oj.uz

Submission #1002648

# Submission time Handle Problem Language Result Execution time Memory
1002648 2024-06-19T17:36:18 Z Lalic Autobahn (COI21_autobahn) C++17
50 / 100
 68 ms 16048 KB 
#include <bits/stdc++.h>
using namespace std;

#define fi first
#define se second
#define pb push_back
#define all(x) x.begin(), x.end()
#define allr(x) x.rbegin(), x.rend()
#define mp make_pair

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef complex<double> cd;

const int MAXN = 1e5+10;
const int MOD = 1e9+7;
const int INF = 0x3f3f3f3f;
const ll LINF = 0x3f3f3f3f3f3f3f3f;
const double PI = acos(-1);

struct occ{
	ll x;
	int tipo, val;
	
	occ(ll a, int b, int c): x(a), tipo(b), val(c) {}
	
	bool operator < (occ a) const{
		return this->x < a.x;
	}
};

void solve(){
	int n, k, x; cin >> n >> k >> x;
	vector<occ> arr;
	
	for(int i=0;i<n;i++){
		ll l, t, r; cin >> l >> t >> r;
		
		arr.pb(occ(l, 0, 1));
		arr.pb(occ(r+1, 0, -1));
		if(l+t<=r){
			arr.pb(occ(l+t, 1, 1));
			arr.pb(occ(r+1, 1, -1));
		}
	}
	
	sort(all(arr));
	arr.pb(occ(INF, 0, 0));
	
	int low=-x, high=0, ptrl=0, ptrh=0;
	ll normH=0, normL=0, specH=0, specL=0, curr=0, ans=0;
	while(1){
		if(ptrh==(int)arr.size()-1 && ptrl==(int)arr.size()-1) break;
		
		if(arr[ptrh].x-high<=arr[ptrl].x-low){
			ll diff=arr[ptrh].x-high;
			if(normH>=k) curr+=specH*diff;
			if(normL>=k) curr-=specL*diff;
			
			if(arr[ptrh].tipo==0) normH+=arr[ptrh].val;
			else specH+=arr[ptrh].val;
			
			high+=diff;
			low+=diff;
			ptrh++;
		}
		else{
			ll diff=arr[ptrl].x-low;
			if(normH>=k) curr+=specH*diff;
			if(normL>=k) curr-=specL*diff;
			
			if(arr[ptrl].tipo==0) normL+=arr[ptrl].val;
			else specL+=arr[ptrl].val;
			
			high+=diff;
			low+=diff;
			ptrl++;
		}
		
		while(arr[ptrh].x-high==0){
			if(arr[ptrh].tipo==0) normH+=arr[ptrh].val;
			else specH+=arr[ptrh].val;
			ptrh++;
		}
		
		while(arr[ptrl].x-low==0){
			if(arr[ptrl].tipo==0) normL+=arr[ptrl].val;
			else specL+=arr[ptrl].val;
			ptrl++;
		}
		
		ans=max(ans, curr);
	}
	
	cout << ans << "\n";
}
	

int32_t main(){
	ios_base::sync_with_stdio(false); cin.tie(NULL);
	
	int tt=1;
	//~ cin >> tt;
	while(tt--) solve();
	return 0;
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 460 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 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 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 460 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 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 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 464 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct

Subtask #3
0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 460 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 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 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 464 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 57 ms 10700 KB Output is correct
22 Correct 57 ms 10692 KB Output is correct
23 Correct 68 ms 10704 KB Output is correct
24 Runtime error 59 ms 16048 KB Execution killed with signal 11
25 Halted 0 ms 0 KB -