oj.uz

Submission #555070

# Submission time Handle Problem Language Result Execution time Memory
555070 2022-04-30T06:05:16 Z kshitij_sodani Fish 2 (JOI22_fish2) C++14
8 / 100
 4000 ms 185976 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long llo;
#define a first
#define b second
#define pb push_back
#define endl '\n'

llo it[100001];
vector<llo> aa[100001];
llo pre[100001];
vector<pair<llo,llo>> bb[100001];
vector<pair<llo,llo>> cc[100001];
pair<llo,llo> ne[100001];
llo fin[100001];
llo tree2[4*100001][2];
vector<pair<pair<llo,llo>,pair<llo,llo>>> ee[100001];
vector<pair<llo,llo>> ff[100001];
void build(llo no,llo l,llo r){
	if(l==r){
		tree2[no][0]=it[l]-pre[l];
		tree2[no][1]=it[l]+pre[l+1];
	}
	else{
		llo mid=(l+r)/2;
		build(no*2+1,l,mid);
		build(no*2+2,mid+1,r);
		tree2[no][0]=max(tree2[no*2+1][0],tree2[no*2+2][0]);
		tree2[no][1]=max(tree2[no*2+1][1],tree2[no*2+2][1]);
	}
}
llo query(llo no,llo l,llo r,llo aa,llo bb,llo ind){
	if(r<aa or l>bb or aa>bb){
		return -(llo)1e18;
	}
	if(aa<=l and r<=bb){
		return tree2[no][ind];
	}
	llo mid=(l+r)/2;
	return max(query(no*2+1,l,mid,aa,bb,ind),query(no*2+2,mid+1,r,aa,bb,ind));
}

#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
#define ord tree<pair<llo,llo>,null_type,less<pair<llo,llo>>,rb_tree_tag,tree_order_statistics_node_update>
ord tree3[4*100001];
void update2(llo no,llo l,llo r,llo i,llo j){
	tree3[no].insert({j,i});
	if(l<r){
		llo mid=(l+r)/2;
		if(i<=mid){
			update2(no*2+1,l,mid,i,j);
		}
		else{
			update2(no*2+2,mid+1,r,i,j);
		}
	}
}
llo query2(llo no,llo l,llo r,llo aa,llo bb,llo i){
	if(r<aa or l>bb or aa>bb){
		return 0;
	}
	if(aa<=l and r<=bb){
		if(tree3[no].size()==0){
			return 0;
		}

		//for(auto j:tree3[no]){
		//	cout<<j.a<<","<<j.b<<endl;
		//}
		return tree3[no].order_of_key({i,-1});
	}
	llo mid=(l+r)/2;
	return query2(no*2+1,l,mid,aa,bb,i)+query2(no*2+2,mid+1,r,aa,bb,i);
}
llo cot[100001];
int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	llo n,q;
	cin>>n;
	for(llo i=0;i<n;i++){
		cin>>it[i];
		pre[i+1]=pre[i]+it[i];
	}
	cin>>q;

	for(llo i=0;i<n;i++){
		ne[i]={-1,-1};
	}
	for(llo i=1;i<n;i++){
		if(it[i]<it[i-1]){
			aa[i].pb(i);
		}
		for(auto j:aa[i-1]){
			if(pre[i+1]-pre[j]<it[j-1]){
				aa[i].pb(j);
			}
		}

		if(i<n-1){
			for(auto j:aa[i]){
				if(pre[i+1]-pre[j]<it[i+1]){
					bb[j-1].pb({i,j});
					cc[i+1].pb({i,j});
					//cout<<i<<":"<<j<<endl;

				}
			}
		}
	}
	multiset<pair<llo,llo>> cur;
	llo ans=n;
	for(llo i=0;i<n;i++){
		for(auto j:cc[i]){
			auto jj=cur.find({j.a,-j.b});
			cur.erase(jj);
		}
		if(cur.size()){
			pair<llo,llo> no=*(cur.begin());
			no.b=-no.b;
			ans--;
			ne[i]={no.b,no.a};
		}
		else{
		}
		for(auto j:bb[i]){
			cur.insert({j.a,-j.b});
		}
	}		
	build(0,0,n-1);
	llo zz=0;
	while(q--){
		llo tt,l,r;
		cin>>tt>>l>>r;
		if(tt==1){
			l--;
			it[l]=r;

			for(llo i=0;i<n;i++){
				ne[i]={-1,-1};
				aa[i].clear();
				bb[i].clear();
				cc[i].clear();
			}
			for(int i=0;i<n;i++){
				pre[i+1]=pre[i]+it[i];
			}
			for(llo i=1;i<n;i++){
				if(it[i]<it[i-1]){
					aa[i].pb(i);
				}
				for(auto j:aa[i-1]){
					if(pre[i+1]-pre[j]<it[j-1]){
						aa[i].pb(j);
					}
				}

				if(i<n-1){
					for(auto j:aa[i]){
						if(pre[i+1]-pre[j]<it[i+1]){
							bb[j-1].pb({i,j});
							cc[i+1].pb({i,j});
							//cout<<i<<":"<<j<<endl;

						}
					}
				}
			}
			multiset<pair<llo,llo>> cur;
			llo ans=n;
			for(llo i=0;i<n;i++){
				for(auto j:cc[i]){
					auto jj=cur.find({j.a,-j.b});
					cur.erase(jj);
				}
				if(cur.size()){
					pair<llo,llo> no=*(cur.begin());
					no.b=-no.b;
					ans--;
					ne[i]={no.b,no.a};
				}
				else{
				}
				for(auto j:bb[i]){
					cur.insert({j.a,-j.b});
				}
			}		
			build(0,0,n-1);
		}
		else{
			l--;
			r--;
			if(l==r){
				cout<<1<<endl;
				continue;
			}
			llo ind=r+1;
			for(llo j=19;j>=0;j--){
				if(ind-(1<<j)>l){
					if(query(0,0,n-1,ind-(1<<j),r,0)+pre[l]<=0){
						//cout<<query(0,0,n-1,ind-(1<<j),r,0)+pre[l]<<","<<ind-(1<<j)<<","<<r<<endl;
						ind-=(1<<j);
					}
				}
			}
			ind--;
			//cout<<ind<<":"<<endl;
		/*	llo ind=low-1;
			for(llo i=l+1;i<=r;i++){
				if(it[i]-(pre[i]-pre[l])>0){
					ind=i;
				}
			}*/
			llo ind2=l-1;
			for(llo j=19;j>=0;j--){
				if(ind2+(1<<j)<r){
					if(query(0,0,n-1,l,ind2+(1<<j),1)-pre[r+1]<=0){
						ind2+=(1<<j);
					}
				}
			}
			ind2++;
			/*for(llo i=r-1;i>=l;i--){
				if(it[i]-(pre[r+1]-pre[i+1])>0){
					ind2=i;
				}
			}
			ind2++;*/

			llo su=0;
			if(ind>ind2){
				fin[zz]=0;
			}
			else{
				ee[l].pb({{ind,ind2},{r,zz}});
			}
			for(llo j=ind;j<=ind2;j++){
				if(ne[j].a>=0){
					if(ne[j].a>l and ne[j].b<r){
						continue;
					}
				}
				su++;
			}
			//cout<<su<<endl;
			zz++;
		}
	}

	for(llo i=0;i<n;i++){
		if(ne[i].a>=0){
			//cout<<i<<":"<<ne[i].a<<":"<<ne[i].b<<endl;
			ff[ne[i].a].pb({i,ne[i].b});
		}

	}
	for(int i=0;i<n;i++){
		cot[i]=n;
	}
	for(llo i=n-1;i>=0;i--){
		for(auto j:ee[i]){
			llo xx=0;//query2(0,0,n-1,j.a.a,j.a.b,j.b.a);
			for(int ii=j.a.a;ii<=j.a.b;ii++){
				if(cot[ii]<j.b.a){

				}
				else{
					xx++;
				}
			}
		//	cout<<i<<","<<j.a.a<<","<<j.a.b<<","<<j.b.a<<","<<j.b.b<<endl;
			//cout<<xx<<endl;
			//xx=(j.a.b-j.a.a+1)-xx;
			fin[j.b.b]=xx;
		}
		for(auto j:ff[i]){
			//cout<<j.a<<"::"<<j.b<<endl;
			cot[j.a]=j.b;
			update2(0,0,n-1,j.a,j.b);
		}
	}


	for(llo i=0;i<zz;i++){
		cout<<fin[i]<<endl;
	}








	return 0;
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 33 ms 49620 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 33 ms 49604 KB Output is correct
2 Correct 816 ms 171560 KB Output is correct
3 Correct 807 ms 179348 KB Output is correct
4 Correct 764 ms 171668 KB Output is correct
5 Correct 584 ms 179324 KB Output is correct
6 Correct 305 ms 112216 KB Output is correct
7 Correct 839 ms 177064 KB Output is correct
8 Correct 316 ms 112264 KB Output is correct
9 Correct 762 ms 173408 KB Output is correct
10 Correct 586 ms 177656 KB Output is correct
11 Correct 634 ms 185976 KB Output is correct
12 Correct 724 ms 159848 KB Output is correct
13 Correct 810 ms 169612 KB Output is correct
14 Correct 453 ms 142736 KB Output is correct
15 Correct 464 ms 142436 KB Output is correct

Subtask #3
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 33 ms 49620 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 33 ms 49604 KB Output is correct
2 Correct 816 ms 171560 KB Output is correct
3 Correct 807 ms 179348 KB Output is correct
4 Correct 764 ms 171668 KB Output is correct
5 Correct 584 ms 179324 KB Output is correct
6 Correct 305 ms 112216 KB Output is correct
7 Correct 839 ms 177064 KB Output is correct
8 Correct 316 ms 112264 KB Output is correct
9 Correct 762 ms 173408 KB Output is correct
10 Correct 586 ms 177656 KB Output is correct
11 Correct 634 ms 185976 KB Output is correct
12 Correct 724 ms 159848 KB Output is correct
13 Correct 810 ms 169612 KB Output is correct
14 Correct 453 ms 142736 KB Output is correct
15 Correct 464 ms 142436 KB Output is correct
16 Correct 33 ms 49612 KB Output is correct
17 Execution timed out 4006 ms 184896 KB Time limit exceeded
18 Halted 0 ms 0 KB -

Subtask #5
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 33 ms 49604 KB Output is correct
2 Correct 816 ms 171560 KB Output is correct
3 Correct 807 ms 179348 KB Output is correct
4 Correct 764 ms 171668 KB Output is correct
5 Correct 584 ms 179324 KB Output is correct
6 Correct 305 ms 112216 KB Output is correct
7 Correct 839 ms 177064 KB Output is correct
8 Correct 316 ms 112264 KB Output is correct
9 Correct 762 ms 173408 KB Output is correct
10 Correct 586 ms 177656 KB Output is correct
11 Correct 634 ms 185976 KB Output is correct
12 Correct 724 ms 159848 KB Output is correct
13 Correct 810 ms 169612 KB Output is correct
14 Correct 453 ms 142736 KB Output is correct
15 Correct 464 ms 142436 KB Output is correct
16 Incorrect 33 ms 49580 KB Output isn't correct
17 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Incorrect 33 ms 49620 KB Output isn't correct
2 Halted 0 ms 0 KB -