oj.uz

Submission #1031253

# Submission time Handle Problem Language Result Execution time Memory
1031253 2024-07-22T16:26:25 Z Andrey Sorting (IOI15_sorting) C++14
100 / 100
 170 ms 22768 KB 
#include "sorting.h"
#include<bits/stdc++.h>
using namespace std;

vector<int> haha(200001);
vector<int> bruh(200001);
vector<pair<int,int>> wut(0);

int calc(int n) {
	wut.clear();
	for(int i = 0; i < n; i++) {
		bruh[i] = -1;
	}
	int br = 0;
	for(int i = 0; i < n; i++) {
		if(bruh[i] == -1) {
			br++;
			int p = i;
			vector<pair<int,int>> wow(0);
			while(bruh[p] == -1) {
				bruh[p] = 1;
				wow.push_back({haha[p],haha[haha[p]]});
				p = haha[p];
			}
			wow.pop_back();
			for(int j = 0; j < wow.size(); j++) {
				wut.push_back(wow[j]);
			}
		}
	}
	return n-br;
}

int findSwapPairs(int n, int s[], int m, int x[], int y[], int p[], int q[]) {
	int l = 0,r = n;
	while(l < r) {
		int mid = (l+r)/2;
		for(int j = 0; j < n; j++) {
			haha[j] = s[j];
		}
		for(int j = 0; j < mid; j++) {
			swap(haha[x[j]],haha[y[j]]);
		}
		if(calc(n) <= mid) {
			r = mid;
		}
		else {
			l = mid+1;
		}
	}
	for(int j = 0; j < n; j++) {
		haha[j] = s[j];
	}
	for(int j = 0; j < l; j++) {
		swap(haha[x[j]],haha[y[j]]);
	}
	calc(n);
	vector<int> pos(n);
	for(int i = 0; i < n; i++) {
		haha[i] = s[i];
		pos[haha[i]] = i;
	}
	for(int i = 0; i < l; i++) {
		int a = x[i],b = y[i];
		swap(pos[haha[a]],pos[haha[b]]);
		swap(haha[a],haha[b]);
		if(i >= wut.size()) {
			p[i] = 0;
			q[i] = 0;
		}
		else {
			p[i] = pos[wut[i].first];
			q[i] = pos[wut[i].second];
			swap(haha[pos[wut[i].first]],haha[pos[wut[i].second]]);
			swap(pos[wut[i].first],pos[wut[i].second]);
		}
	}
	return l;
}

Compilation message

sorting.cpp: In function 'int calc(int)':
sorting.cpp:26:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |    for(int j = 0; j < wow.size(); j++) {
      |                   ~~^~~~~~~~~~~~
sorting.cpp: In function 'int findSwapPairs(int, int*, int, int*, int*, int*, int*)':
sorting.cpp:67:8: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   67 |   if(i >= wut.size()) {
      |      ~~^~~~~~~~~~~~~
sorting.cpp:34:39: warning: unused parameter 'm' [-Wunused-parameter]
   34 | int findSwapPairs(int n, int s[], int m, int x[], int y[], int p[], int q[]) {
      |                                   ~~~~^

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1884 KB Output is correct
2 Correct 1 ms 1884 KB Output is correct
3 Correct 2 ms 1884 KB Output is correct
4 Correct 1 ms 1884 KB Output is correct
5 Correct 1 ms 1884 KB Output is correct
6 Correct 1 ms 2136 KB Output is correct
7 Correct 1 ms 1884 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1884 KB Output is correct
2 Correct 1 ms 1884 KB Output is correct
3 Correct 2 ms 1884 KB Output is correct
4 Correct 1 ms 1884 KB Output is correct
5 Correct 1 ms 1884 KB Output is correct
6 Correct 1 ms 2136 KB Output is correct
7 Correct 1 ms 1884 KB Output is correct
8 Correct 1 ms 1880 KB Output is correct
9 Correct 1 ms 2020 KB Output is correct
10 Correct 1 ms 1884 KB Output is correct
11 Correct 1 ms 1884 KB Output is correct
12 Correct 1 ms 1884 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1884 KB Output is correct
2 Correct 1 ms 1880 KB Output is correct
3 Correct 1 ms 1884 KB Output is correct
4 Correct 1 ms 1884 KB Output is correct
5 Correct 1 ms 1884 KB Output is correct
6 Correct 1 ms 1884 KB Output is correct

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1884 KB Output is correct
2 Correct 1 ms 1884 KB Output is correct
3 Correct 2 ms 1884 KB Output is correct
4 Correct 1 ms 1884 KB Output is correct
5 Correct 1 ms 1884 KB Output is correct
6 Correct 1 ms 2136 KB Output is correct
7 Correct 1 ms 1884 KB Output is correct
8 Correct 1 ms 1880 KB Output is correct
9 Correct 1 ms 2020 KB Output is correct
10 Correct 1 ms 1884 KB Output is correct
11 Correct 1 ms 1884 KB Output is correct
12 Correct 1 ms 1884 KB Output is correct
13 Correct 1 ms 1884 KB Output is correct
14 Correct 1 ms 1880 KB Output is correct
15 Correct 1 ms 1884 KB Output is correct
16 Correct 1 ms 1884 KB Output is correct
17 Correct 1 ms 1884 KB Output is correct
18 Correct 1 ms 1884 KB Output is correct
19 Correct 1 ms 1884 KB Output is correct
20 Correct 1 ms 1880 KB Output is correct
21 Correct 2 ms 2140 KB Output is correct
22 Correct 1 ms 2140 KB Output is correct
23 Correct 1 ms 2136 KB Output is correct
24 Correct 1 ms 2140 KB Output is correct
25 Correct 2 ms 2140 KB Output is correct
26 Correct 2 ms 2248 KB Output is correct
27 Correct 2 ms 2136 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2136 KB Output is correct
2 Correct 1 ms 2032 KB Output is correct
3 Correct 2 ms 2140 KB Output is correct
4 Correct 2 ms 2140 KB Output is correct
5 Correct 2 ms 2140 KB Output is correct
6 Correct 2 ms 2140 KB Output is correct
7 Correct 2 ms 2100 KB Output is correct
8 Correct 2 ms 2136 KB Output is correct
9 Correct 2 ms 2092 KB Output is correct
10 Correct 2 ms 2008 KB Output is correct
11 Correct 2 ms 2136 KB Output is correct
12 Correct 3 ms 2032 KB Output is correct
13 Correct 2 ms 2136 KB Output is correct
14 Correct 2 ms 2140 KB Output is correct

Subtask #6
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2136 KB Output is correct
2 Correct 1 ms 2032 KB Output is correct
3 Correct 2 ms 2140 KB Output is correct
4 Correct 2 ms 2140 KB Output is correct
5 Correct 2 ms 2140 KB Output is correct
6 Correct 2 ms 2140 KB Output is correct
7 Correct 2 ms 2100 KB Output is correct
8 Correct 2 ms 2136 KB Output is correct
9 Correct 2 ms 2092 KB Output is correct
10 Correct 2 ms 2008 KB Output is correct
11 Correct 2 ms 2136 KB Output is correct
12 Correct 3 ms 2032 KB Output is correct
13 Correct 2 ms 2136 KB Output is correct
14 Correct 2 ms 2140 KB Output is correct
15 Correct 126 ms 20368 KB Output is correct
16 Correct 132 ms 19696 KB Output is correct
17 Correct 147 ms 22408 KB Output is correct
18 Correct 115 ms 16536 KB Output is correct
19 Correct 164 ms 18736 KB Output is correct
20 Correct 157 ms 20192 KB Output is correct
21 Correct 146 ms 20260 KB Output is correct
22 Correct 119 ms 16128 KB Output is correct
23 Correct 135 ms 22708 KB Output is correct
24 Correct 139 ms 22744 KB Output is correct
25 Correct 131 ms 22768 KB Output is correct
26 Correct 149 ms 20204 KB Output is correct
27 Correct 141 ms 18752 KB Output is correct
28 Correct 156 ms 21124 KB Output is correct
29 Correct 164 ms 21188 KB Output is correct
30 Correct 143 ms 17864 KB Output is correct
31 Correct 148 ms 21612 KB Output is correct
32 Correct 160 ms 20940 KB Output is correct
33 Correct 154 ms 22656 KB Output is correct
34 Correct 138 ms 21420 KB Output is correct
35 Correct 161 ms 18340 KB Output is correct
36 Correct 109 ms 16724 KB Output is correct
37 Correct 168 ms 22752 KB Output is correct
38 Correct 152 ms 21400 KB Output is correct
39 Correct 170 ms 22052 KB Output is correct