#include<bits/stdc++.h>
#define pb push_back
#define fi first
#define se second
#define mp make_pair
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef long double ld;
template <typename T> bool chkmin(T &x,T y){return x>y?x=y,1:0;}
template <typename T> bool chkmax(T &x,T y){return x<y?x=y,1:0;}
ll readint(){
ll 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*10+ch-'0';ch=getchar();}
return x*f;
}
int n,m,q;
int v[1500005][2],fa[1500005],ch[1500005][2],tag[1500005][2],prior[1500005];
mt19937 rng(time(0));
void make(int id){ tag[id][0]=tag[id][1]=-1; prior[id]=rng(); fa[id]=ch[id][0]=ch[id][1]=0; }
void pushdown(int id){
if(!id) return;
for(int i=0;i<2;i++){
if(tag[id][i]==-1) continue;
for(int j=0;j<2;j++){
if(ch[id][j]==0) continue;
v[ch[id][j]][i]=tag[id][i];
tag[ch[id][j]][i]=tag[id][i];
}
tag[id][i]=-1;
}
}
void split(int id,int&l,int&r,int a,int b,int idx){
if(!id) return (void)(l=r=0);
pushdown(id);
if(v[id][0]<=a&&v[id][1]<=b&&(mp(v[id][0],v[id][1])!=mp(a,b)||id<idx)){
fa[ch[id][1]]=0;
split(ch[id][1],ch[id][1],r,a,b,idx);
l=id;
fa[ch[id][1]]=id;
}else{
fa[ch[id][0]]=0;
split(ch[id][0],l,ch[id][0],a,b,idx);
r=id;
fa[ch[id][0]]=id;
}
}
void merge(int&id,int l,int r){
if(!l) return (void)(id=r);
if(!r) return (void)(id=l);
pushdown(l);
pushdown(r);
if(prior[l]>prior[r]) swap(l,r);
int L=0,R=0;
split(l,L,R,v[r][0],v[r][1],r);
fa[ch[r][0]]=0;
fa[ch[r][1]]=0;
merge(ch[r][0],ch[r][0],L);
merge(ch[r][1],ch[r][1],R);
fa[ch[r][0]]=r;
fa[ch[r][1]]=r;
id=r;
pushdown(id);
}
namespace segtree{
int root,tsz,ls[4000005],rs[4000005];
multiset<pii> ids[4000005];
pii mini[4000005];
void modify(int&id,int l,int r,int i,pii v){
if(!id) id=++tsz,mini[id]=mp(n+1,0);
if(l==r) return (void)(mini[id]=v);
int mid=(l+r)/2;
if(i<=mid) modify(ls[id],l,mid,i,v);
else modify(rs[id],mid+1,r,i,v);
mini[id]=mp(n+1,0);
if(ls[id]) mini[id]=min(mini[id],mini[ls[id]]);
if(rs[id]) mini[id]=min(mini[id],mini[rs[id]]);
}
pii query(int id,int l,int r,int ql,int qr){
if(!id||l>r||l>qr||r<ql) return mp(n+1,0);
if(ql<=l&&r<=qr) return mini[id];
int mid=(l+r)/2;
return min(query(ls[id],l,mid,ql,qr),query(rs[id],mid+1,r,ql,qr));
}
void add(int x,int y,int i){
ids[x].emplace(y,i);
modify(root,0,n,x,*ids[x].begin());
}
void rem(int x,int y,int i){
assert(ids[x].find(mp(y,i))!=ids[x].end());
ids[x].erase(ids[x].find(mp(y,i)));
modify(root,0,n,x,(ids[x].empty()?mp(n+1,0):*ids[x].begin()));
}
pii get(int l,int r){ return query(root,0,n,l,r); }
};
vector<int> find(int l){
vector<int> ret;
while(true){
pii mn=segtree::get(0,l);
if(mn.fi>n-l) break;
int i=mn.se;
segtree::rem(v[i][0],v[i][1],i);
while(fa[i]) i=fa[i];
ret.pb(i);
}
return ret;
}
int godown(int id){
if(!ch[id][0]) return id;
else return godown(ch[id][0]);
}
int main(){
n=readint();
m=readint();
q=readint();
for(int i=1;i<=m;i++) for(int j=0;j<2;j++) v[i][j]=readint();
for(int i=1;i<=m;i++) make(i),segtree::add(v[i][0],v[i][1],i);
while(q--){
int t=readint();
if(t==1){
int i=readint();
vector<int> anc;
for(int v=i;v;v=fa[v]) anc.pb(v);
reverse(anc.begin(),anc.end());
for(int v:anc) pushdown(v);
printf("%d %d\n",v[i][0],v[i][1]);
}
if(t==2){
int l=readint();
int root=0;
vector<int> ids=find(n-l);
for(int i:ids){
int L=0,R=0;
split(i,L,R,n-l,l,1e9);
if(R!=0){
int x=godown(R);
vector<int> anc;
for(int v=x;v;v=fa[v]) anc.pb(v);
reverse(anc.begin(),anc.end());
for(int v:anc) pushdown(v);
segtree::add(v[x][0],v[x][1],x);
}
v[L][0]=n-l;
tag[L][0]=n-l;
pushdown(L);
merge(root,root,L);
pushdown(root);
}
if(root!=0){
int x=godown(root);
vector<int> anc;
for(int v=x;v;v=fa[v]) anc.pb(v);
reverse(anc.begin(),anc.end());
for(int v:anc) pushdown(v);
segtree::add(v[x][0],v[x][1],x);
}
}
if(t==3){
int l=readint();
int root=0;
vector<int> ids=find(l);
for(int i:ids){
int L=0,R=0;
split(i,L,R,l,n-l,1e9);
if(R!=0){
int x=godown(R);
vector<int> anc;
for(int v=x;v;v=fa[v]) anc.pb(v);
reverse(anc.begin(),anc.end());
for(int v:anc) pushdown(v);
segtree::add(v[x][0],v[x][1],x);
}
v[L][1]=n-l;
tag[L][1]=n-l;
pushdown(L);
pushdown(R);
merge(root,root,L);
pushdown(root);
}
if(root!=0){
int x=godown(root);
vector<int> anc;
for(int v=x;v;v=fa[v]) anc.pb(v);
reverse(anc.begin(),anc.end());
for(int v:anc) pushdown(v);
segtree::add(v[x][0],v[x][1],x);
}
}
if(t==4){
make(++m);
for(int j=0;j<2;j++) v[m][j]=readint();
segtree::add(v[m][0],v[m][1],m);
}
}
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
226 ms |
404008 KB |
Execution killed with signal 11 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
255 ms |
418124 KB |
Execution killed with signal 11 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
248 ms |
423124 KB |
Execution killed with signal 11 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
248 ms |
423124 KB |
Execution killed with signal 11 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
226 ms |
404008 KB |
Execution killed with signal 11 |
| 2 |
Halted |
0 ms |
0 KB |
- |
