#include<bits/stdc++.h>
#include "books.h"
using namespace std;
int n, val=1;
int a[1000005];
int ls, rs;
int le, ri;
stack<int> st;
void dfs(int v)
{
st.push(v);
while(!st.empty())
{
v=st.top();
///used[v]=val;
st.pop();
v=a[v];
if(v<le)
{
for(int i=v; i<le; i++) st.push(i);
le=v;
}
else if(ri<v)
{
for(int i=ri+1; i<=v; i++) st.push(i);
ri=v;
}
}
}
long long minimum_walk(std::vector<int> p, int s)
{
long long ans=0;
n=p.size();
for(int i=0; i<n; i++)
{
a[i]=p[i];
int st=a[i]-i;
if(st<0) ans-=st;
else ans+=st;
}
int le_gr=0, ri_gr=n-1;
while(le_gr<s && a[le_gr]==le_gr) le_gr++;
while(ri_gr>s && a[ri_gr]==ri_gr) ri_gr--;
ls=0, rs=0;
le=s, ri=s;
int obsht=0;
dfs(s);
while(le>le_gr || ri<ri_gr)
{
if(le==le_gr)
{
rs++;
ri++;
dfs(ri);
}
else if(ri==ri_gr)
{
le--;
ls++;
dfs(le);
}
else
{
int tle=le, tri=ri;
if(ls<rs)
{
le--;
ls++;
dfs(le);
if(tri!=ri)
{
obsht=ls;
rs=ls;
}
}
else
{
ri++;
rs++;
dfs(ri);
if(tle!=le)
{
obsht=rs;
ls=rs;
}
}
}
}
return ans+2*(ls+rs-obsht);
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
212 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
0 ms |
212 KB |
Output is correct |
| 4 |
Correct |
0 ms |
212 KB |
Output is correct |
| 5 |
Correct |
0 ms |
212 KB |
Output is correct |
| 6 |
Correct |
0 ms |
212 KB |
Output is correct |
| 7 |
Correct |
0 ms |
212 KB |
Output is correct |
| 8 |
Correct |
0 ms |
212 KB |
Output is correct |
| 9 |
Correct |
1 ms |
212 KB |
Output is correct |
| 10 |
Correct |
0 ms |
308 KB |
Output is correct |
| 11 |
Correct |
0 ms |
212 KB |
Output is correct |
| 12 |
Correct |
1 ms |
212 KB |
Output is correct |
| 13 |
Correct |
0 ms |
308 KB |
Output is correct |
| 14 |
Correct |
1 ms |
212 KB |
Output is correct |
| 15 |
Correct |
0 ms |
212 KB |
Output is correct |
| 16 |
Correct |
1 ms |
212 KB |
Output is correct |
| 17 |
Correct |
0 ms |
312 KB |
Output is correct |
| 18 |
Correct |
0 ms |
212 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
212 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
0 ms |
212 KB |
Output is correct |
| 4 |
Correct |
0 ms |
212 KB |
Output is correct |
| 5 |
Correct |
0 ms |
212 KB |
Output is correct |
| 6 |
Correct |
0 ms |
212 KB |
Output is correct |
| 7 |
Correct |
0 ms |
212 KB |
Output is correct |
| 8 |
Correct |
0 ms |
212 KB |
Output is correct |
| 9 |
Correct |
1 ms |
212 KB |
Output is correct |
| 10 |
Correct |
0 ms |
308 KB |
Output is correct |
| 11 |
Correct |
0 ms |
212 KB |
Output is correct |
| 12 |
Correct |
1 ms |
212 KB |
Output is correct |
| 13 |
Correct |
0 ms |
308 KB |
Output is correct |
| 14 |
Correct |
1 ms |
212 KB |
Output is correct |
| 15 |
Correct |
0 ms |
212 KB |
Output is correct |
| 16 |
Correct |
1 ms |
212 KB |
Output is correct |
| 17 |
Correct |
0 ms |
312 KB |
Output is correct |
| 18 |
Correct |
0 ms |
212 KB |
Output is correct |
| 19 |
Correct |
1 ms |
212 KB |
Output is correct |
| 20 |
Correct |
0 ms |
212 KB |
Output is correct |
