oj.uz

답안 #555075

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
555075 2022-04-30T06:12:06 Z kshitij_sodani Fish 2 (JOI22_fish2) C++14
31 / 100
 1798 ms 191656 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){
				fin[zz]=1;

				zz++;
				/*if(n<=500 and qq<=500){
					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++;
			}*/
		/*	if(n<=500 and qq<=500){
					cout<<su<<endl;
				}*/
			//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=(j.a.b-j.a.a+1)-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;
}

Compilation message

fish2.cpp: In function 'int main()':
fish2.cpp:237:8: warning: unused variable 'su' [-Wunused-variable]
  237 |    llo su=0;
      |        ^~

Subtask #1
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 32 ms 49620 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 33 ms 49636 KB Output is correct
2 Correct 755 ms 171540 KB Output is correct
3 Correct 765 ms 179348 KB Output is correct
4 Correct 753 ms 171676 KB Output is correct
5 Correct 576 ms 179252 KB Output is correct
6 Correct 282 ms 112212 KB Output is correct
7 Correct 769 ms 177064 KB Output is correct
8 Correct 285 ms 112336 KB Output is correct
9 Correct 743 ms 173292 KB Output is correct
10 Correct 565 ms 177668 KB Output is correct
11 Correct 597 ms 185920 KB Output is correct
12 Correct 670 ms 159956 KB Output is correct
13 Correct 723 ms 169708 KB Output is correct
14 Correct 432 ms 142540 KB Output is correct
15 Correct 427 ms 142436 KB Output is correct

Subtask #3
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 32 ms 49620 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 33 ms 49636 KB Output is correct
2 Correct 755 ms 171540 KB Output is correct
3 Correct 765 ms 179348 KB Output is correct
4 Correct 753 ms 171676 KB Output is correct
5 Correct 576 ms 179252 KB Output is correct
6 Correct 282 ms 112212 KB Output is correct
7 Correct 769 ms 177064 KB Output is correct
8 Correct 285 ms 112336 KB Output is correct
9 Correct 743 ms 173292 KB Output is correct
10 Correct 565 ms 177668 KB Output is correct
11 Correct 597 ms 185920 KB Output is correct
12 Correct 670 ms 159956 KB Output is correct
13 Correct 723 ms 169708 KB Output is correct
14 Correct 432 ms 142540 KB Output is correct
15 Correct 427 ms 142436 KB Output is correct
16 Correct 39 ms 49660 KB Output is correct
17 Correct 1700 ms 184920 KB Output is correct
18 Correct 1687 ms 179840 KB Output is correct
19 Correct 1663 ms 184868 KB Output is correct
20 Correct 1721 ms 185304 KB Output is correct
21 Correct 1798 ms 185408 KB Output is correct
22 Correct 1750 ms 179884 KB Output is correct
23 Correct 1716 ms 184980 KB Output is correct
24 Correct 1761 ms 185472 KB Output is correct
25 Correct 1715 ms 185436 KB Output is correct
26 Correct 1790 ms 185512 KB Output is correct
27 Correct 1110 ms 118008 KB Output is correct
28 Correct 1219 ms 117836 KB Output is correct
29 Correct 1076 ms 118036 KB Output is correct
30 Correct 1574 ms 165448 KB Output is correct
31 Correct 1638 ms 181484 KB Output is correct
32 Correct 1623 ms 191656 KB Output is correct
33 Correct 1726 ms 183312 KB Output is correct
34 Correct 1678 ms 191200 KB Output is correct
35 Correct 1733 ms 191032 KB Output is correct
36 Correct 1574 ms 185908 KB Output is correct
37 Correct 1696 ms 178036 KB Output is correct
38 Correct 1477 ms 159092 KB Output is correct
39 Correct 1258 ms 148196 KB Output is correct
40 Correct 1377 ms 148608 KB Output is correct

Subtask #5
0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 33 ms 49636 KB Output is correct
2 Correct 755 ms 171540 KB Output is correct
3 Correct 765 ms 179348 KB Output is correct
4 Correct 753 ms 171676 KB Output is correct
5 Correct 576 ms 179252 KB Output is correct
6 Correct 282 ms 112212 KB Output is correct
7 Correct 769 ms 177064 KB Output is correct
8 Correct 285 ms 112336 KB Output is correct
9 Correct 743 ms 173292 KB Output is correct
10 Correct 565 ms 177668 KB Output is correct
11 Correct 597 ms 185920 KB Output is correct
12 Correct 670 ms 159956 KB Output is correct
13 Correct 723 ms 169708 KB Output is correct
14 Correct 432 ms 142540 KB Output is correct
15 Correct 427 ms 142436 KB Output is correct
16 Incorrect 39 ms 49620 KB Output isn't correct
17 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 32 ms 49620 KB Output isn't correct
2 Halted 0 ms 0 KB -