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Submission #155092

# Submission time Handle Problem Language Result Execution time Memory
155092 2019-09-26T09:01:18 Z dennisstar Sorting (IOI15_sorting) C++11
100 / 100
 756 ms 25052 KB 
#include "sorting.h"
#include <bits/stdc++.h>
using namespace std;
int *s, *x, *y, *p, *q;
int ans;
int n, m;
int A[200010], B[200010], posB[200010], F[200010], posF[200010];
//현재 에르맥, 현재 수열, 현재 수열의 pos, 결과 수열, 결과 수열의 pos
int seq[600010][2], tp;
bool canSwap(int l)
{
	int i; tp=0;
	for (i=0; i<n; i++) A[i]=i, B[i]=s[i], posB[s[i]]=i, F[i]=s[i], posF[s[i]]=i;
	for (i=0; i<l; i++) {
		swap(F[x[i]], F[y[i]]);
		swap(posF[F[x[i]]], posF[F[y[i]]]);
	}
	for (i=l-1; i>=0; i--) swap(A[x[i]], A[y[i]]);
	while (tp<n&&F[tp]==tp) tp++;
	for (i=0; i<l; i++) {
		swap(A[x[i]], A[y[i]]);
		swap(B[x[i]], B[y[i]]);
		swap(posB[B[x[i]]], posB[B[y[i]]]);
		int i1=F[tp], i2=F[posF[tp]];
		swap(F[tp], F[posF[tp]]);
		swap(posF[i1], posF[i2]);
		seq[i][0]=posB[i1], seq[i][1]=posB[i2];
		swap(B[posB[i1]], B[posB[i2]]);
		swap(posB[i1], posB[i2]);
		//for (int j=0; j<n; j++) printf("%d ", A[j]); puts("");
		//for (int j=0; j<n; j++) printf("%d ", B[j]); puts("");
		//for (int j=0; j<n; j++) printf("%d ", F[j]); puts("");
		//puts("");
		while (tp<n&&F[tp]==tp) tp++;
		if (tp>=n) break;
	}
	if (tp>=n) {
		//printf("%d\n", l);
		for (int j=0; j<=i; j++) p[j]=seq[j][0], q[j]=seq[j][1];
		for (int j=i+1; j<l; j++) p[j]=q[j]=1;
		ans=l;
		return true;
	}
	return false;
}

int findSwapPairs(int N, int S[], int M, int X[], int Y[], int P[], int Q[]) {
    s=S; x=X; y=Y; p=P; q=Q; n=N; m=M;
	int st=0, re=M;
	while (st<re) {
		int md=(st+re)/2;
		if (canSwap(md)) re=md;
		else st=md+1;
		//puts("");
	}
	return ans;
}

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 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 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 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 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 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 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 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 504 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 3 ms 632 KB Output is correct
22 Correct 3 ms 632 KB Output is correct
23 Correct 3 ms 628 KB Output is correct
24 Correct 3 ms 636 KB Output is correct
25 Correct 3 ms 632 KB Output is correct
26 Correct 3 ms 632 KB Output is correct
27 Correct 3 ms 632 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 504 KB Output is correct
2 Correct 4 ms 632 KB Output is correct
3 Correct 4 ms 632 KB Output is correct
4 Correct 3 ms 504 KB Output is correct
5 Correct 3 ms 504 KB Output is correct
6 Correct 3 ms 508 KB Output is correct
7 Correct 4 ms 820 KB Output is correct
8 Correct 4 ms 608 KB Output is correct
9 Correct 4 ms 504 KB Output is correct
10 Correct 4 ms 504 KB Output is correct
11 Correct 4 ms 504 KB Output is correct
12 Correct 3 ms 632 KB Output is correct
13 Correct 4 ms 632 KB Output is correct
14 Correct 2 ms 504 KB Output is correct

Subtask #6
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 504 KB Output is correct
2 Correct 4 ms 632 KB Output is correct
3 Correct 4 ms 632 KB Output is correct
4 Correct 3 ms 504 KB Output is correct
5 Correct 3 ms 504 KB Output is correct
6 Correct 3 ms 508 KB Output is correct
7 Correct 4 ms 820 KB Output is correct
8 Correct 4 ms 608 KB Output is correct
9 Correct 4 ms 504 KB Output is correct
10 Correct 4 ms 504 KB Output is correct
11 Correct 4 ms 504 KB Output is correct
12 Correct 3 ms 632 KB Output is correct
13 Correct 4 ms 632 KB Output is correct
14 Correct 2 ms 504 KB Output is correct
15 Correct 440 ms 22208 KB Output is correct
16 Correct 544 ms 22648 KB Output is correct
17 Correct 678 ms 23928 KB Output is correct
18 Correct 128 ms 20648 KB Output is correct
19 Correct 321 ms 23072 KB Output is correct
20 Correct 345 ms 23780 KB Output is correct
21 Correct 345 ms 23800 KB Output is correct
22 Correct 481 ms 19192 KB Output is correct
23 Correct 491 ms 24824 KB Output is correct
24 Correct 706 ms 24516 KB Output is correct
25 Correct 756 ms 24012 KB Output is correct
26 Correct 502 ms 23148 KB Output is correct
27 Correct 435 ms 22364 KB Output is correct
28 Correct 673 ms 24312 KB Output is correct
29 Correct 614 ms 23748 KB Output is correct
30 Correct 413 ms 21624 KB Output is correct
31 Correct 625 ms 24248 KB Output is correct
32 Correct 488 ms 23828 KB Output is correct
33 Correct 671 ms 24316 KB Output is correct
34 Correct 607 ms 24400 KB Output is correct
35 Correct 366 ms 22624 KB Output is correct
36 Correct 78 ms 20600 KB Output is correct
37 Correct 599 ms 25052 KB Output is correct
38 Correct 512 ms 24000 KB Output is correct
39 Correct 552 ms 24228 KB Output is correct