| 21 |
Correct |
0 ms |
212 KB |
Output is correct |
| 22 |
Correct |
1 ms |
212 KB |
Output is correct |
| 23 |
Correct |
0 ms |
316 KB |
Output is correct |
| 24 |
Correct |
1 ms |
212 KB |
Output is correct |
| 25 |
Correct |
0 ms |
212 KB |
Output is correct |
| 26 |
Correct |
1 ms |
212 KB |
Output is correct |
| 27 |
Correct |
0 ms |
212 KB |
Output is correct |
| 28 |
Correct |
1 ms |
212 KB |
Output is correct |
| 29 |
Correct |
0 ms |
212 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
212 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
0 ms |
212 KB |
Output is correct |
| 4 |
Correct |
0 ms |
212 KB |
Output is correct |
| 5 |
Correct |
0 ms |
212 KB |
Output is correct |
| 6 |
Correct |
0 ms |
212 KB |
Output is correct |
| 7 |
Correct |
0 ms |
212 KB |
Output is correct |
| 8 |
Correct |
0 ms |
212 KB |
Output is correct |
| 9 |
Correct |
1 ms |
212 KB |
Output is correct |
| 10 |
Correct |
0 ms |
308 KB |
Output is correct |
| 11 |
Correct |
0 ms |
212 KB |
Output is correct |
| 12 |
Correct |
1 ms |
212 KB |
Output is correct |
| 13 |
Correct |
0 ms |
308 KB |
Output is correct |
| 14 |
Correct |
1 ms |
212 KB |
Output is correct |
| 15 |
Correct |
0 ms |
212 KB |
Output is correct |
| 16 |
Correct |
1 ms |
212 KB |
Output is correct |
| 17 |
Correct |
0 ms |
312 KB |
Output is correct |
| 18 |
Correct |
0 ms |
212 KB |
Output is correct |
| 19 |
Correct |
1 ms |
212 KB |
Output is correct |
| 20 |
Correct |
0 ms |
212 KB |
Output is correct |
| 21 |
Correct |
0 ms |
212 KB |
Output is correct |
| 22 |
Correct |
1 ms |
212 KB |
Output is correct |
| 23 |
Correct |
0 ms |
316 KB |
Output is correct |
| 24 |
Correct |
1 ms |
212 KB |
Output is correct |
| 25 |
Correct |
0 ms |
212 KB |
Output is correct |
| 26 |
Correct |
1 ms |
212 KB |
Output is correct |
| 27 |
Correct |
0 ms |
212 KB |
Output is correct |
| 28 |
Correct |
1 ms |
212 KB |
Output is correct |
| 29 |
Correct |
0 ms |
212 KB |
Output is correct |
| 30 |
Correct |
86 ms |
22772 KB |
Output is correct |
| 31 |
Correct |
84 ms |
22848 KB |
Output is correct |
| 32 |
Correct |
76 ms |
18676 KB |
Output is correct |
| 33 |
Correct |
82 ms |
18664 KB |
Output is correct |
| 34 |
Correct |
82 ms |
18764 KB |
Output is correct |
| 35 |
Correct |
83 ms |
18636 KB |
Output is correct |
| 36 |
Correct |
84 ms |
18676 KB |
Output is correct |
| 37 |
Correct |
88 ms |
18656 KB |
Output is correct |
| 38 |
Correct |
78 ms |
18664 KB |
Output is correct |
| 39 |
Correct |
77 ms |
18796 KB |
Output is correct |
| 40 |
Correct |
78 ms |
18916 KB |
Output is correct |
| 41 |
Correct |
79 ms |
20796 KB |
Output is correct |
| 42 |
Correct |
79 ms |
20332 KB |
Output is correct |
| 43 |
Correct |
79 ms |
22756 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
308 KB |
Output is correct |
| 2 |
Correct |
0 ms |
316 KB |
Output is correct |
| 3 |
Correct |
1 ms |
212 KB |
Output is correct |
