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Submission #578471

# Submission time Handle Problem Language Result Execution time Memory
578471 2022-06-17T03:40:48 Z amunduzbaev The Potion of Great Power (CEOI20_potion) C++17
56 / 100
 3000 ms 93312 KB 
#include "bits/stdc++.h"
using namespace std;
#ifndef EVAL
#include "grader.cpp"
#endif

#define ar array
const int N = 1e5 + 5;
const int C = 50;
vector<ar<int, 2>> edges[N];
vector<multiset<int>> vals[N];
vector<int> tim[N];
int h[N], n;

void init(int N, int D, int H[]) {
	n = N;
	for(int i=0;i<N;i++){
		h[i] = H[i];
	}
}

void curseChanges(int U, int A[], int B[]) {
	set<ar<int, 2>> ss;
	for(int i=0;i<U;i++){
		if(A[i] > B[i]) swap(A[i], B[i]);
		int t = 1;
		if(ss.count({A[i], B[i]})) t = -1;
		edges[A[i]].push_back({i + 1, (B[i] + 1) * t});
		edges[B[i]].push_back({i + 1, (A[i] + 1) * t});
		if(t == 1) ss.insert({A[i], B[i]});
		else ss.erase({A[i], B[i]});
	}
	
	for(int i=0;i<n;i++){
		multiset<int> ss;
		for(int j=0;j<(int)edges[i].size();j++){
			if(j % C == 0){
				vals[i].push_back(ss);
				tim[i].push_back(edges[i][j][0]);
			}
			
			if(edges[i][j][1] < 0){
				ss.erase(ss.find(h[-edges[i][j][1] - 1]));
			} else {
				ss.insert(h[edges[i][j][1] - 1]);
			}
		}
	}
	
	//~ for(int i=0;i<n;i++){
		//~ cout<<i<<"\n";
		//~ for(auto x : edges[i]) cout<<x[0]<<" "<<x[1]<<"\n";
		//~ cout<<"\n";
	//~ } 
}

multiset<int> get(int a, int t){
	int j = upper_bound(tim[a].begin(), tim[a].end(), t) - tim[a].begin();
	if(!j){
		return {};
	} j--;
	
	multiset<int> res = vals[a][j];
	for(int k=j*C;k<(int)edges[a].size() && edges[a][k][0]<=t;k++){
		if(edges[a][k][1] > 0){
			res.insert(h[edges[a][k][1] - 1]);
		} else {
			res.erase(res.find(h[-edges[a][k][1] - 1]));
		}
	}
	
	return res;
}

int question(int x, int y, int v) {
	multiset<int> a = get(x, v);
	multiset<int> b = get(y, v);
	//~ for(auto x : a) cout<<x<<" ";
	//~ cout<<"\n";
	//~ for(auto x : b) cout<<x<<" ";
	//~ cout<<"\n";
	//~ int res = 1e9;
	//~ for(auto x : S[x]){
		//~ auto it = S[y].lower_bound(x);
		//~ if(it != S[y].end()){
			//~ res = min(res, *it - x);
		//~ } if(it != S[y].begin()){
			//~ it--;
			//~ res = min(res, x - *it);
		//~ }
	//~ }
	
	//~ return res;
	auto lx = a.begin(), rx = b.begin();
	int last = -1e9, f = -1, res = 1e9;
	while(lx != a.end() || rx != b.end()){
		if(f == 0 && rx != b.end()) res = min(res, *rx - last);
		if(f == 1 && lx != a.end()) res = min(res, *lx - last);
		if(lx != a.end() && rx != b.end()){
			if(*lx <= *rx) last = *lx, f = 0, lx++;
			else last = *rx, f = 1, rx++;
		} else break;
	}
	
	return res;
}

/*

6 5 11 4
2 42 1000 54 68 234
0 1
2 0
3 4
3 5
3 5
1 3
5 3
0 5
3 0
1 3
3 5
0 3 4 26 
3 0 8 0
0 5 5 1000000000
3 0 11 14
 
*/

Subtask #1
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 7248 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 7504 KB Output is correct
2 Correct 7 ms 7504 KB Output is correct
3 Correct 7 ms 7536 KB Output is correct
4 Correct 20 ms 8432 KB Output is correct

Subtask #3
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 394 ms 33928 KB Output is correct
2 Correct 431 ms 34052 KB Output is correct
3 Correct 356 ms 17136 KB Output is correct
4 Correct 1935 ms 65124 KB Output is correct
5 Correct 698 ms 25412 KB Output is correct
6 Execution timed out 3076 ms 93144 KB Time limit exceeded
7 Halted 0 ms 0 KB -

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 438 ms 33924 KB Output is correct
2 Correct 2169 ms 93312 KB Output is correct
3 Correct 1483 ms 59308 KB Output is correct
4 Correct 2417 ms 92548 KB Output is correct
5 Correct 572 ms 37564 KB Output is correct
6 Correct 2510 ms 92856 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 47 ms 9048 KB Output is correct
2 Correct 175 ms 7888 KB Output is correct
3 Correct 264 ms 7908 KB Output is correct
4 Correct 981 ms 9960 KB Output is correct
5 Correct 952 ms 9816 KB Output is correct
6 Correct 156 ms 8144 KB Output is correct
7 Correct 792 ms 8936 KB Output is correct

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 7248 KB Output is correct
2 Correct 7 ms 7504 KB Output is correct
3 Correct 7 ms 7504 KB Output is correct
4 Correct 7 ms 7536 KB Output is correct
5 Correct 20 ms 8432 KB Output is correct
6 Correct 394 ms 33928 KB Output is correct
7 Correct 431 ms 34052 KB Output is correct
8 Correct 356 ms 17136 KB Output is correct
9 Correct 1935 ms 65124 KB Output is correct
10 Correct 698 ms 25412 KB Output is correct
11 Execution timed out 3076 ms 93144 KB Time limit exceeded
12 Halted 0 ms 0 KB -