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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#134891 | #6631. Maximum Bitwise OR | Rd_rainydays# | WA | 41ms | 20164kb | C++20 | 2.0kb | 2023-08-05 09:46:48 | 2023-08-05 09:46:52 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
#define REP(i,a,b) for(int i=(a),i##_end_=(b);i<i##_end_;++i)
void Rd(int &x){
char c;x=0;
while((c=getchar())<'0');
do
{
x=(x<<3)+(x<<1)+(c^'0');
/* code */
} while ((c=getchar())>='0');
}
static const int M=100003;
int T,n,q;
int S[M][31],A[M];
int Ans[M],tim[M],R[M];
vector<int>Q[M];
int MX[31][M];
int main(){
Rd(T);
while(T--){
Rd(n),Rd(q);
REP(i,1,n+1){
int x;
Rd(x);A[i]=x;
REP(j,0,31)S[i][j]=S[i-1][j]+((x>>j)&1);
}
REP(i,1,n+1)Q[i].clear();
REP(j,0,31)REP(i,1,n+1)MX[j][i]=0;
REP(i,0,q){
int l,r;
Rd(l),Rd(r);
Ans[i]=tim[i]=-1;
for(int j=30;j>=0;--j){
if(S[r][j]-S[l-1][j]){
Ans[i]=j;
bool f=1;
for(int k=j-1;k>=0;--k){
f&=(S[r][k]-S[l-1][k])>0;
//cout<<S[r][k]<<','<<S[l-1][k]<<endl;
}
tim[i]=f?0:2;
break;
}
}
if(tim[i]==2){
Q[l].push_back(i);
R[i]=r;
}
}
for(int i=n;i>=1;--i){
int lt=-1,a=A[i];
for(int j=0;j<=30;++j){
if((a>>j)&1){
if(lt!=j-1){
lt++;
int u=i;
while(u<=n)
MX[lt][u]=max(MX[lt][u],j),u+=u&-u;
}
lt=j;
}
}
for(auto p:Q[i]){
int r=R[p],lp=-1,rp=-1;
for(int j=0;j<=Ans[p];++j)
if(S[r][j]-S[i-1][j]==0){
lp=j;break;
}
for(int j=Ans[p];j>=0;--j)
if(S[r][j]-S[i-1][j]==0){
rp=j;break;
}
for(int j=0;j<=lp;++j){
int u=r,mx=0;
while(u)
mx=max(mx,MX[j][u]),u^=u&-u;
//cerr<<i<<','<<p<<','<<j<<','<<mx<<','<<rp<<endl;
if(mx>rp){
tim[p]=1;
break;
}
}
}
}
REP(i,0,q)if(Ans[i]==-1)puts("0 0");
else printf("%d %d\n",(1<<Ans[i]+1)-1,tim[i]);
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 2ms
memory: 20164kb
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: 41ms
memory: 20036kb
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: 31ms
memory: 18128kb
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 1556th numbers differ - expected: '2', found: '1'