| 4 |
Correct |
1 ms |
212 KB |
Output is correct |
| 5 |
Correct |
1 ms |
212 KB |
Output is correct |
| 6 |
Correct |
0 ms |
316 KB |
Output is correct |
| 7 |
Correct |
1 ms |
212 KB |
Output is correct |
| 8 |
Correct |
1 ms |
212 KB |
Output is correct |
| 9 |
Correct |
1 ms |
212 KB |
Output is correct |
| 10 |
Correct |
1 ms |
212 KB |
Output is correct |
| 11 |
Correct |
0 ms |
312 KB |
Output is correct |
| 12 |
Correct |
0 ms |
212 KB |
Output is correct |
| 13 |
Correct |
0 ms |
212 KB |
Output is correct |
| 14 |
Correct |
0 ms |
212 KB |
Output is correct |
| 15 |
Correct |
0 ms |
212 KB |
Output is correct |
| 16 |
Correct |
1 ms |
212 KB |
Output is correct |
| 17 |
Correct |
0 ms |
212 KB |
Output is correct |
| 18 |
Correct |
1 ms |
212 KB |
Output is correct |
| 19 |
Correct |
1 ms |
308 KB |
Output is correct |
| 20 |
Correct |
0 ms |
212 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
212 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
0 ms |
212 KB |
Output is correct |
| 4 |
Correct |
0 ms |
212 KB |
Output is correct |
| 5 |
Correct |
0 ms |
212 KB |
Output is correct |
| 6 |
Correct |
0 ms |
212 KB |
Output is correct |
| 7 |
Correct |
0 ms |
212 KB |
Output is correct |
| 8 |
Correct |
0 ms |
212 KB |
Output is correct |
| 9 |
Correct |
1 ms |
212 KB |
Output is correct |
| 10 |
Correct |
0 ms |
308 KB |
Output is correct |
| 11 |
Correct |
0 ms |
212 KB |
Output is correct |
| 12 |
Correct |
1 ms |
212 KB |
Output is correct |
| 13 |
Correct |
0 ms |
308 KB |
Output is correct |
| 14 |
Correct |
1 ms |
212 KB |
Output is correct |
| 15 |
Correct |
0 ms |
212 KB |
Output is correct |
| 16 |
Correct |
1 ms |
212 KB |
Output is correct |
| 17 |
Correct |
0 ms |
312 KB |
Output is correct |
| 18 |
Correct |
0 ms |
212 KB |
Output is correct |
| 19 |
Correct |
1 ms |
212 KB |
Output is correct |
| 20 |
Correct |
0 ms |
212 KB |
Output is correct |
| 21 |
Correct |
0 ms |
212 KB |
Output is correct |
| 22 |
Correct |
1 ms |
212 KB |
Output is correct |
| 23 |
Correct |
0 ms |
316 KB |
Output is correct |
| 24 |
Correct |
1 ms |
212 KB |
Output is correct |
| 25 |
Correct |
0 ms |
212 KB |
Output is correct |
| 26 |
Correct |
1 ms |
212 KB |
Output is correct |
| 27 |
Correct |
0 ms |
212 KB |
Output is correct |
| 28 |
Correct |
1 ms |
212 KB |
Output is correct |
| 29 |
Correct |
0 ms |
212 KB |
Output is correct |
| 30 |
Correct |
86 ms |
22772 KB |
Output is correct |
| 31 |
Correct |
84 ms |
22848 KB |
Output is correct |
| 32 |
Correct |
76 ms |
18676 KB |
Output is correct |
| 33 |
Correct |
82 ms |
18664 KB |
Output is correct |
| 34 |
Correct |
82 ms |
18764 KB |
Output is correct |
| 35 |
Correct |
83 ms |
18636 KB |
Output is correct |
| 36 |
Correct |
84 ms |
18676 KB |
Output is correct |
| 37 |
Correct |
88 ms |
18656 KB |
Output is correct |
| 38 |
Correct |
78 ms |
18664 KB |
Output is correct |
| 39 |
Correct |
77 ms |
