#include <bits/stdc++.h>
using namespace std;
const int c=200002;
int lo, hi, mid, st=0, a[c], ia[c], b[c], ib[c], cs1, cs2;
int findSwapPairs(int n, int s[], int m, int x[], int y[], int p[], int q[]) {
lo=-1, hi=n;
while(hi-lo>1) {
mid=(hi+lo)/2, st=0;
for (int i=0; i<n; i++) a[i]=s[i], b[i]=i, ia[s[i]]=i, ib[i]=i, p[i]=0, q[i]=0;
for (int i=mid-1; i>=0; i--) swap(ib[b[x[i]]], ib[b[y[i]]]), swap(b[x[i]], b[y[i]]);
for (int i=0; i<n; i++) {
if (a[i]!=b[i]) {
cs1=i, cs2=ia[b[i]];
p[st]=cs1, q[st]=cs2;
swap(ia[a[cs1]], ia[a[cs2]]), swap(a[cs1], a[cs2]);
cs1=x[st], cs2=y[st];
swap(ia[a[cs1]], ib[b[cs2]]), swap(a[cs1], a[cs2]);
swap(ib[b[cs1]], ib[b[cs2]]), swap(b[cs1], b[cs2]);
st++;
}
}
if (st<=mid) hi=mid;
else lo=mid;
}
return hi;
}
Compilation message
sorting.cpp: In function 'int findSwapPairs(int, int*, int, int*, int*, int*, int*)':
sorting.cpp:6:39: warning: unused parameter 'm' [-Wunused-parameter]
6 | int findSwapPairs(int n, int s[], int m, int x[], int y[], int p[], int q[]) {
| ~~~~^
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
384 KB |
Output is correct |
2 |
Correct |
0 ms |
384 KB |
Output is correct |
3 |
Correct |
0 ms |
384 KB |
Output is correct |
4 |
Correct |
1 ms |
384 KB |
Output is correct |
5 |
Correct |
0 ms |
384 KB |
Output is correct |
6 |
Correct |
0 ms |
384 KB |
Output is correct |
7 |
Correct |
0 ms |
384 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
384 KB |
Output is correct |
2 |
Correct |
0 ms |
384 KB |
Output is correct |
3 |
Correct |
0 ms |
384 KB |
Output is correct |
4 |
Correct |
1 ms |
384 KB |
Output is correct |
5 |
Correct |
0 ms |
384 KB |
Output is correct |
6 |
Correct |
0 ms |
384 KB |
Output is correct |
7 |
Correct |
0 ms |
384 KB |
Output is correct |
8 |
Correct |
1 ms |
384 KB |
Output is correct |
9 |
Correct |
0 ms |
384 KB |
Output is correct |
10 |
Correct |
1 ms |
384 KB |
Output is correct |
11 |
Correct |
1 ms |
384 KB |
Output is correct |
12 |
Correct |
1 ms |
384 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
384 KB |
Output is correct |
2 |
Correct |
0 ms |
384 KB |
Output is correct |
3 |
Incorrect |
1 ms |
384 KB |
Output isn't correct |
4 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
384 KB |
Output is correct |
2 |
Correct |
0 ms |
384 KB |
Output is correct |
3 |
Correct |
0 ms |
384 KB |
Output is correct |
4 |
Correct |
1 ms |
384 KB |
Output is correct |
5 |
Correct |
0 ms |
384 KB |
Output is correct |
6 |
Correct |
0 ms |
384 KB |
Output is correct |
7 |
Correct |
0 ms |
384 KB |
Output is correct |
8 |
Correct |
1 ms |
384 KB |
Output is correct |
9 |
Correct |
0 ms |
384 KB |
Output is correct |
10 |
Correct |
1 ms |
384 KB |
Output is correct |
11 |
Correct |
1 ms |
384 KB |
Output is correct |
12 |
Correct |
1 ms |
384 KB |
Output is correct |
13 |
Correct |
1 ms |
384 KB |
Output is correct |
14 |
Correct |
0 ms |
384 KB |
Output is correct |
15 |
Incorrect |
1 ms |
384 KB |
Output isn't correct |
16 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
2 ms |
512 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
2 ms |
512 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |