oj.uz

Submission #132650

# Submission time Handle Problem Language Result Execution time Memory
132650 2019-07-19T09:32:49 Z antimirage Sorting (IOI15_sorting) C++14
100 / 100
 259 ms 21880 KB 
#include "sorting.h"
#include <bits/stdc++.h>

#define fr first
#define sc second
#define pb push_back
#define mk make_pair
#define all(s) s.begin(), s.end()

using namespace std;

const int N = 2e5 + 5;

int sz, cnt, res, u[N], a[N], pos[N], asd[N];

void dfs (int v) {
	cnt++;
	u[v] = 1;
	if (u[ a[v] ] == 0)
		dfs(a[v]);
}

int findSwapPairs(int n, int b[], int m, int x[], int y[], int p[], int q[]) {
    bool fl = 1;
    for (int i = 0; i < n; i++) {
		a[i] = b[i];
		if (a[i] != i)
			fl = 0;
	}
	if (fl)
		return 0;
	
	int l = 0, r = m;
	while (r - l > 1) {
		int md = (l + r) >> 1;
		
		for (int i = 0; i < n; i++)
			a[i] = b[i];
			
		for (int i = 0; i < md; i++) {
			swap( a[ x[i] ], a[ y[i] ] );
		}
		res = 0;
		memset(u, 0, sizeof(u));
		for (int j = 0; j < n; j++) {
			if (u[j]) continue;
			cnt = 0; dfs(j);
			res += cnt - 1;
		}
		if (res <= md)
			r = md;
		else
			l = md;
		
	}
	for (int i = 0; i < n; i++)
		a[i] = b[i];
		
	for (int i = 0; i < r; i++) {
		swap( a[ x[i] ], a[ y[i] ] );
	}
	for (int j = 0; j < n; j++)
		pos[b[j]] = j, asd[a[j]] = j;
	
	int k = 0;
	
	for (int j = 0; j < n; j++) {
		if (a[j] == j) continue;
		pos[ b[x[k]] ] = y[k];
		pos[ b[y[k]] ] = x[k];
		swap( b[x[k]], b[y[k]] );
		p[k] = pos[a[j]], q[k] = pos[j];
		swap( b[pos[ a[j] ]], b[pos[j]] );
		swap( pos[ a[j] ], pos[j] );
		swap(a[j], a[asd[j]]);
		asd[a[asd[j]]] = asd[j];
		k++;
	}
	return r;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 3 ms 1144 KB Output is correct
4 Correct 3 ms 1144 KB Output is correct
5 Correct 3 ms 1144 KB Output is correct
6 Correct 3 ms 1144 KB Output is correct
7 Correct 3 ms 1144 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 3 ms 1144 KB Output is correct
4 Correct 3 ms 1144 KB Output is correct
5 Correct 3 ms 1144 KB Output is correct
6 Correct 3 ms 1144 KB Output is correct
7 Correct 3 ms 1144 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 3 ms 1144 KB Output is correct
11 Correct 3 ms 1144 KB Output is correct
12 Correct 7 ms 1272 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 3 ms 1144 KB Output is correct
3 Correct 3 ms 1144 KB Output is correct
4 Correct 3 ms 1144 KB Output is correct
5 Correct 3 ms 1144 KB Output is correct
6 Correct 3 ms 1144 KB Output is correct

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 3 ms 1144 KB Output is correct
4 Correct 3 ms 1144 KB Output is correct
5 Correct 3 ms 1144 KB Output is correct
6 Correct 3 ms 1144 KB Output is correct
7 Correct 3 ms 1144 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 3 ms 1144 KB Output is correct
11 Correct 3 ms 1144 KB Output is correct
12 Correct 7 ms 1272 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 3 ms 1144 KB Output is correct
15 Correct 3 ms 1144 KB Output is correct
16 Correct 3 ms 1144 KB Output is correct
17 Correct 3 ms 1144 KB Output is correct
18 Correct 3 ms 1144 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 4 ms 1400 KB Output is correct
22 Correct 4 ms 1504 KB Output is correct
23 Correct 4 ms 1400 KB Output is correct
24 Correct 4 ms 1272 KB Output is correct
25 Correct 4 ms 1276 KB Output is correct
26 Correct 4 ms 1272 KB Output is correct
27 Correct 4 ms 1272 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 1272 KB Output is correct
2 Correct 4 ms 1276 KB Output is correct
3 Correct 4 ms 1272 KB Output is correct
4 Correct 3 ms 504 KB Output is correct
5 Correct 5 ms 1272 KB Output is correct
6 Correct 4 ms 1272 KB Output is correct
7 Correct 5 ms 1272 KB Output is correct
8 Correct 5 ms 1272 KB Output is correct
9 Correct 4 ms 1272 KB Output is correct
10 Correct 4 ms 1272 KB Output is correct
11 Correct 4 ms 1272 KB Output is correct
12 Correct 4 ms 1272 KB Output is correct
13 Correct 5 ms 1272 KB Output is correct
14 Correct 4 ms 1272 KB Output is correct

Subtask #6
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 1272 KB Output is correct
2 Correct 4 ms 1276 KB Output is correct
3 Correct 4 ms 1272 KB Output is correct
4 Correct 3 ms 504 KB Output is correct
5 Correct 5 ms 1272 KB Output is correct
6 Correct 4 ms 1272 KB Output is correct
7 Correct 5 ms 1272 KB Output is correct
8 Correct 5 ms 1272 KB Output is correct
9 Correct 4 ms 1272 KB Output is correct
10 Correct 4 ms 1272 KB Output is correct
11 Correct 4 ms 1272 KB Output is correct
12 Correct 4 ms 1272 KB Output is correct
13 Correct 5 ms 1272 KB Output is correct
14 Correct 4 ms 1272 KB Output is correct
15 Correct 228 ms 12024 KB Output is correct
16 Correct 188 ms 19904 KB Output is correct
17 Correct 259 ms 20880 KB Output is correct
18 Correct 50 ms 14200 KB Output is correct
19 Correct 170 ms 19292 KB Output is correct
20 Correct 190 ms 19964 KB Output is correct
21 Correct 182 ms 19960 KB Output is correct
22 Correct 180 ms 16376 KB Output is correct
23 Correct 197 ms 21648 KB Output is correct
24 Correct 243 ms 21368 KB Output is correct
25 Correct 225 ms 21112 KB Output is correct
26 Correct 183 ms 19832 KB Output is correct
27 Correct 159 ms 19192 KB Output is correct
28 Correct 218 ms 21112 KB Output is correct
29 Correct 213 ms 20672 KB Output is correct
30 Correct 112 ms 18552 KB Output is correct
31 Correct 223 ms 21060 KB Output is correct
32 Correct 194 ms 20864 KB Output is correct
33 Correct 225 ms 21368 KB Output is correct
34 Correct 228 ms 21408 KB Output is correct
35 Correct 170 ms 19064 KB Output is correct
36 Correct 56 ms 17528 KB Output is correct
37 Correct 249 ms 21880 KB Output is correct
38 Correct 224 ms 21112 KB Output is correct
39 Correct 225 ms 21240 KB Output is correct