18796 KB |
Output is correct |
| 40 |
Correct |
78 ms |
18916 KB |
Output is correct |
| 41 |
Correct |
79 ms |
20796 KB |
Output is correct |
| 42 |
Correct |
79 ms |
20332 KB |
Output is correct |
| 43 |
Correct |
79 ms |
22756 KB |
Output is correct |
| 44 |
Correct |
0 ms |
308 KB |
Output is correct |
| 45 |
Correct |
0 ms |
316 KB |
Output is correct |
| 46 |
Correct |
1 ms |
212 KB |
Output is correct |
| 47 |
Correct |
1 ms |
212 KB |
Output is correct |
| 48 |
Correct |
1 ms |
212 KB |
Output is correct |
| 49 |
Correct |
0 ms |
316 KB |
Output is correct |
| 50 |
Correct |
1 ms |
212 KB |
Output is correct |
| 51 |
Correct |
1 ms |
212 KB |
Output is correct |
| 52 |
Correct |
1 ms |
212 KB |
Output is correct |
| 53 |
Correct |
1 ms |
212 KB |
Output is correct |
| 54 |
Correct |
0 ms |
312 KB |
Output is correct |
| 55 |
Correct |
0 ms |
212 KB |
Output is correct |
| 56 |
Correct |
0 ms |
212 KB |
Output is correct |
| 57 |
Correct |
0 ms |
212 KB |
Output is correct |
| 58 |
Correct |
0 ms |
212 KB |
Output is correct |
| 59 |
Correct |
1 ms |
212 KB |
Output is correct |
| 60 |
Correct |
0 ms |
212 KB |
Output is correct |
| 61 |
Correct |
1 ms |
212 KB |
Output is correct |
| 62 |
Correct |
1 ms |
308 KB |
Output is correct |
| 63 |
Correct |
0 ms |
212 KB |
Output is correct |
| 64 |
Correct |
81 ms |
22388 KB |
Output is correct |
| 65 |
Correct |
79 ms |
21620 KB |
Output is correct |
| 66 |
Correct |
78 ms |
19056 KB |
Output is correct |
| 67 |
Correct |
78 ms |
20072 KB |
Output is correct |
| 68 |
Correct |
8 ms |
2372 KB |
Output is correct |
| 69 |
Correct |
8 ms |
2132 KB |
Output is correct |
| 70 |
Correct |
8 ms |
2364 KB |
Output is correct |
| 71 |
Correct |
8 ms |
2368 KB |
Output is correct |
| 72 |
Correct |
8 ms |
2004 KB |
Output is correct |
| 73 |
Correct |
8 ms |
2228 KB |
Output is correct |
| 74 |
Correct |
81 ms |
18676 KB |
Output is correct |
| 75 |
Correct |
83 ms |
18660 KB |
Output is correct |
| 76 |
Correct |
80 ms |
22636 KB |
Output is correct |
| 77 |
Correct |
91 ms |
22696 KB |
Output is correct |
| 78 |
Correct |
85 ms |
19948 KB |
Output is correct |
| 79 |
Correct |
77 ms |
19696 KB |
Output is correct |
| 80 |
Correct |
74 ms |
18664 KB |
Output is correct |
| 81 |
Correct |
78 ms |
19044 KB |
Output is correct |
| 82 |
Correct |
77 ms |
18920 KB |
Output is correct |
| 83 |
Correct |
80 ms |
18660 KB |
Output is correct |
| 84 |
Correct |
80 ms |
18668 KB |
Output is correct |
| 85 |
Correct |
84 ms |
18760 KB |
Output is correct |
| 86 |
Correct |
77 ms |
18676 KB |
Output is correct |
| 87 |
Correct |
82 ms |
18664 KB |
Output is correct |
| 88 |
Correct |
82 ms |
18672 KB |
Output is correct |
| 89 |
Correct |
86 ms |
18664 KB |
Output is correct |
| 90 |
Correct |
78 ms |
18764 KB |
Output is correct |
| 91 |
Correct |
77 ms |
18668 KB |
Output is correct |
| 92 |
Correct |
78 ms |
18920 KB |
Output is correct |
