#include "books.h"
#include <cstdlib>
#include <queue>
#include <utility>
const int MAXN = 1e6;
int belongsTo[MAXN];
std::pair<int, int> cycInter[MAXN];
std::queue<std::pair<int, int>> toCheck;
void processcycle(int cycle, int &left, int &right)
{
if (cycInter[cycle].first < left)
{
toCheck.emplace(cycInter[cycle].first, left);
left = cycInter[cycle].first;
}
if (cycInter[cycle].second > right)
{
toCheck.emplace(right, cycInter[cycle].second);
right = cycInter[cycle].second;
}
}
std::pair<int, int> check(int doneLeft, int doneRight)
{
int left = doneLeft, right = doneRight;
while (!toCheck.empty())
{
std::pair<int, int> checkingInter = toCheck.front();
toCheck.pop();
for (int iTable = checkingInter.first; iTable < checkingInter.second; iTable++)
processcycle(belongsTo[iTable], left, right);
}
return { left, right };
}
long long minimum_walk(std::vector<int> p, int s)
{
int tables = p.size();
std::fill_n(belongsTo, tables, -1);
long long minWalk = 0;
int cycles = 0;
for (int iTable = 0; iTable < tables; iTable++)
if (belongsTo[iTable] == -1)
{
int leftMost = tables, rightMost = 0;
int curTable = iTable;
while (belongsTo[curTable] == -1)
{
leftMost = std::min(leftMost, curTable);
rightMost = std::max(rightMost, curTable);
belongsTo[curTable] = cycles;
minWalk += (long long)std::abs(curTable - p[curTable]);
curTable = p[curTable];
}
cycInter[cycles] = { leftMost, rightMost + 1 };
cycles++;
}
int endLeft = 0, endRight = tables;
while (endLeft < s && cycInter[belongsTo[endLeft]].second - cycInter[belongsTo[endLeft]].first == 1)
endLeft++;
while (endRight - 1 > s && cycInter[belongsTo[endRight - 1]].second - cycInter[belongsTo[endRight - 1]].first == 1)
endRight--;
toCheck.emplace(s, s + 1);
std::pair<int, int> done = check(s, s + 1);
while (done.first != endLeft || done.second != endRight)
{
long long costLeft = 0;
std::pair<int, int> moveLeft = done;
while (moveLeft.first != endLeft && moveLeft.second == done.second)
{
toCheck.emplace(moveLeft.first - 1, moveLeft.first);
costLeft += 2;
moveLeft = check(moveLeft.first - 1, moveLeft.second);
}
long long costRight = 0;
std::pair<int, int> moveRight = done;
while (moveRight.first == done.first && moveRight.second != endRight)
{
toCheck.emplace(moveRight.second, moveRight.second + 1);
costRight += 2;
moveRight = check(moveRight.first, moveRight.second + 1);
}
if (moveLeft == moveRight)
{
minWalk += std::min(costLeft, costRight);
done = moveLeft;
}
else
{
minWalk += costLeft + costRight;
done = { moveLeft.first, moveRight.second };
}
}
return minWalk;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
2 ms |
256 KB |
Output is correct |
4 |
Correct |
2 ms |
376 KB |
Output is correct |
5 |
Correct |
2 ms |
256 KB |
Output is correct |
6 |
Correct |
2 ms |
376 KB |
Output is correct |
7 |
Correct |
2 ms |
256 KB |
Output is correct |
8 |
Correct |
2 ms |
256 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 |
256 KB |
Output is correct |
12 |
Correct |
2 ms |
376 KB |
Output is correct |
13 |
Correct |
2 ms |
256 KB |
Output is correct |
14 |
Correct |
2 ms |
256 KB |
Output is correct |
15 |
Correct |
2 ms |
376 KB |
Output is correct |
