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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#474031 | #6427. Just Another Game of Stones | Linx | WA | 82ms | 83388kb | C++23 | 2.7kb | 2024-07-12 15:38:59 | 2024-07-12 15:38:59 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
const int maxn=2e5+5;
const int Inf=0x3f3f3f3f;
inline int read() {
int x=0,f=1;
char ch=getchar();
while(ch<'0'||ch>'9') {if(ch=='-') f=-1;ch=getchar();}
while(ch>='0'&&ch<='9') {x=(x<<1)+(x<<3)+(ch^48);ch=getchar();}
return x*f;
}
int n,q,a[maxn],op,l,r,x;
struct Node{
int l,r,sum,Min,se,cnt;
int lazy;
int js[30];
}tree[maxn<<2];
void pushup(int rt) {
tree[rt].Min=min(tree[rt<<1].Min,tree[rt<<1|1].Min);
if(tree[rt<<1].Min==tree[rt<<1|1].Min) {
tree[rt].se=min(tree[rt<<1].se,tree[rt<<1|1].se);
tree[rt].cnt=tree[rt<<1].cnt+tree[rt<<1|1].cnt;
}
else if(tree[rt<<1].Min<tree[rt<<1|1].Min) {
tree[rt].se=min(tree[rt<<1].se,tree[rt<<1|1].Min);
tree[rt].cnt=tree[rt<<1].cnt;
}
else {
tree[rt].se=min(tree[rt<<1].Min,tree[rt<<1|1].se);
tree[rt].cnt=tree[rt<<1|1].cnt;
}
tree[rt].sum=(tree[rt<<1].sum^tree[rt<<1|1].sum);
for(int k=0;k<=29;++k) tree[rt].js[k]=tree[rt<<1].js[k]+tree[rt<<1|1].js[k];
}
void build(int rt,int l,int r) {
tree[rt].l=l,tree[rt].r=r;
if(l==r) {
tree[rt].sum=a[l];
tree[rt].Min=a[l];
tree[rt].cnt=1;
tree[rt].se=Inf;
for(int k=0;k<=29;++k) tree[rt].js[k]=((a[l]>>k)&1);
return;
}
int mid=l+r>>1;
build(rt<<1,l,mid);
build(rt<<1|1,mid+1,r);
pushup(rt);
}
void update(int rt,int x) {
if(tree[rt].cnt&1) tree[rt].sum^=(tree[rt].Min^x);
for(int k=0;k<=29;++k) {
if((tree[rt].Min>>k)&1) tree[rt].js[k]-=tree[rt].cnt;
if((x>>k)&1) tree[rt].js[k]+=tree[rt].cnt;
}
tree[rt].Min=x;
tree[rt].lazy=max(tree[rt].lazy,x);
}
void pushdown(int rt) {
if(tree[rt].lazy) {
update(rt<<1,tree[rt].lazy);
update(rt<<1|1,tree[rt].lazy);
tree[rt].lazy=0;
}
}
void update_max(int rt,int l,int r,int L,int R,int x) {
if(L>r||R<l||x<=tree[rt].Min) return;
if(L<=l&&R>=r&&x<tree[rt].se) {
update(rt,x);
return;
}
if(l==r)exit(0);
pushdown(rt);
int mid=l+r>>1;
update_max(rt<<1,l,mid,L,R,x);
update_max(rt<<1|1,mid+1,r,L,R,x);
pushup(rt);
}
int Xor,sum[30];
void query(int rt,int l,int r,int L,int R) {
if(R<l||L>r) return;
if(L<=l&&R>=r) {
for(int k=0;k<=29;++k) sum[k]+=tree[rt].js[k];
Xor^=tree[rt].sum;
return;
}
pushdown(rt);
int mid=l+r>>1;
query(rt<<1,l,mid,L,R);
query(rt<<1|1,mid+1,r,L,R);
return;
}
int main() {
n=read(),q=read();
for(int i=1;i<=n;++i) a[i]=read();
build(1,1,n);
while(q--) {
op=read(),l=read(),r=read(),x=read();
if(op==1) update_max(1,1,n,l,r,x);
else {
Xor=0;
for(int k=0;k<=29;++k) sum[k]=0;
query(1,1,n,l,r);
Xor^=x;
int ans=0;
if((Xor^x)<x) ans++;
int p=-1;
while(Xor) p++,Xor>>=1;
printf("%d\n",ans+sum[p]);
}
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 5864kb
input:
5 4 1 2 1 4 1 2 1 3 1 1 2 4 3 2 2 4 4 2 1 4 4
output:
1 0 3
result:
ok 3 number(s): "1 0 3"
Test #2:
score: -100
Wrong Answer
time: 82ms
memory: 83388kb
input:
200000 200000 962352030 173642520 1008864183 74920228 684681800 500911321 1001441054 257633652 185843534 59168654 317689197 731348417 123888883 708119712 340055368 876566011 980078202 969174443 814012870 715639041 596932238 173757742 314504576 1045746913 740811577 570187156 999816627 12441059 122507...
output:
38889 57353 46659 19851 34617 128539 1097 621 16087 24597 14051 12263 33399 14363 41869 21117 97277 16733 64611 737 32715 25031 148859 17395 76263 56261 19825 93349 48529 22291 31645 9833 35133 95623 184311 39321 2619 6067 12315 25369 9041 35785 39783 111237 151543 54289 121169 165785 101803 172387 ...
result:
wrong answer 4th numbers differ - expected: '19709', found: '19851'