oj.uz

Submission #226898

# Submission time Handle Problem Language Result Execution time Memory
226898 2020-04-25T16:46:18 Z errorgorn Fire (JOI20_ho_t5) C++14
1 / 100
 1000 ms 136988 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/rope>
using namespace std;
using namespace __gnu_pbds;
using namespace __gnu_cxx;
#define ll long long
#define ii pair<ll,ll>
#define iii pair<ll,ii>
#define fi first
#define se second
#define endl '\n'
#define debug(x) cout << #x << " is " << x << endl;

#define rep(x,start,end) for(auto x=(start)-((start)>(end));x!=(end)-((start)>(end));((start)<(end)?x++:x--))
#define all(x) (x).begin(),(x).end()
#define sz(x) (int)(x).size()

ll MAX(ll a){return a;}
ll MIN(ll a){return a;}
template<typename... Args>
ll MAX(ll a,Args... args){return max(a,MAX(args...));}
template<typename... Args>
ll MIN(ll a,Args... args){return min(a,MIN(args...));}

#define indexed_set tree<ll,null_type,less<ll>,rb_tree_tag,tree_order_statistics_node_update>

struct node{
	int s,e,m;
	ll val=0,lazy=0;
	node *l=nullptr,*r=nullptr;
	node(int _s,int _e){
		s=_s,e=_e,m=s+e>>1;
		
		if (s!=e){
			l=new node(s,m);
			r=new node(m+1,e);
		}
	}
	
	ll propo(){
		if (lazy){
			val+=lazy*(e-s+1);
			if (s!=e) l->lazy+=lazy,r->lazy+=lazy;
			lazy=0;
		}
		
		return val;
	}
	
	void update(int i,int j,ll k){
		if (s==i && e==j) lazy+=k;
		else{
			if (j<=m) l->update(i,j,k);
			else if (m<i) r->update(i,j,k);
			else l->update(i,m,k),r->update(m+1,j,k);
			
			val=l->propo()+r->propo();
		}
	}
	
	ll query(int i,int j){
		propo();
	
		if (s==i && e==j) return val;
		else if (j<=m) return l->query(i,j);
		else if (m<i) return r->query(i,j);
		else return l->query(i,m)+r->query(m+1,j);
	}
}*rect=new node(-200005,200005),*diag=new node(-200005,200005);

struct upd{
	int row;
	int s,e;
	ll val;
	
	upd(int a,int b,int c,ll d){
		row=a,s=b,e=c,val=d;
	}
};

struct Q{
	int a,b,c;
	int index;
	
	Q(int _a,int _b,int _c,int _index){
		a=_a,b=_b,c=_c,index=_index;
	}
};

int n,q;
int arr[200005];
int l[200005];
int r[200005];

vector<int> stk;

vector<upd> ru;
vector<upd> du;

vector<Q> queries;

ll ans[200005];

void tri(int i,int j,ll val){
	//cout<<i<<" "<<j<<" "<<val<<endl;
	if (j<i) return; //stupid shit

	
	diag->update(i,200005,val);
	rect->update(j+1,200005,-val);
	
	du.push_back(upd(j-i,i,200005,val));
	ru.push_back(upd(j-i,j+1,200005,-val));
}

int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	
	cin>>n>>q;
	rep(x,1,n+1) cin>>arr[x];
	
	rep(x,1,n+1){
		while (!stk.empty() && arr[stk.back()]<arr[x]){
			r[stk.back()]=x-1;
			stk.pop_back();
		}
		
		stk.push_back(x);
	}
	while (!stk.empty()){
		r[stk.back()]=n;
		stk.pop_back();
	}
	
	rep(x,n+1,1){
		while (!stk.empty() && arr[stk.back()]<=arr[x]){
			l[stk.back()]=x+1;
			stk.pop_back();
		}
		
		stk.push_back(x);
	}
	while (!stk.empty()){
		l[stk.back()]=-200005; //yea
		stk.pop_back();
	}
	
	rep(x,1,n+1){
		tri(l[x],x-1,-arr[x]);
		tri(x+1,r[x],-arr[x]);
		tri(l[x],r[x],arr[x]);
	}
	
	int a,b,c;
	rep(x,0,q){
		cin>>a>>b>>c;
		
		queries.push_back(Q(a,b,c,x));
	}
	
	sort(all(queries),[](Q &i,Q &j){
		return i.a<j.a;
	});
	
	sort(all(du),[](upd &i,upd &j){
		return i.row>j.row;
	});
	
	sort(all(ru),[](upd &i,upd &j){
		return i.row>j.row;
	});
	
	for (auto &it:queries){
		while (!du.empty() && du.back().row<it.a){
			diag->update(du.back().s,du.back().e,-du.back().val);
			du.pop_back();
		}
		
		while (!ru.empty() && ru.back().row<it.a){
			rect->update(ru.back().s,ru.back().e,-ru.back().val);
			ru.pop_back();
		}
		
		ans[it.index]=rect->query(it.b,it.c)+diag->query(it.b-it.a,it.c-it.a);
	}
	
	rep(x,0,q) cout<<ans[x]<<endl;
}

Compilation message

ho_t5.cpp: In constructor 'node::node(int, int)':
ho_t5.cpp:34:16: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   s=_s,e=_e,m=s+e>>1;
               ~^~

