#include "books.h"
#include <bits/stdc++.h>
using namespace std;
const int inf = 1e9;
static int C[1000005];
static int L[1000000];
static int R[1000000];
void extend(int &l, int &r){
int LBound = min(L[C[l]], L[C[r]]);
int RBound = max(R[C[l]], R[C[r]]);
while(true){
if(l > LBound){
l--;
LBound = min(L[C[l]], LBound);
RBound = max(R[C[l]], RBound);
}
else if(r < RBound){
r++;
LBound = min(L[C[r]], LBound);
RBound = max(R[C[r]], RBound);
}
else break;
}
}
long long minimum_walk(vector<int> p, int S){
int n = p.size();
int leftMost = S, rightMost = S;
long long ans = 0;
int cnt = 1;
for(int i = 0;i < n;i++){
if(C[i] != 0) continue;
int x = i;
L[cnt] = i;
while(true){
C[x] = cnt;
R[cnt] = max(R[cnt], x);
ans += abs(x - p[x]); ///essential moves
x = p[x];
if(x == i) break;
}
if(i != p[i]){
leftMost = min(L[cnt], leftMost);
rightMost = max(R[cnt], rightMost);
}
cnt++;
}
int l = S, r = S;
while(true){
if(l == leftMost && r == rightMost) break;
extend(l,r);
bool hasExtension = false;
int newL = n, newR = 0;
///try to go left first
int LCost = 0;
int ll = l, rr = r; ///temporary, try first
while(true){
if(ll <= leftMost) break;
ll--; LCost += 2;
extend(ll, rr);
if(rr > r){
hasExtension = true;
break;
}
}
newL = min(ll, newL);
newR = max(rr, newR);
///then try to go right
int RCost = 0;
ll = l, rr = r; ///temporary, try first
while(true){
if(rr >= rightMost) break;
rr++; RCost += 2;
extend(ll, rr);
if(ll < l){
hasExtension = true;
break;
}
}
newL = min(ll, newL);
newR = max(rr, newR);
if(hasExtension) ans += min(LCost, RCost);
else ans += LCost + RCost;
l = newL; r = newR;
if(l == leftMost && r == rightMost) break;
}
return ans;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
384 KB |
Output is correct |
| 2 |
Correct |
4 ms |
384 KB |
Output is correct |
| 3 |
Correct |
5 ms |
384 KB |
Output is correct |
| 4 |
Correct |
4 ms |
256 KB |
Output is correct |
| 5 |
Correct |
5 ms |
384 KB |
Output is correct |
| 6 |
Correct |
5 ms |
384 KB |
Output is correct |
| 7 |
Correct |
4 ms |
384 KB |
Output is correct |
| 8 |
Correct |
5 ms |
384 KB |
Output is correct |
| 9 |
Correct |
5 ms |
384 KB |
Output is correct |
| 10 |
Correct |
5 ms |
384 KB |
Output is correct |
| 11 |
Correct |
5 ms |
384 KB |
Output is correct |
| 12 |
Correct |
4 ms |
384 KB |
Output is correct |
| 13 |
Correct |
4 ms |
384 KB |
Output is correct |
| 14 |
Correct |
5 ms |
384 KB |
Output is correct |
| 15 |
Correct |
4 ms |
384 KB |
Output is correct |
| 16 |
Correct |
5 ms |
384 KB |
Output is correct |
| 17 |
Correct |
5 ms |
384 KB |
Output is correct |
| 18 |
Correct |
5 ms |
384 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
384 KB |
Output is correct |
| 2 |
Correct |
4 ms |
384 KB |
Output is correct |
| 3 |
Correct |
5 ms |
384 KB |
Output is correct |
| 4 |
Correct |
4 ms |
256 KB |
Output is correct |
| 5 |
Correct |
5 ms |
384 KB |
Output is correct |
| 6 |
Correct |
5 ms |
384 KB |
Output is correct |
| 7 |
Correct |
4 ms |
384 KB |
Output is correct |
| 8 |
Correct |
5 ms |
384 KB |
Output is correct |
| 9 |
Correct |
5 ms |
384 KB |
Output is correct |
| 10 |
Correct |
5 ms |
384 KB |
Output is correct |
| 11 |
Correct |
5 ms |
384 KB |
Output is correct |
| 12 |
Correct |
4 ms |
384 KB |
Output is correct |
| 13 |
Correct |
4 ms |
384 KB |
Output is correct |
| 14 |
Correct |
5 ms |
384 KB |
Output is correct |
| 15 |
Correct |
4 ms |
384 KB |
Output is correct |
| 16 |
Correct |
5 ms |
384 KB |
Output is correct |
| 17 |
Correct |
5 ms |
384 KB |
Output is correct |
| 18 |
Correct |
5 ms |
384 KB |
Output is correct |
| 19 |
Correct |
5 ms |
384 KB |
Output is correct |
| 20 |
Correct |
5 ms |
384 KB |
Output is correct |
| 21 |
Correct |
5 ms |
384 KB |
Output is correct |
| 22 |
Correct |
5 ms |
384 KB |
Output is correct |
| 23 |
Correct |
5 ms |
384 KB |
Output is correct |
| 24 |
Correct |
5 ms |
384 KB |
Output is correct |
| 25 |
Correct |
5 ms |
384 KB |
Output is correct |
| 26 |
Correct |
5 ms |
384 KB |
Output is correct |
| 27 |
Correct |
5 ms |
384 KB |
Output is correct |
| 28 |
Correct |
5 ms |
384 KB |
Output is correct |
| 29 |
Correct |
5 ms |
384 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
384 KB |
Output is correct |
| 2 |
Correct |
4 ms |
384 KB |
Output is correct |
| 3 |
Correct |
5 ms |
384 KB |
Output is correct |
| 4 |
Correct |
4 ms |
256 KB |
Output is correct |
| 5 |
Correct |
5 ms |
384 KB |
Output is correct |
| 6 |
Correct |
5 ms |
384 KB |
Output is correct |
| 7 |
Correct |
4 ms |
384 KB |
Output is correct |
| 8 |
Correct |
5 ms |
384 KB |
Output is correct |
| 9 |
Correct |
5 ms |
384 KB |
Output is correct |
| 10 |
Correct |
5 ms |
384 KB |
Output is correct |
| 11 |
Correct |
5 ms |
384 KB |
Output is correct |
| 12 |
Correct |
4 ms |
384 KB |
Output is correct |
| 13 |
Correct |
4 ms |
384 KB |
Output is correct |
| 14 |
Correct |
5 ms |
384 KB |
Output is correct |
| 15 |
Correct |
4 ms |
384 KB |
Output is correct |
| 16 |
Correct |
5 ms |
384 KB |
Output is correct |
| 17 |
Correct |
5 ms |
384 KB |
Output is correct |
| 18 |
Correct |
5 ms |
384 KB |
Output is correct |
| 19 |
Correct |
5 ms |
384 KB |
Output is correct |
| 20 |
Correct |
5 ms |
384 KB |
Output is correct |
| 21 |
Correct |
5 ms |
384 KB |
Output is correct |
| 22 |
Correct |
5 ms |
384 KB |
Output is correct |
| 23 |
Correct |
5 ms |
384 KB |
Output is correct |
| 24 |
Correct |
5 ms |
384 KB |
Output is correct |
| 25 |
Correct |
5 ms |
384 KB |
Output is correct |
| 26 |
Correct |
5 ms |
384 KB |
Output is correct |
| 27 |
Correct |
5 ms |
384 KB |
Output is correct |
| 28 |
Correct |
5 ms |
384 KB |
Output is correct |
| 29 |
Correct |
5 ms |
384 KB |
Output is correct |
| 30 |
Correct |
228 ms |
19196 KB |
Output is correct |
| 31 |
Correct |
228 ms |
18808 KB |
Output is correct |
| 32 |
Correct |
163 ms |
26616 KB |
Output is correct |
| 33 |
Correct |
180 ms |
24440 KB |
Output is correct |
| 34 |
Correct |
174 ms |
24328 KB |
Output is correct |
| 35 |
Correct |
181 ms |
23160 KB |
Output is correct |
| 36 |
Correct |
170 ms |
20856 KB |
Output is correct |
| 37 |
Correct |
168 ms |
19208 KB |
Output is correct |
| 38 |
Correct |
177 ms |
18808 KB |
Output is correct |
| 39 |
Correct |
174 ms |
18808 KB |
Output is correct |
| 40 |
Correct |
190 ms |
18936 KB |
Output is correct |
| 41 |
Correct |
195 ms |
18936 KB |
Output is correct |
| 42 |
Correct |
190 ms |
18808 KB |
Output is correct |
| 43 |
Correct |
178 ms |
24840 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
512 KB |
Output is correct |
| 2 |
Correct |
5 ms |
384 KB |
Output is correct |
| 3 |
Correct |
5 ms |
384 KB |
Output is correct |
| 4 |
Correct |
5 ms |
384 KB |
Output is correct |
| 5 |
Correct |
5 ms |
384 KB |
Output is correct |
| 6 |
Correct |
5 ms |
384 KB |
Output is correct |
| 7 |
Correct |
5 ms |
384 KB |
Output is correct |
| 8 |
Correct |
5 ms |
384 KB |
Output is correct |
| 9 |
Correct |
5 ms |
384 KB |
Output is correct |
| 10 |
Correct |
5 ms |
384 KB |
Output is correct |
| 11 |
Correct |
5 ms |
384 KB |
Output is correct |
| 12 |
Correct |
5 ms |
384 KB |
Output is correct |
| 13 |
Correct |
5 ms |
384 KB |
Output is correct |
| 14 |
Correct |
5 ms |
384 KB |
Output is correct |
| 15 |
Correct |
5 ms |
384 KB |
Output is correct |
| 16 |
Correct |
5 ms |
384 KB |
Output is correct |
| 17 |
Correct |
5 ms |
384 KB |
Output is correct |
| 18 |
Correct |
5 ms |
384 KB |
Output is correct |
| 19 |
Correct |
5 ms |
384 KB |
Output is correct |
| 20 |
Correct |
5 ms |
384 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
384 KB |
Output is correct |
| 2 |
Correct |
4 ms |
384 KB |
Output is correct |
| 3 |
Correct |
5 ms |
384 KB |
Output is correct |
| 4 |
Correct |
4 ms |
256 KB |
Output is correct |
| 5 |
Correct |
5 ms |
384 KB |
Output is correct |
| 6 |
Correct |
5 ms |
384 KB |
Output is correct |
| 7 |
Correct |
4 ms |
384 KB |
Output is correct |
| 8 |
Correct |
5 ms |
384 KB |
Output is correct |
| 9 |
Correct |
5 ms |
384 KB |
Output is correct |
| 10 |
Correct |
5 ms |
384 KB |
Output is correct |
| 11 |
Correct |
5 ms |
384 KB |
Output is correct |
| 12 |
Correct |
4 ms |
384 KB |
Output is correct |
| 13 |
Correct |
4 ms |
384 KB |
Output is correct |
| 14 |
Correct |
5 ms |
384 KB |
Output is correct |
| 15 |
Correct |
4 ms |
384 KB |
Output is correct |
| 16 |
Correct |
5 ms |
384 KB |
Output is correct |
| 17 |
Correct |
5 ms |
384 KB |
Output is correct |
| 18 |
Correct |
5 ms |
384 KB |
Output is correct |
| 19 |
Correct |
5 ms |
384 KB |
Output is correct |
| 20 |
Correct |
5 ms |
384 KB |
Output is correct |
| 21 |
Correct |
5 ms |
384 KB |
Output is correct |
| 22 |
Correct |
5 ms |
384 KB |
Output is correct |
| 23 |
Correct |
5 ms |
384 KB |
Output is correct |
| 24 |
Correct |
5 ms |
384 KB |
Output is correct |
| 25 |
Correct |
5 ms |
384 KB |
Output is correct |
| 26 |
Correct |
5 ms |
384 KB |
Output is correct |
| 27 |
Correct |
5 ms |
384 KB |
Output is correct |
| 28 |
Correct |
5 ms |
384 KB |
Output is correct |
| 29 |
Correct |
5 ms |
384 KB |
Output is correct |
| 30 |
Correct |
228 ms |
19196 KB |
Output is correct |
| 31 |
Correct |
228 ms |
18808 KB |
Output is correct |
| 32 |
Correct |
163 ms |
26616 KB |
Output is correct |
| 33 |
Correct |
180 ms |
24440 KB |
Output is correct |
| 34 |
Correct |
174 ms |
24328 KB |
Output is correct |
| 35 |
Correct |
181 ms |
23160 KB |
Output is correct |
| 36 |
Correct |
170 ms |
20856 KB |
Output is correct |
| 37 |
Correct |
168 ms |
19208 KB |
Output is correct |
| 38 |
Correct |
177 ms |
18808 KB |
Output is correct |
| 39 |
Correct |
174 ms |
18808 KB |
Output is correct |
| 40 |
Correct |
190 ms |
18936 KB |
Output is correct |
| 41 |
Correct |
195 ms |
18936 KB |
Output is correct |
| 42 |
Correct |
190 ms |
18808 KB |
Output is correct |
| 43 |
Correct |
178 ms |
24840 KB |
Output is correct |
| 44 |
Correct |
5 ms |
512 KB |
Output is correct |
| 45 |
Correct |
5 ms |
384 KB |
Output is correct |
| 46 |
Correct |
5 ms |
384 KB |
Output is correct |
| 47 |
Correct |
5 ms |
384 KB |
Output is correct |
| 48 |
Correct |
5 ms |
384 KB |
Output is correct |
| 49 |
Correct |
5 ms |
384 KB |
Output is correct |
| 50 |
Correct |
5 ms |
384 KB |
Output is correct |
| 51 |
Correct |
5 ms |
384 KB |
Output is correct |
| 52 |
Correct |
5 ms |
384 KB |
Output is correct |
| 53 |
Correct |
5 ms |
384 KB |
Output is correct |
| 54 |
Correct |
5 ms |
384 KB |
Output is correct |
| 55 |
Correct |
5 ms |
384 KB |
Output is correct |
| 56 |
Correct |
5 ms |
384 KB |
Output is correct |
| 57 |
Correct |
5 ms |
384 KB |
Output is correct |
| 58 |
Correct |
5 ms |
384 KB |
Output is correct |
| 59 |
Correct |
5 ms |
384 KB |
Output is correct |
| 60 |
Correct |
5 ms |
384 KB |
Output is correct |
| 61 |
Correct |
5 ms |
384 KB |
Output is correct |
| 62 |
Correct |
5 ms |
384 KB |
Output is correct |
| 63 |
Correct |
5 ms |
384 KB |
Output is correct |
| 64 |
Correct |
168 ms |
24568 KB |
Output is correct |
| 65 |
Correct |
166 ms |
25080 KB |
Output is correct |
| 66 |
Correct |
180 ms |
19064 KB |
Output is correct |
| 67 |
Correct |
180 ms |
18936 KB |
Output is correct |
| 68 |
Correct |
20 ms |
2304 KB |
Output is correct |
| 69 |
Correct |
20 ms |
2176 KB |
Output is correct |
| 70 |
Correct |
21 ms |
2432 KB |
Output is correct |
| 71 |
Correct |
20 ms |
2652 KB |
Output is correct |
| 72 |
Correct |
20 ms |
2816 KB |
Output is correct |
| 73 |
Correct |
29 ms |
2048 KB |
Output is correct |
| 74 |
Correct |
172 ms |
24312 KB |
Output is correct |
| 75 |
Correct |
172 ms |
24312 KB |
Output is correct |
| 76 |
Correct |
172 ms |
24568 KB |
Output is correct |
| 77 |
Correct |
170 ms |
24644 KB |
Output is correct |
| 78 |
Correct |
178 ms |
23800 KB |
Output is correct |
| 79 |
Correct |
171 ms |
23784 KB |
Output is correct |
| 80 |
Correct |
161 ms |
26744 KB |
Output is correct |
| 81 |
Correct |
178 ms |
22776 KB |
Output is correct |
| 82 |
Correct |
173 ms |
22780 KB |
Output is correct |
| 83 |
Correct |
180 ms |
21828 KB |
Output is correct |
| 84 |
Correct |
172 ms |
21240 KB |
Output is correct |
| 85 |
Correct |
176 ms |
19960 KB |
Output is correct |
| 86 |
Correct |
169 ms |
19320 KB |
Output is correct |
| 87 |
Correct |
190 ms |
25464 KB |
Output is correct |
| 88 |
Correct |
181 ms |
24312 KB |
Output is correct |
| 89 |
Correct |
177 ms |
22468 KB |
Output is correct |
| 90 |
Correct |
166 ms |
18940 KB |
Output is correct |
| 91 |
Correct |
177 ms |
18808 KB |
Output is correct |
| 92 |
Correct |
178 ms |
18812 KB |
Output is correct |
