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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#190446 | #6631. Maximum Bitwise OR | qzhwlzy | WA | 163ms | 116824kb | C++14 | 2.3kb | 2023-09-28 21:31:35 | 2023-09-28 21:31:35 |
Judging History
answer
#include<iostream>
#include<cstdio>
#include<cstring>
#include<vector>
#define maxn 100005
#define maxm 35
using namespace std;
int T,n,q,in[maxn],l,r,val[maxn]; bool uni[maxn]; int calc(int val,int bit){return val^(val-(1<<bit));}
struct node{
int spe[maxm],mmax[maxm],l,r; node(){memset(spe,0,sizeof(spe)); memset(mmax,0,sizeof(mmax));}
node operator += (const node &x){
for(int i=0;i<maxm;i++) mmax[i]=max(mmax[i],x.mmax[i]);
vector<int> del; for(int i=0;i<maxm;i++) if(!spe[i]||!x.spe[i])
{if(spe[i]>0) uni[spe[i]]=1,del.push_back(spe[i]); if(x.spe[i]>0) uni[x.spe[i]]=1,del.push_back(x.spe[i]);}
for(int i=0;i<maxm;i++) if(spe[i]&&x.spe[i]){
if(spe[i]>0&&!uni[spe[i]]) for(int j=0;j<maxm&&(1<<j)<=in[spe[i]];j++) mmax[i]=max(mmax[i],calc(in[spe[i]],j));
if(x.spe[i]>0&&!uni[x.spe[i]])
{for(int j=0;j<maxm&&(1<<j)<=in[x.spe[i]];j++) mmax[i]=max(mmax[i],calc(in[x.spe[i]],j));} spe[i]=-1;
}else spe[i]|=x.spe[i]; for(auto i:del) uni[i]=0; return *this;
}
node operator + (const node &a)const{
return node(*this)+=a;
}
}a[maxn*4];
void pushup(int p){a[p]=a[p<<1]+a[p<<1|1];}
void build(int p,int l,int r){
a[p].l=l; a[p].r=r; if(l==r)
{for(int i=0;i<maxm;i++) a[p].mmax[i]=0,a[p].spe[i]=(in[l]&(1<<i))?l:0; return;}
build(p<<1,l,(l+r)>>1); build(p<<1|1,((l+r)>>1)+1,r); pushup(p); a[p].l=l; a[p].r=r;
}
node query(int p,int l,int r){
if(l<=a[p].l&&r>=a[p].r) return a[p]; node res;
if(r<=a[p<<1].r) return query(p<<1,l,r); if(l>=a[p<<1|1].l) return query(p<<1|1,l,r);
return query(p<<1,l,r)+query(p<<1|1,l,r);
}
int main(){
scanf("%d",&T); while(T--){
scanf("%d%d",&n,&q); for(int i=1;i<=n;i++) scanf("%d",&in[i]),uni[i]=0;
build(1,1,n); while(q--){
scanf("%d%d",&l,&r); node x=query(1,l,r); int now=0;
for(int i=0;i<maxm;i++) now|=(x.spe[i]!=0)*(1<<i); int ans=1;
for(;ans<=now;ans*=2); ans--; printf("%d ",ans); if(now==ans){printf("0\n"); continue;}
bool flag=0; for(int i=0;i<maxm;i++) if((now|x.mmax[i])==ans){printf("1\n"); flag=1; break;}
for(int i=0;i<maxm&&!flag;i++) if(x.spe[i]>0) val[x.spe[i]]|=(1<<i);
for(int i=0;i<maxm&&!flag;i++) if(x.spe[i]>0&&val[x.spe[i]]){
int res=now^val[x.spe[i]]; for(int j=0;j<maxm&&(1<<j)<=in[x.spe[i]];j++)
if((res|calc(in[x.spe[i]],j))==ans){printf("1\n"); flag=1; break;} val[x.spe[i]]=0;
} if(!flag) printf("2\n");
}
} return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 12ms
memory: 116824kb
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: 68ms
memory: 116292kb
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: 0
Accepted
time: 135ms
memory: 116264kb
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:
ok 200000 numbers
Test #4:
score: -100
Wrong Answer
time: 163ms
memory: 116248kb
input:
33333 3 3 925088809 339284112 289540728 3 3 1 3 1 1 3 3 422399522 892365243 216341776 3 3 3 3 1 2 3 3 668932010 837523227 840095874 1 3 1 3 3 3 3 3 731584574 357877180 359063739 1 1 1 1 3 3 3 3 463358343 833924976 847087403 2 3 3 3 1 2 3 3 377154649 772000701 656357011 2 3 1 2 2 3 3 3 977492169 5540...
output:
536870911 2 1073741823 2 1073741823 2 268435455 2 268435455 2 1073741823 2 1073741823 2 1073741823 2 1073741823 2 1073741823 2 1073741823 2 536870911 2 1073741823 2 1073741823 2 1073741823 2 1073741823 2 1073741823 2 1073741823 2 1073741823 2 1073741823 2 1073741823 2 67108863 2 1073741823 2 1073741...
result:
wrong answer 5770th numbers differ - expected: '1', found: '2'