oj.uz

Submission #962230

# Submission time Handle Problem Language Result Execution time Memory
962230 2024-04-13T09:18:08 Z LCJLY Autobahn (COI21_autobahn) C++14
100 / 100
 322 ms 44688 KB 
#include <bits/stdc++.h>
using namespace std;	
 
#define int long long 
#define ld long double
#define show(x,y) cout << y << " " << #x << endl;
#define show2(x,y,i,j) cout << y << " " << #x << "  " << j << " " << #i << endl;
#define show3(x,y,i,j,p,q) cout << y << " " << #x << "  " << j << " " << #i << "  " << q << " " << #p << endl;
#define show4(x,y) for(auto it:y) cout << it << " "; cout << #x << endl;
typedef pair<long long,int>pii;
typedef pair<int,pii>pi2;
 
inline long long combine(long long a, long long b){
	return a+b;
}
 
struct node{
	int s,e,m;
	node *l,*r;
	long long v;
	long long lazyUpd;
	
	node(int ss, int ee):s(ss),e(ee),m((s+e)>>1),l(NULL),r(NULL),v(0),lazyUpd(0){
	}
	
	inline void inst(){
		if(l==NULL) l=new node(s,m);
		if(r==NULL) r=new node(m+1,e);
	}
	
	void self_add(int x){
		v+=(e-s+1)*x;
		lazyUpd+=x;
	}
	
	void forceProp(){
		if(s==e) return;
		if(lazyUpd){
			l->self_add(lazyUpd),r->self_add(lazyUpd);
			lazyUpd=0;
		}
	}
	
	void rangeUpd(int x, int y, int c){
		if(x<=s&&y>=e){
			self_add(c);
			return;
		}
		inst();
		forceProp();
		if(x<=m) l->rangeUpd(x,y,c);
		if(y>m){
			r->rangeUpd(x,y,c);
		}
		v=combine(l->v,r->v);
	}	
	
	long long query(int x, int y){
		if(x<=s&&y>=e){
			return v;
		}
		inst();
		forceProp();
		if(y<=m) return l->query(x,y);
		if(x>m) return r->query(x,y);
		return combine(l->query(x,m),r->query(m+1,y)); 
	}
};
 
struct event{
	int type, sign;
	event(int tt, int ss):type(tt),sign(ss){}
};
 
void solve(){
	int n,k,m;
	cin >> n >> k >> m;
	
	int temp,temp2,temp3;
	map<int,vector<int>>mp;
	for(int x=0;x<n;x++){
		cin >> temp >> temp2 >> temp3;
		//event hold(0,1);
		//event hold2(0,-1);
		mp[temp].push_back(1);
		mp[temp+temp2].push_back(2);
		
		if(temp+temp2<=temp3){
			//event hold3(1,1);
			//event hold4(1,-1);
			mp[temp+temp2].push_back(3);
			mp[temp3+1].push_back(4);
		}
	}
	
	int last=0;
	int car=0;
	int unpaid=0;
	//node st(0,1e9+5);
	vector<int>v;
	deque<pair<pii,int>>d;
	
	for(auto index:mp){
		//show(index.first,index.first);
		if(car>=k){
			//st.rangeUpd(last,index.first-1,unpaid);
			d.push_back({{last,index.first-1},unpaid});
			//d2.push_back({{last,index.first-1},unpaid});
			v.push_back(index.first-1);
			v.push_back(last+m-1);
		}
		
		for(auto it:index.second){
			if(it==1||it==2){
				//paid
				if(it==1) car++;
				else car--;
			}
			else{
				//unpaid
				if(it==3){
					car++;
					unpaid++;
				}
				else{
					car--;
					unpaid--;
				}
			}
		}
		last=index.first;
	}
	
	long long best=0;
	long long counter=0;
	int ptr=0;
	
	//for(auto it:d){
		//cout << it.first.first <<  " " << it.first.second << " " << it.second << endl;
	//}
	
	for(int x=0;x<(int)d.size();x++){
		counter+=(d[x].first.second-d[x].first.first+1)*d[x].second;
		int l=d[x].first.second-m+1;
		while(ptr<(int)d.size()&&l>d[ptr].first.second){
			counter-=(d[ptr].first.second-d[ptr].first.first+1)*d[ptr].second;
			ptr++;
		}
		int add=0;
		if(l>=d[ptr].first.first){
			add=-(l-d[ptr].first.first)*d[ptr].second;
		}
		best=max(best,counter+add);
		//show(counter,counter);
	}
	
	//show(best,best);
	
	ptr=(int)d.size()-1;
	counter=0;
	for(int x=(int)d.size()-1;x>=0;x--){
		counter+=(d[x].first.second-d[x].first.first+1)*d[x].second;
		int r=d[x].first.first+m-1;
		while(ptr>=0&&r<d[ptr].first.first){
			counter-=(d[ptr].first.second-d[ptr].first.first+1)*d[ptr].second;
			ptr--;
		}
		int add=0;
		if(r<=d[ptr].first.second){
			add=-(d[ptr].first.second-r)*d[ptr].second;
		}
		best=max(best,counter+add);
	}
	
	cout << best;
}
 
int32_t main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	int t=1;
	//cin >> t;
	while(t--){
		solve();
	}
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 600 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 360 KB Output is correct
7 Correct 1 ms 452 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 460 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct

Subtask #2
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 600 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 360 KB Output is correct
7 Correct 1 ms 452 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 460 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 604 KB Output is correct
13 Correct 1 ms 604 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 1 ms 604 KB Output is correct
17 Correct 1 ms 604 KB Output is correct
18 Correct 2 ms 604 KB Output is correct
19 Correct 1 ms 604 KB Output is correct
20 Correct 1 ms 604 KB Output is correct

Subtask #3
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 600 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 360 KB Output is correct
7 Correct 1 ms 452 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 460 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 604 KB Output is correct
13 Correct 1 ms 604 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 1 ms 604 KB Output is correct
17 Correct 1 ms 604 KB Output is correct
18 Correct 2 ms 604 KB Output is correct
19 Correct 1 ms 604 KB Output is correct
20 Correct 1 ms 604 KB Output is correct
21 Correct 265 ms 43224 KB Output is correct
22 Correct 310 ms 43204 KB Output is correct
23 Correct 322 ms 44144 KB Output is correct
24 Correct 275 ms 43924 KB Output is correct
25 Correct 260 ms 43476 KB Output is correct
26 Correct 275 ms 44612 KB Output is correct
27 Correct 267 ms 43752 KB Output is correct
28 Correct 273 ms 44688 KB Output is correct
29 Correct 289 ms 44668 KB Output is correct