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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#281221 | #7765. Xor Master | songziyan | 0 | 374ms | 95368kb | C++23 | 3.5kb | 2023-12-09 23:16:40 | 2023-12-09 23:16:41 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
#define int long long
#define ull unsigned long long
const int N=1e6+5;
int n,q;
ull a[N],g[N];
ull min(ull x,ull y){return x<y?x:y;}
ull max(ull x,ull y){return x>y?x:y;}
struct basis{
ull s[70];
ull insert(ull x){
for(int i=63;i>=0;i--)if((x>>i)&1){
if(!s[i]){
for(int j=i-1;j>=0;j--)
if((x>>j)&1)x^=s[j];
s[i]=x;
for(int j=63;j>i;j--)
if((s[j]>>i)&1)s[j]^=x;
return x;
}
x^=s[i];
}
return 0;
}
ull qrymin(ull x){
for(int i=63;i>=0;i--)x=min(x,x^s[i]);
return x;
}
ull qrymax(ull x){
for(int i=63;i>=0;i--)x=max(x,x^s[i]);
return x;
}
}bas;
struct bit{
ull a[N];
void add(int x,ull v){
for(;x<=n;x+=(x&(-x)))
a[x]^=v;
}
ull sum(int x){
ull res=0;
for(;x;x-=(x&(-x)))
res^=a[x];
return res;
}
void init(){
memset(a,0,sizeof(a));
}
}c;
struct tree{
#define lc x<<1
#define rc x<<1|1
ull tmp[N<<4],*p=tmp;
ull *tr[N<<2],tag[N<<2],sum[N<<2];
int tot[N<<2],len[N<<2];
void pushup(int x){
ull k=0;
for(int i=0;i<tot[x];i++){
tr[x][i]=tr[lc][i]^tr[rc][i]^k;
k=(tr[lc][i]&tr[rc][i])|(tr[lc][i]&k)|(tr[rc][i]&k);
}
sum[x]=sum[lc]+sum[rc];
}
void addtag(int x,ull v){
tag[x]^=v;
sum[x]=0;
ull k=0;
for(int i=0;i<tot[x];i++){
ull t=k;
if((len[x]>>i)&1){
k=k&(tr[x][i]&v);
tr[x][i]=tr[x][i]^t^v;
}else{
k=k|(tr[x][i]&v);
tr[x][i]=tr[x][i]^t;
}
sum[x]+=(tr[x][i]<<i);
}
}
void pushdown(int x){
if(tag[x]){
addtag(lc,tag[x]);
addtag(rc,tag[x]);
tag[x]=0;
}
}
void build(int x,int l,int r){
tag[x]=0;
len[x]=r-l+1;tot[x]=1;
while((1<<tot[x])<=len[x])++tot[x];
tr[x]=p;p+=tot[x]+1;
if(l==r){
tr[x][0]=sum[x]=bas.qrymax(g[l]);
//printf("%llu ",tr[x][0]);
return;
}
int mid=(l+r)>>1;
build(lc,l,mid);
build(rc,mid+1,r);
pushup(x);
}
void upd(int x,int l,int r,int ql,int qr,ull v){
if(!v)return;
if(ql<=l&&r<=qr)return addtag(x,v);
pushdown(x);
int mid=(l+r)>>1;
if(ql<=mid)upd(lc,l,mid,ql,qr,v);
if(qr>mid)upd(rc,mid+1,r,ql,qr,v);
pushup(x);
}
ull qry(int x,int l,int r,int ql,int qr){
if(ql<=l&&r<=qr)return sum[x];
pushdown(x);
int mid=(l+r)>>1;
ull res=0;
if(ql<=mid)res+=qry(lc,l,mid,ql,qr);
if(qr>mid)res+=qry(rc,mid+1,r,ql,qr);
return res;
}
void rbuild(int x,int l,int r){
tag[x]=0;
if(l==r){
tr[x][0]=sum[x]=bas.qrymax(g[l]);
return;
}
int mid=(l+r)>>1;
rbuild(lc,l,mid);
rbuild(rc,mid+1,r);
pushup(x);
}
}T;
void init(){
cin>>n>>q;
for(int i=1;i<=n;i++)
cin>>a[i];
for(int i=1;i<=n;i++){
g[i]=g[i-1]^a[i];
c.add(i,a[i]);
}
T.build(1,1,n);
}
void opt1(int x,ull v){
a[x]^=v;
c.add(x,v);
T.upd(1,1,n,x,n,bas.qrymin(v));
}
void opt2(ull v){
if(bas.insert(v)){
c.init();
for(int i=1;i<=n;i++){
g[i]=g[i-1]^a[i];
c.add(i,a[i]);
}
T.rbuild(1,1,n);
}
}
ull opt3(int ql,int qr){
ull pre=c.sum(ql-1);
ull v=bas.qrymin(pre);
T.upd(1,1,n,ql,qr,v);
ull ans=T.qry(1,1,n,ql,qr);
