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Submission #597763

# Submission time Handle Problem Language Result Execution time Memory
597763 2022-07-16T20:25:25 Z idiot123 Distributing Candies (IOI21_candies) C++17
100 / 100
 630 ms 42948 KB 
#include<bits/stdc++.h>
#include "candies.h"

using namespace std;

const long long INF = 1e18;

class Tree{
	private:
	int lrSize = 2;
	vector<long long> maxVal;
	vector<long long> minVal;
	vector<long long> lazy;
	
	void update(int pos, bool up){
		minVal[pos] = min(minVal[2*pos], minVal[2*pos+1]);
		maxVal[pos] = max(maxVal[2*pos], maxVal[2*pos+1]);
		if(pos > 1 && up)update(pos/2, true);
	}
	
	void push(int pos){
		minVal[2*pos] += lazy[pos];
		maxVal[2*pos] += lazy[pos];
		lazy[2*pos] += lazy[pos];
		minVal[2*pos + 1] += lazy[pos];
		maxVal[2*pos + 1] += lazy[pos];
		lazy[2*pos + 1] += lazy[pos];
		lazy[pos] = 0;
	}
	
	void rangeAdd(int a, int b, int l, int r, int pos, long long val){
		if(b < l || r < a)return;
		if(a <= l && r <= b){
			minVal[pos] += val; maxVal[pos] += val;
			lazy[pos] += val;
		}else{
			int m = (l + r) / 2;
			push(pos);
			rangeAdd(a, b, l, m, 2*pos, val);
			rangeAdd(a, b, m+1, r, 2*pos + 1, val);
			update(pos, false);
		}
	}
	
	public:
	Tree(int n){
		while(lrSize < n)lrSize *= 2;
		maxVal.resize(2*lrSize, 0);
		minVal.resize(2*lrSize, 0);
		lazy.resize(2*lrSize, 0);
	}
	
	void add(int a, long long val){
		rangeAdd(a, lrSize-1, 0, lrSize-1, 1, val);
	}
	
	long long getAns(long long c){
		long long maxV = -INF;
		long long minV = INF;
		int pos = 1;
		while(pos < lrSize){
			push(pos);
			if(max(maxVal[2*pos + 1], maxV) - min(minVal[2*pos + 1], minV) >= c){
				pos = 2*pos + 1;
			}else{
				maxV = max(maxV, maxVal[2*pos + 1]);
				minV = min(minV, minVal[2*pos + 1]);
				pos = 2 * pos;
			}
		}
		long long val1 = minVal[pos];
		pos = 1;
		while(pos < lrSize){
			push(pos);
			pos = 2*pos + 1;
		}
		long long val2 = minVal[pos];
		//cout<<"Debug info "<<val1<<" "<<val2<<"\n";
		if(val1 < minV){
			return c - (maxV - val2);
		}else{
			return (val2 - minV);
		}
	}
};

vector<int> distribute_candies(vector<int> c, vector<int> l, vector<int> r, vector<int> v) {
    int n = c.size();
    int q = l.size();
    vector<int> s(n);
    vector<vector<int>> add(n);
    vector<vector<int>> remove(n);
    for(int i = 0; i < q; i++){
		add[l[i]].push_back(i);
		remove[r[i]].push_back(i);
	}
	Tree tree(q + 2);
	tree.add(0, INF);
	tree.add(1, -INF);
	for(int i = 0; i < n; i++){
		for(auto x : add[i]){
			tree.add(x + 2, v[x]);
		}
		s[i] = tree.getAns(c[i]);
		for(auto x : remove[i]){
			tree.add(x+2, -v[x]);
		}
	}
	return s;
}

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 2 ms 468 KB Output is correct
4 Correct 2 ms 468 KB Output is correct
5 Correct 3 ms 596 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 594 ms 41132 KB Output is correct
2 Correct 593 ms 40364 KB Output is correct
3 Correct 630 ms 40276 KB Output is correct

Subtask #3
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 249 ms 23240 KB Output is correct
3 Correct 85 ms 14412 KB Output is correct
4 Correct 588 ms 42232 KB Output is correct
5 Correct 586 ms 42676 KB Output is correct
6 Correct 598 ms 42948 KB Output is correct
7 Correct 571 ms 42288 KB Output is correct

Subtask #4
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 177 ms 21816 KB Output is correct
4 Correct 81 ms 13412 KB Output is correct
5 Correct 441 ms 34488 KB Output is correct
6 Correct 443 ms 34972 KB Output is correct
7 Correct 427 ms 35668 KB Output is correct
8 Correct 444 ms 34328 KB Output is correct
9 Correct 476 ms 35740 KB Output is correct

Subtask #5
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 2 ms 468 KB Output is correct
4 Correct 2 ms 468 KB Output is correct
5 Correct 3 ms 596 KB Output is correct
6 Correct 594 ms 41132 KB Output is correct
7 Correct 593 ms 40364 KB Output is correct
8 Correct 630 ms 40276 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 249 ms 23240 KB Output is correct
11 Correct 85 ms 14412 KB Output is correct
12 Correct 588 ms 42232 KB Output is correct
13 Correct 586 ms 42676 KB Output is correct
14 Correct 598 ms 42948 KB Output is correct
15 Correct 571 ms 42288 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 177 ms 21816 KB Output is correct
19 Correct 81 ms 13412 KB Output is correct
20 Correct 441 ms 34488 KB Output is correct
21 Correct 443 ms 34972 KB Output is correct
22 Correct 427 ms 35668 KB Output is correct
23 Correct 444 ms 34328 KB Output is correct
24 Correct 476 ms 35740 KB Output is correct
25 Correct 0 ms 212 KB Output is correct
26 Correct 73 ms 13516 KB Output is correct
27 Correct 242 ms 22920 KB Output is correct
28 Correct 598 ms 40796 KB Output is correct
29 Correct 580 ms 41132 KB Output is correct
30 Correct 589 ms 41384 KB Output is correct
31 Correct 593 ms 41648 KB Output is correct
32 Correct 572 ms 41800 KB Output is correct