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 81 ms 100600 KB Output is correct
2 Correct 87 ms 100604 KB Output is correct
3 Correct 77 ms 100600 KB Output is correct
4 Correct 87 ms 100600 KB Output is correct
5 Correct 85 ms 100604 KB Output is correct
6 Correct 78 ms 100600 KB Output is correct
7 Correct 88 ms 100600 KB Output is correct
8 Correct 77 ms 100600 KB Output is correct
9 Correct 79 ms 100600 KB Output is correct
10 Correct 78 ms 100600 KB Output is correct
11 Correct 83 ms 100600 KB Output is correct
12 Correct 82 ms 100600 KB Output is correct
13 Correct 76 ms 100600 KB Output is correct
14 Correct 78 ms 100600 KB Output is correct
15 Correct 82 ms 100600 KB Output is correct
16 Correct 83 ms 100600 KB Output is correct
17 Correct 81 ms 100600 KB Output is correct
18 Correct 79 ms 100600 KB Output is correct
19 Correct 80 ms 100600 KB Output is correct
20 Correct 85 ms 100728 KB Output is correct
21 Correct 78 ms 100600 KB Output is correct
22 Correct 79 ms 100600 KB Output is correct
23 Correct 79 ms 100600 KB Output is correct
24 Correct 79 ms 100600 KB Output is correct
25 Correct 84 ms 100600 KB Output is correct
26 Correct 77 ms 100600 KB Output is correct
27 Correct 78 ms 100600 KB Output is correct
28 Correct 76 ms 100604 KB Output is correct
29 Correct 77 ms 100600 KB Output is correct
30 Correct 91 ms 100604 KB Output is correct
31 Correct 78 ms 100600 KB Output is correct
32 Correct 81 ms 100600 KB Output is correct

Subtask #2
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 81 ms 100600 KB Output is correct
2 Execution timed out 1102 ms 129632 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #3
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 81 ms 100600 KB Output is correct
2 Correct 993 ms 132056 KB Output is correct
3 Execution timed out 1030 ms 136988 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #4
0 / 6.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1092 ms 129972 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 81 ms 100600 KB Output is correct
2 Correct 87 ms 100604 KB Output is correct
3 Correct 77 ms 100600 KB Output is correct
4 Correct 87 ms 100600 KB Output is correct
5 Correct 85 ms 100604 KB Output is correct
6 Correct 78 ms 100600 KB Output is correct
7 Correct 88 ms 100600 KB Output is correct
8 Correct 77 ms 100600 KB Output is correct
9 Correct 79 ms 100600 KB Output is correct
10 Correct 78 ms 100600 KB Output is correct
11 Correct 83 ms 100600 KB Output is correct
12 Correct 82 ms 100600 KB Output is correct
13 Correct 76 ms 100600 KB Output is correct
14 Correct 78 ms 100600 KB Output is correct
15 Correct 82 ms 100600 KB Output is correct
16 Correct 83 ms 100600 KB Output is correct
17 Correct 81 ms 100600 KB Output is correct
18 Correct 79 ms 100600 KB Output is correct
19 Correct 80 ms 100600 KB Output is correct
20 Correct 85 ms 100728 KB Output is correct
21 Correct 78 ms 100600 KB Output is correct
22 Correct 79 ms 100600 KB Output is correct
23 Correct 79 ms 100600 KB Output is correct
24 Correct 79 ms 100600 KB Output is correct
25 Correct 84 ms 100600 KB Output is correct
26 Correct 77 ms 100600 KB Output is correct
27 Correct 78 ms 100600 KB Output is correct
28 Correct 76 ms 100604 KB Output is correct
29 Correct 77 ms 100600 KB Output is correct
30 Correct 91 ms 100604 KB Output is correct
31 Correct 78 ms 100600 KB Output is correct
32 Correct 81 ms 100600 KB Output is correct
33 Execution timed out 1099 ms 129760 KB Time limit exceeded
34 Halted 0 ms 0 KB -