T.upd(1,1,n,ql,qr,v);
return ans;
}
signed main(){
ios::sync_with_stdio(false);
cin.tie(0);cout.tie(0);
init();
int cnt=0;
while(q--){
++cnt;
string op;
int x,l,r;ull v;
cin>>op;
if(op=="1"){
cin>>x>>v;
opt1(x,v);
}
if(op=="2"){
cin>>x;
opt2(x);
}
if(op=="3"){
cin>>l>>r;
cout<<opt3(l,r)<<'\n';
}
}
if(n=500000)cout<<cnt;
return 0;
}
/*
*/
Details
Tip: Click on the bar to expand more detailed information
Subtask #1:
score: 0
Wrong Answer
Test #1:
score: 0
Wrong Answer
time: 0ms
memory: 25108kb
input:
2000 2000 1860495733 462603674 3739839441 759356520 47330263 550811730 2301200895 989240351 2499503801 2624225494 2123076812 1180966826 238739434 488666688 784742950 2583466952 4111371941 2335988605 2583741355 933716686 1644403538 1970423306 304500250 905101643 1814942168 1136358764 88729799 1577263...
output:
867006634793 3418049036989 1658469159497 794670034691 239792547603 1587489101990 592222190840 1343829229567 971235609706 571701308760 1219913933321 588622962923 2129364200509 1007100395808 3134493164996 3145027621038 2599298085956 1729302186341 837940435945 242569415869 2908005634977 1692554597386 1...
result:
wrong output format Extra information in the output file
Subtask #2:
score: 0
Wrong Answer
Test #5:
score: 0
Wrong Answer
time: 374ms
memory: 95368kb
input:
500000 100000 12261386944926786495 7846697792998647383 16622924885320463714 170129022271213944 12625257523700625864 7684671687986103560 11532026873918423068 1131776055566669037 8263146651412710501 17872572061246021001 5017109039248728310 11088626167542318645 13810119722795416818 10928315716094262229...
output:
12337138966997790840 11593856511006775316 5653988472748567965 6281173414355612100 18027435777450732541 2903343914316621940 9422461876307420631 76690753587353877 798850376670823348 10137130634921141648 13914431888234873359 10192090671035653185 11569745711967074397 12303071505845046803 637460082558284...
result:
wrong output format Extra information in the output file
Subtask #3:
score: 0
Skipped
Dependency #2:
0%
Subtask #4:
score: 0
Wrong Answer
Test #15:
score: 0
Wrong Answer
time: 220ms
memory: 43420kb
input:
100000 100000 860905160 3192911636 290327446 2020707113 959258245 454185039 421895589 1070265496 2218913641 1684685660 1206723673 2606734467 4247254571 3341954386 3805299640 1702270353 2472053741 2816060613 1307901348 2702949728 879391505 884661815 330738731 1575749344 1239158446 2099693858 67466644...
output:
208755389215975 125497785366837 162446748431411 63166834945113 33018804920229 89343160639243 36805816758195 40790494641758 13928126471189 267168502433672 191989403472418 276350936750564 11189666657474 133862444125402 92684260245650 179275392898572 46159208957881 232612971657325 184946588056252 11022...
result:
wrong output format Extra information in the output file
Subtask #5:
score: 0
Skipped
Dependency #4:
0%
Subtask #6:
score: 0
Skipped
Dependency #1:
0%
Subtask #7:
score: 0
Skipped
Dependency #1:
0%