oj.uz

Submission #319256

# Submission time Handle Problem Language Result Execution time Memory
319256 2020-11-04T15:09:24 Z kshitij_sodani Money (IZhO17_money) C++14
45 / 100
 1500 ms 40560 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long llo;
#define mp make_pair
#define pb push_back
#define a first 
#define b second
//#define endl '\n'
int n;
int it[1000001];
int tree[1000001*4];
pair<int,int> pp[1000001];
int ans[1000001];
int re[1000001];
//int mi[1000001][20];
void build(int no,int l,int r){
	if(l==r){
		tree[no]=it[l];
	}
	else{
		int mid=(l+r)/2;
		build(no*2+1,l,mid);
		build(no*2+2,mid+1,r);
		tree[no]=max(tree[no*2+1],tree[no*2+2]);
	}
}
int query(int no,int l,int r,int aa,int bb){
	if(r<aa){
		return -1;
	}
	if(aa<=l){
		if(tree[no]<=bb){
			return -1;
		}
		if(l==r){
			return l;
		}
	}
	int mid=(l+r)/2;
	int x=query(no*2+1,l,mid,aa,bb);
	if(x==-1){
		return query(no*2+2,mid+1,r,aa,bb);
	}
	else{
		return x;
	}
}
vector<int> pre[1000001];
int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cin>>n;
	/*for(int i=0;i<n;i++){
		for(int j=0;j<20;j++){
			mi[i][j]=1;
		}
	}*/
	for(int i=0;i<n;i++){
		cin>>it[i];
	}
	vector<pair<int,int>> ss;
	vector<pair<pair<int,int>,int>> tt;
	set<int> kk;
	build(0,0,n-1);
	int cur=0;
	for(int i=0;i<n;i++){
		while(ss.size()){
			if(ss.back().a<=it[i]){
				ss.pop_back();
			}
			else{
				break;
			}
		}
		pp[i]={-1,-1};
		if(ss.size()){
			int ne=ss.back().b;

			tt.pb({{ne,i-1},cur});
			//cur++;
			int jj=*kk.upper_bound(it[i]);
			pp[i]={ss.back().b,jj};
			/*
			int low=query(0,0,n-1,i,jj);
			if(low!=-1){
				tt.pb({{i,low-1},cur});
				//cur++;
			}*/
		}
		kk.insert(it[i]);
		ss.pb({it[i],i});
	}
	vector<pair<int,int>> cc;
	for(int i=n-1;i>=0;i--){
		while(cc.size()){
			if(cc.back().a<=it[i]){
				cc.pop_back();
			}
			else{
				break;
			}
		}
		re[i]=-1;
		if(cc.size()){
			re[i]=cc.back().b;
		}
	/*	if(cc.size()){
			re[i]=cc.back().b;
			if(pp[i].a!=-1){
				int cur2=cc.back().b;
				while(cur2!=-1){
					if(it[cur2]>pp[i].b){
					//	cout<<i<<":"<<cur2<<endl;
						tt.pb({{i,cur2-1},cur});
						break;
					}
					cur2=re[cur2];
				}
			}*/
			/*if(pp[i].a!=-1){
				if(cc[0].a>pp[i].b){
					if(cc.back().a<=pp[i].b){
						ans[i]=ans[cc.back().b];
					}
					else{
						ans[i]=cc.back().b;
					}
					tt.pb({{i,ans[i]-1},cur});
				}
			}*/

		//}
		cc.pb({it[i],i});
	}
	for(int i=0;i<n;i++){
		if(pp[i].b==-1){
			continue;
		}
		for(int j=i+1;j<n;j++){
			if(it[j]>pp[i].b){
				tt.pb({{i,j-1},cur});
				break;
			}
		}
		/*if(pp[i].a!=-1){
			if(re[pp[i].a]!=-1){
				
				int cur2=re[pp[i].a];
				tt.pb({{i,cur2-1},cur});
			}
		}*/
	}

	for(auto j:tt){
		pre[j.a.b].pb(j.a.a);
	}

	int ans=1;
	
	int ma=-1;
	for(int i=0;i<n-1;i++){
		for(auto j:pre[i]){
			if(j<=ma){
				continue;
			}
			ans+=1;
			ma=i;
		}
	}
	cout<<ans<<endl;
 
