#include "sorting.h"
#include <bits/stdc++.h>
using namespace std;
int a[200010], pos[200010];
int findSwapPairs(int N, int S[], int M, int X[], int Y[], int P[], int Q[]) {
iota(a, a+N, 0);
for (int i=0; i<N; ++i) pos[S[i]]=i;
for (int i=M-1; i>=0; --i) swap(a[X[i]], a[Y[i]]);
if (is_sorted(S, S+N)) return 0;
for (int i=0; i<M; ++i){
P[i]=Q[i]=0;
swap(a[X[i]], a[Y[i]]);
if (is_sorted(S, S+N)) return i+1;
swap(S[X[i]], S[Y[i]]);
pos[S[X[i]]]=X[i];
pos[S[Y[i]]]=Y[i];
for (int j=0; j<N; ++j) if (a[j]!=S[j]){
int k=pos[a[j]];
P[i]=j, Q[i]=k;
break;
}
swap(S[P[i]], S[Q[i]]);
pos[S[P[i]]]=P[i];
pos[S[Q[i]]]=Q[i];
if (is_sorted(S, S+N)) return i+1;
}
return M;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
1 ms |
344 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
1 ms |
344 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
1 ms |
432 KB |
Output is correct |
10 |
Correct |
0 ms |
344 KB |
Output is correct |
11 |
Correct |
1 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
1 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
1 ms |
344 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
1 ms |
432 KB |
Output is correct |
10 |
Correct |
0 ms |
344 KB |
Output is correct |
11 |
Correct |
1 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
344 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
0 ms |
348 KB |
Output is correct |
17 |
Correct |
1 ms |
348 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
1 ms |
344 KB |
Output is correct |
20 |
Correct |
1 ms |
348 KB |
Output is correct |
21 |
Correct |
5 ms |
728 KB |
Output is correct |
22 |
Correct |
4 ms |
604 KB |
Output is correct |
23 |
Correct |
5 ms |
604 KB |
Output is correct |
24 |
Correct |
5 ms |
600 KB |
Output is correct |
25 |
Correct |
5 ms |
604 KB |
Output is correct |
26 |
Correct |
5 ms |
600 KB |
Output is correct |
27 |
Correct |
5 ms |
604 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
4 ms |
548 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
4 ms |
548 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |