%d%d",&n,&q);
for(int i=1;i<=n;i++)scanf("%d",&a[i]);
for(int j=0;j<30;j++)l1[n+1][j]=n+1;
for(int j=0;j<30;j++)for(int k=j;k<30;k++)l2[n+1][j][k]=n+1;
for(int i=n;i;i--){
for(int j=0;j<30;j++)if((a[i]>>j)&1)l1[i][j]=i;else l1[i][j]=l1[i+1][j];
int t=-1;
for(int j=0;j<30;j++)for(int k=j;k<30;k++)
l2[i][j][k]=l2[i+1][j][k];
for(int j=0;j<30;j++)if((a[i]>>j)&1){
for(int x=t+2;x<=j;x++)
for(int y=x;y<=j;y++)
l2[i][x][y]=i;
t=j;
}
}
for(int io=1,l,r;io<=q;io++){
scanf("%d%d",&l,&r);
int z=-1;
for(int j=29;j>=0;j--)if(l1[l][j]<=r){z=j;break;}
printf("%d ",(1<<(z+1))-1);
vector<int>vp;vp.push_back(l-1),vp.push_back(r+1);
int kl=32,kr=-1,st=0;
for(int j=z;j>=0;j--)if(l1[l][j]<=r){
st|=(1<<j);
int x=l1[l][j];
if(l1[x+1][j]>r)vp.push_back(x);
}
else kl=min(kl,j),kr=max(kr,j);
if(kr==-1){puts("0");continue;}
sort(vp.begin(),vp.end());
bool oo=0;
for(int j=0;j+1<vp.size();j++){
int x=vp[j],y=vp[j+1];if(x==y||x+1==y)continue;
x++,y--;
if(l2[x][kl][kr]<=y){oo=1;break;}
}
for(int x:vp){
if(x<l||x>r)continue;
int sk=st;
for(int i=0;i<30;i++)if(l1[l][i]==x&&l1[x+1][i]>r)sk^=(1<<i);
for(int i=0;i<30;i++){
if((1<<i)>a[x])break;
if(sk|(a[x]^(a[x]-(1<<i)))==((1<<(z+1))-1))oo=1;
}
}
if(oo)puts("1");else puts("2");
}
}
int main(){
int T;scanf("%d",&T);while(T--)sol();
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 1ms
memory: 8208kb
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: 233ms
memory: 5860kb
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: 235ms
memory: 6164kb
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 1 1073741823 1 536870911 1 536870911 2 268435455 2 268435455 1 1073741823 1 1073741823 2 268435455 2 1073741823 1 536870911 1 536870911 1 1073741823 2 1073741823 1 536870911 1 536870911 1 1073741823 1 1073741823 2 1073741823 1 268435455 2 536870911 2 536870911 2 1073741823 1 1073741823 2 ...
result:
wrong answer 2nd numbers differ - expected: '2', found: '1'