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Submission #478447

# Submission time Handle Problem Language Result Execution time Memory
478447 2021-10-07T14:12:56 Z super_j6 Distributing Candies (IOI21_candies) C++17
100 / 100
 1053 ms 49376 KB 
//#include "candies.h"
#include <iostream>
#include <cstdio>
#include <algorithm>
#include <vector>
using namespace std;
#define endl '\n'
#define ll long long
#define pi pair<int, int>
#define f first
#define s second
#define vi vector<int>

const ll inf = 0x3f3f3f3f3f3f3f3f;

struct segTree{
	int l, r;
	segTree *tl, *tr;
	ll ss, mn, mx;
	
	segTree(int l, int r) : l(l), r(r){
		ss = mn = mx = 0;
		if(l != r){
			int mid = l + (r - l) / 2;
			tl = new segTree(l, mid);
			tr = new segTree(mid + 1, r);
		}
	}
	
	void add(int x, ll y){
		if(x < l || r < x) return;
		if(l == r) return (void)(ss += y, mn += y, mx += y);
		tl->add(x, y), tr->add(x, y);
		ss = tl->ss + tr->ss;
		mn = min(tl->mn + tr->ss, tr->mn);
		mx = max(tl->mx + tr->ss, tr->mx);
	}
	
	ll qry(ll x){
		if(l == r) return ss;
		return tr->mx <= x ? min(tl->qry(x - tr->ss) + tr->ss, tr->mn) : tr->qry(x);
	}
};

const int mxn = 200001;
int n, q;
vi b[mxn];

vi distribute_candies(vi a, vi l, vi r, vi v){
	n = a.size(), q = l.size();
	for(int i = 0; i < q; i++){
		b[l[i]].push_back(i + 1);
		b[r[i] + 1].push_back(-i - 1);
	} 
	
	vi f(n);
	segTree tre(-2, q - 1);
	tre.add(-2, inf), tre.add(-1, -inf);
	for(int i = 0; i < n; i++){
		for(int j : b[i]) tre.add(abs(j) - 1, j / abs(j) * v[abs(j) - 1]);
		int l = -1, r = a[i];
		while(r - l > 1){
			int mid = (l + r) / 2;
			if(mid - tre.qry(mid) < a[i]) l = mid;
			else r = mid;
		}
		f[i] = r;
	}
	
	return f;
}

int fufu(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	
	int n, q;
	cin >> n >> q;
	
	vi a(n), l(q), r(q), v(q);
	
	for(int i = 0; i < n; i++) cin >> a[i];
	for(int i = 0; i < q; i++) cin >> l[i] >> r[i] >> v[i];
	
	vi f = distribute_candies(a, l, r, v);
	
	cout << f[0];
	for(int i = 1; i < n; i++) cout << " " << f[i];
	cout << endl;
	
	return 0;
}

Compilation message

candies.cpp: In function 'std::vector<int> distribute_candies(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
candies.cpp:34:17: warning: 'tre.segTree::tr' may be used uninitialized in this function [-Wmaybe-uninitialized]
   34 |   ss = tl->ss + tr->ss;
      |                 ^~
candies.cpp:57:10: note: 'tre.segTree::tr' was declared here
   57 |  segTree tre(-2, q - 1);
      |          ^~~
candies.cpp:34:17: warning: 'tre.segTree::tl' may be used uninitialized in this function [-Wmaybe-uninitialized]
   34 |   ss = tl->ss + tr->ss;
      |                 ^~
candies.cpp:57:10: note: 'tre.segTree::tl' was declared here
   57 |  segTree tre(-2, q - 1);
      |          ^~~

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4940 KB Output is correct
2 Correct 3 ms 4988 KB Output is correct
3 Correct 5 ms 5256 KB Output is correct
4 Correct 5 ms 5324 KB Output is correct
5 Correct 6 ms 5380 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 828 ms 42964 KB Output is correct
2 Correct 1018 ms 46752 KB Output is correct
3 Correct 1053 ms 46588 KB Output is correct

Subtask #3
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4940 KB Output is correct
2 Correct 346 ms 39856 KB Output is correct
3 Correct 255 ms 10976 KB Output is correct
4 Correct 858 ms 48592 KB Output is correct
5 Correct 869 ms 49092 KB Output is correct
6 Correct 745 ms 49376 KB Output is correct
7 Correct 882 ms 48836 KB Output is correct

Subtask #4
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4940 KB Output is correct
2 Correct 3 ms 4940 KB Output is correct
3 Correct 115 ms 38852 KB Output is correct
4 Correct 154 ms 8884 KB Output is correct
5 Correct 340 ms 42184 KB Output is correct
6 Correct 341 ms 42864 KB Output is correct
7 Correct 279 ms 43448 KB Output is correct
8 Correct 338 ms 42036 KB Output is correct
9 Correct 525 ms 43508 KB Output is correct

Subtask #5
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4940 KB Output is correct
2 Correct 3 ms 4988 KB Output is correct
3 Correct 5 ms 5256 KB Output is correct
4 Correct 5 ms 5324 KB Output is correct
5 Correct 6 ms 5380 KB Output is correct
6 Correct 828 ms 42964 KB Output is correct
7 Correct 1018 ms 46752 KB Output is correct
8 Correct 1053 ms 46588 KB Output is correct
9 Correct 4 ms 4940 KB Output is correct
10 Correct 346 ms 39856 KB Output is correct
11 Correct 255 ms 10976 KB Output is correct
12 Correct 858 ms 48592 KB Output is correct
13 Correct 869 ms 49092 KB Output is correct
14 Correct 745 ms 49376 KB Output is correct
15 Correct 882 ms 48836 KB Output is correct
16 Correct 3 ms 4940 KB Output is correct
17 Correct 3 ms 4940 KB Output is correct
18 Correct 115 ms 38852 KB Output is correct
19 Correct 154 ms 8884 KB Output is correct
20 Correct 340 ms 42184 KB Output is correct
21 Correct 341 ms 42864 KB Output is correct
22 Correct 279 ms 43448 KB Output is correct
23 Correct 338 ms 42036 KB Output is correct
24 Correct 525 ms 43508 KB Output is correct
25 Correct 3 ms 4944 KB Output is correct
26 Correct 165 ms 8968 KB Output is correct
27 Correct 341 ms 39328 KB Output is correct
28 Correct 743 ms 47292 KB Output is correct
29 Correct 701 ms 47632 KB Output is correct
30 Correct 694 ms 47816 KB Output is correct
31 Correct 670 ms 48000 KB Output is correct
32 Correct 605 ms 48140 KB Output is correct