Submission #392260

#	Time	Username	Problem	Language	Result	Execution time	Memory
392260		keta_tsimakuridze	Trampoline (info1cup20_trampoline)	C++14	100 / 100	1097 ms	161540 KiB

trampoline

#include<bits/stdc++.h>
#define f first
#define int long long
#define s second
using namespace std;
const int N=4e5+5,mod=1e9+7,Inf=1e15;
int t,tree[25*N],le_[25*N],ri_[25*N],cur,root[N],n,R,C;
pair<int,int>p[N],a[N];
map<int,int> ind;
set<pair<int,int> > s[N];
void build(int u,int l,int r){
	tree[u]=Inf;
	if(l==r) {
		return;
	}
	cur++;
	le_[u] = cur;
	cur++;
	ri_[u] = cur;
	int mid=(l+r)/2;
	build(le_[u],l,mid);
	build(ri_[u],mid+1,r);
}
void update(int u,int ind,int l,int r,int val){
	if(l>ind || r<ind) return;
	if(l==r){
		tree[cur]=val;
		return;
	}
	int mid=(l+r)/2,x=cur;
	le_[x]=le_[u];
	ri_[x]=ri_[u];
	cur++;
	if(ind<=mid) {
		le_[x]=cur;
	}
	else ri_[x]=cur;
	update(le_[u],ind,l,mid,val);
	update(ri_[u],ind,mid+1,r,val);
	tree[x] = min(tree[le_[x]],tree[ri_[x]]);
}
int getans(int u,int ind,int l,int r){
	if(l>ind || r<ind) return Inf;
	if(l==r) {
		return tree[u];
	}
	int mid=(l+r)/2;
	return  min(getans(le_[u],ind,l,mid),getans(ri_[u],ind,mid+1,r));
}
 main(){
 	ios_base::sync_with_stdio(false),cin.tie(0),cout.tie(0);
	// t=1;
	cin>>R>>C>>n;

	swap(R,C);
	for(int i=1;i<=n;i++){
		cin>>p[i].f>>p[i].s;
	}
	sort(p+1,p+n+1);
	for(int i=1;i<=n;i++){
		a[i].f = p[i].f;
	}
	int idx = 0;
	sort(a+1,a+n+1);
	for(int i=1;i<=n;i++){
		if(a[i].f!=a[i-1].f) idx++;
		ind[a[i].f] = idx;
	}
	root[n+1]=1;
	cur=1;
	build(1,1,n);
	for(int i=n;i>=1;i--){int bef=1;
		if(s[ind[p[i].f+1]].upper_bound({p[i].s,0}) != s[ind[p[i].f+1]].end()) {
			 bef = root [(*s[ind[p[i].f+1]].upper_bound({p[i].s,0})).s ];
			
		
		}
		cur++;root[i] =cur;
		update(bef,ind[p[i].f],1,n,p[i].s);
		s[ind[p[i].f]].insert({p[i].s,i});
	}	
	cin>>t; 
	while(t--){
		int x,y,x2,y2;
		cin>>x>>y>>x2>>y2;
		swap(x,y);
		swap(x2,y2);
		if(y==y2 && x<=x2) cout<<"Yes"<<" ";
		else 
		if(s[ind[y]].upper_bound({x,0})==s[ind[y]].end()){
			cout<<"No"<<" ";
		}
		else {
			int aft =( *s[ind[y]].upper_bound({x,0})).s; 
			if(getans(root[aft],ind[y2-1],1,n) <= x2) cout<<"Yes"<< " ";
			else cout<<"No"<< " ";
		}
	}
}

Compilation message (stderr)

trampoline.cpp:50:7: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   50 |  main(){
      |       ^

• Subtask 1: 23 / 23
• Subtask 2: 20 / 20
• Subtask 3: 11 / 11
• Subtask 4: 19 / 19
• Subtask 5: 27 / 27