oj.uz

Submission #319283

# Submission time Handle Problem Language Result Execution time Memory
319283 2020-11-04T15:39:41 Z kshitij_sodani Money (IZhO17_money) C++14
45 / 100
 1500 ms 144492 KB 
#pragma GCC optimize("Ofast,unroll-loops")
#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(pp[i].a!=-1){
				if(cc[0].a>pp[i].b){
					int ind=0;
					for(int j=19;j>=0;j--){
						if(ind+(1<<j)<cc.size()){
							if(cc[ind+(1<<j)].a>pp[i].b){
								ind+=(1<<j);
							}
						}
					}
					tt.pb({{i,cc[ind].b-1},cur});
 
				}
			}
		}
	/*	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){
				if(j!=re[pp[i].a]){
					while(true){
						continue;
					}
				}
				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;
}

Compilation message

money.cpp: In function 'int main()':
money.cpp:112:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  112 |       if(ind+(1<<j)<cc.size()){
      |          ~~~~~~~~~~^~~~~~~~~~

Subtask #1
9.0 / 9.0

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

Subtask #2
16.0 / 16.0

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

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 23788 KB Output is correct
2 Correct 17 ms 23788 KB Output is correct
3 Correct 17 ms 23788 KB Output is correct
4 Correct 17 ms 23788 KB Output is correct
5 Correct 17 ms 23788 KB Output is correct
6 Correct 17 ms 23788 KB Output is correct
7 Correct 17 ms 23788 KB Output is correct
8 Correct 17 ms 23788 KB Output is correct
9 Correct 17 ms 23788 KB Output is correct
10 Correct 17 ms 23788 KB Output is correct
11 Correct 17 ms 23788 KB Output is correct
12 Correct 17 ms 23788 KB Output is correct
13 Correct 17 ms 23788 KB Output is correct
14 Correct 17 ms 23788 KB Output is correct
15 Correct 17 ms 23788 KB Output is correct
16 Correct 17 ms 23788 KB Output is correct
17 Correct 17 ms 23788 KB Output is correct
18 Correct 18 ms 23788 KB Output is correct
19 Correct 17 ms 23788 KB Output is correct
20 Correct 17 ms 23788 KB Output is correct
21 Correct 17 ms 23788 KB Output is correct
22 Correct 17 ms 23788 KB Output is correct
23 Correct 18 ms 23788 KB Output is correct
24 Correct 17 ms 23788 KB Output is correct
25 Correct 17 ms 23788 KB Output is correct
26 Correct 17 ms 23788 KB Output is correct
27 Correct 17 ms 23916 KB Output is correct
28 Correct 17 ms 23788 KB Output is correct
29 Correct 17 ms 23916 KB Output is correct
30 Correct 17 ms 23916 KB Output is correct
31 Correct 17 ms 23968 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 23788 KB Output is correct
36 Correct 17 ms 23916 KB Output is correct
37 Correct 17 ms 23916 KB Output is correct
38 Correct 18 ms 23916 KB Output is correct

Subtask #4
0 / 55.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 23788 KB Output is correct
2 Correct 17 ms 23788 KB Output is correct
3 Correct 17 ms 23788 KB Output is correct
4 Correct 17 ms 23788 KB Output is correct
5 Correct 17 ms 23788 KB Output is correct
6 Correct 17 ms 23788 KB Output is correct
7 Correct 17 ms 23788 KB Output is correct
8 Correct 17 ms 23788 KB Output is correct
9 Correct 17 ms 23788 KB Output is correct
10 Correct 17 ms 23788 KB Output is correct
11 Correct 17 ms 23788 KB Output is correct
12 Correct 17 ms 23788 KB Output is correct
13 Correct 17 ms 23788 KB Output is correct
14 Correct 17 ms 23788 KB Output is correct
15 Correct 17 ms 23788 KB Output is correct
16 Correct 17 ms 23788 KB Output is correct
17 Correct 17 ms 23788 KB Output is correct
18 Correct 18 ms 23788 KB Output is correct
19 Correct 17 ms 23788 KB Output is correct
20 Correct 17 ms 23788 KB Output is correct
21 Correct 17 ms 23788 KB Output is correct
22 Correct 17 ms 23788 KB Output is correct
23 Correct 18 ms 23788 KB Output is correct
24 Correct 17 ms 23788 KB Output is correct
25 Correct 17 ms 23788 KB Output is correct
26 Correct 17 ms 23788 KB Output is correct
27 Correct 17 ms 23916 KB Output is correct
28 Correct 17 ms 23788 KB Output is correct
29 Correct 17 ms 23916 KB Output is correct
30 Correct 17 ms 23916 KB Output is correct
31 Correct 17 ms 23968 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 23788 KB Output is correct
36 Correct 17 ms 23916 KB Output is correct
37 Correct 17 ms 23916 KB Output is correct
38 Correct 18 ms 23916 KB Output is correct
39 Correct 145 ms 53656 KB Output is correct
40 Correct 262 ms 77216 KB Output is correct
41 Correct 119 ms 46828 KB Output is correct
42 Correct 125 ms 47416 KB Output is correct
43 Correct 95 ms 40508 KB Output is correct
44 Correct 308 ms 89984 KB Output is correct
45 Correct 290 ms 87660 KB Output is correct
46 Correct 316 ms 90012 KB Output is correct
47 Correct 191 ms 61136 KB Output is correct
48 Correct 243 ms 77676 KB Output is correct
49 Correct 857 ms 110744 KB Output is correct
50 Correct 786 ms 107684 KB Output is correct
51 Correct 821 ms 112032 KB Output is correct
52 Correct 796 ms 107544 KB Output is correct
53 Correct 799 ms 109596 KB Output is correct
54 Correct 801 ms 107596 KB Output is correct
55 Execution timed out 1505 ms 144492 KB Time limit exceeded
56 Halted 0 ms 0 KB -