	return 0;
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 23788 KB Output is correct
2 Correct 17 ms 23788 KB Output is correct
3 Correct 17 ms 23916 KB Output is correct
4 Correct 16 ms 23788 KB Output is correct
5 Correct 16 ms 23916 KB Output is correct
6 Correct 16 ms 23788 KB Output is correct
7 Correct 17 ms 23788 KB Output is correct
8 Correct 16 ms 23788 KB Output is correct
9 Correct 16 ms 23916 KB Output is correct
10 Correct 16 ms 23788 KB Output is correct
11 Correct 18 ms 23916 KB Output is correct
12 Correct 16 ms 23868 KB Output is correct
13 Correct 17 ms 23788 KB Output is correct
14 Correct 16 ms 23916 KB Output is correct
15 Correct 16 ms 23788 KB Output is correct
16 Correct 16 ms 23916 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 23788 KB Output is correct
2 Correct 17 ms 23788 KB Output is correct
3 Correct 17 ms 23916 KB Output is correct
4 Correct 16 ms 23788 KB Output is correct
5 Correct 16 ms 23916 KB Output is correct
6 Correct 16 ms 23788 KB Output is correct
7 Correct 17 ms 23788 KB Output is correct
8 Correct 16 ms 23788 KB Output is correct
9 Correct 16 ms 23916 KB Output is correct
10 Correct 16 ms 23788 KB Output is correct
11 Correct 18 ms 23916 KB Output is correct
12 Correct 16 ms 23868 KB Output is correct
13 Correct 17 ms 23788 KB Output is correct
14 Correct 16 ms 23916 KB Output is correct
15 Correct 16 ms 23788 KB Output is correct
16 Correct 16 ms 23916 KB Output is correct
17 Correct 16 ms 23916 KB Output is correct
18 Correct 17 ms 24044 KB Output is correct
19 Correct 16 ms 23916 KB Output is correct
20 Correct 16 ms 23916 KB Output is correct
21 Correct 16 ms 23916 KB Output is correct
22 Correct 16 ms 23788 KB Output is correct
23 Correct 17 ms 23788 KB Output is correct
24 Correct 17 ms 23788 KB Output is correct
25 Correct 16 ms 23916 KB Output is correct
26 Correct 16 ms 23788 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 23788 KB Output is correct
2 Correct 17 ms 23788 KB Output is correct
3 Correct 17 ms 23916 KB Output is correct
4 Correct 16 ms 23788 KB Output is correct
5 Correct 16 ms 23916 KB Output is correct
6 Correct 16 ms 23788 KB Output is correct
7 Correct 17 ms 23788 KB Output is correct
8 Correct 16 ms 23788 KB Output is correct
9 Correct 16 ms 23916 KB Output is correct
10 Correct 16 ms 23788 KB Output is correct
11 Correct 18 ms 23916 KB Output is correct
12 Correct 16 ms 23868 KB Output is correct
13 Correct 17 ms 23788 KB Output is correct
14 Correct 16 ms 23916 KB Output is correct
15 Correct 16 ms 23788 KB Output is correct
16 Correct 16 ms 23916 KB Output is correct
17 Correct 16 ms 23916 KB Output is correct
18 Correct 17 ms 24044 KB Output is correct
19 Correct 16 ms 23916 KB Output is correct
20 Correct 16 ms 23916 KB Output is correct
21 Correct 16 ms 23916 KB Output is correct
22 Correct 16 ms 23788 KB Output is correct
23 Correct 17 ms 23788 KB Output is correct
24 Correct 17 ms 23788 KB Output is correct
25 Correct 16 ms 23916 KB Output is correct
26 Correct 16 ms 23788 KB Output is correct
27 Correct 17 ms 23916 KB Output is correct
28 Correct 16 ms 23916 KB Output is correct
29 Correct 17 ms 23916 KB Output is correct
30 Correct 17 ms 23936 KB Output is correct
31 Correct 16 ms 23916 KB Output is correct
32 Correct 17 ms 23916 KB Output is correct
33 Correct 17 ms 23916 KB Output is correct
34 Correct 17 ms 23916 KB Output is correct
35 Correct 17 ms 23916 KB Output is correct
36 Correct 17 ms 23916 KB Output is correct
37 Correct 16 ms 23916 KB Output is correct
38 Correct 17 ms 23916 KB Output is correct

Subtask #4
0 / 55.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 23788 KB Output is correct
2 Correct 17 ms 23788 KB Output is correct
3 Correct 17 ms 23916 KB Output is correct
4 Correct 16 ms 23788 KB Output is correct
5 Correct 16 ms 23916 KB Output is correct
6 Correct 16 ms 23788 KB Output is correct
7 Correct 17 ms 23788 KB Output is correct
8 Correct 16 ms 23788 KB Output is correct
9 Correct 16 ms 23916 KB Output is correct
10 Correct 16 ms 23788 KB Output is correct
11 Correct 18 ms 23916 KB Output is correct
12 Correct 16 ms 23868 KB Output is correct
13 Correct 17 ms 23788 KB Output is correct
14 Correct 16 ms 23916 KB Output is correct
15 Correct 16 ms 23788 KB Output is correct
16 Correct 16 ms 23916 KB Output is correct
17 Correct 16 ms 23916 KB Output is correct
18 Correct 17 ms 24044 KB Output is correct
19 Correct 16 ms 23916 KB Output is correct
20 Correct 16 ms 23916 KB Output is correct
21 Correct 16 ms 23916 KB Output is correct
22 Correct 16 ms 23788 KB Output is correct
23 Correct 17 ms 23788 KB Output is correct
24 Correct 17 ms 23788 KB Output is correct
25 Correct 16 ms 23916 KB Output is correct
26 Correct 16 ms 23788 KB Output is correct
27 Correct 17 ms 23916 KB Output is correct
28 Correct 16 ms 23916 KB Output is correct
29 Correct 17 ms 23916 KB Output is correct
30 Correct 17 ms 23936 KB Output is correct
31 Correct 16 ms 23916 KB Output is correct
32 Correct 17 ms 23916 KB Output is correct
33 Correct 17 ms 23916 KB Output is correct
34 Correct 17 ms 23916 KB Output is correct
35 Correct 17 ms 23916 KB Output is correct
36 Correct 17 ms 23916 KB Output is correct
37 Correct 16 ms 23916 KB Output is correct
38 Correct 17 ms 23916 KB Output is correct
39 Execution timed out 1586 ms 40560 KB Time limit exceeded
40 Halted 0 ms 0 KB -