16 |
Correct |
2 ms |
256 KB |
Output is correct |
17 |
Correct |
2 ms |
256 KB |
Output is correct |
18 |
Correct |
2 ms |
256 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
2 ms |
256 KB |
Output is correct |
4 |
Correct |
2 ms |
376 KB |
Output is correct |
5 |
Correct |
2 ms |
256 KB |
Output is correct |
6 |
Correct |
2 ms |
376 KB |
Output is correct |
7 |
Correct |
2 ms |
256 KB |
Output is correct |
8 |
Correct |
2 ms |
256 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 |
256 KB |
Output is correct |
12 |
Correct |
2 ms |
376 KB |
Output is correct |
13 |
Correct |
2 ms |
256 KB |
Output is correct |
14 |
Correct |
2 ms |
256 KB |
Output is correct |
15 |
Correct |
2 ms |
376 KB |
Output is correct |
16 |
Correct |
2 ms |
256 KB |
Output is correct |
17 |
Correct |
2 ms |
256 KB |
Output is correct |
18 |
Correct |
2 ms |
256 KB |
Output is correct |
19 |
Correct |
2 ms |
376 KB |
Output is correct |
20 |
Correct |
2 ms |
376 KB |
Output is correct |
21 |
Correct |
2 ms |
256 KB |
Output is correct |
22 |
Correct |
2 ms |
376 KB |
Output is correct |
23 |
Correct |
2 ms |
256 KB |
Output is correct |
24 |
Correct |
2 ms |
376 KB |
Output is correct |
25 |
Correct |
2 ms |
376 KB |
Output is correct |
26 |
Correct |
2 ms |
376 KB |
Output is correct |
27 |
Correct |
2 ms |
504 KB |
Output is correct |
28 |
Correct |
2 ms |
256 KB |
Output is correct |
29 |
Correct |
2 ms |
376 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
2 ms |
256 KB |
Output is correct |
4 |
Correct |
2 ms |
376 KB |
Output is correct |
5 |
Correct |
2 ms |
256 KB |
Output is correct |
6 |
Correct |
2 ms |
376 KB |
Output is correct |
7 |
Correct |
2 ms |
256 KB |
Output is correct |
8 |
Correct |
2 ms |
256 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 |
256 KB |
Output is correct |
12 |
Correct |
2 ms |
376 KB |
Output is correct |
13 |
Correct |
2 ms |
256 KB |
Output is correct |
14 |
Correct |
2 ms |
256 KB |
Output is correct |
15 |
Correct |
2 ms |
376 KB |
Output is correct |
16 |
Correct |
2 ms |
256 KB |
Output is correct |
17 |
Correct |
2 ms |
256 KB |
Output is correct |
18 |
Correct |
2 ms |
256 KB |
Output is correct |
19 |
Correct |
2 ms |
376 KB |
Output is correct |
20 |
Correct |
2 ms |
376 KB |
Output is correct |
21 |
Correct |
2 ms |
256 KB |
Output is correct |
22 |
Correct |
2 ms |
376 KB |
Output is correct |
23 |
Correct |
2 ms |
256 KB |
Output is correct |
24 |
Correct |
2 ms |
376 KB |
Output is correct |
25 |
Correct |
2 ms |
376 KB |
Output is correct |
26 |
Correct |
2 ms |
376 KB |
Output is correct |
27 |
Correct |
2 ms |
504 KB |
Output is correct |
28 |
Correct |
2 ms |
256 KB |
Output is correct |
29 |
Correct |
2 ms |
376 KB |
Output is correct |
30 |
Correct |
198 ms |
12084 KB |
Output is correct |
31 |
Correct |
194 ms |
12092 KB |
Output is correct |
32 |
Correct |
145 ms |
19924 KB |
Output is correct |
33 |
Correct |
165 ms |
17500 KB |
Output is correct |
34 |
Correct |
165 ms |
17528 KB |
Output is correct |
35 |
Correct |
166 ms |
16376 KB |
Output is correct |
36 |
Correct |
157 ms |
14072 KB |
Output is correct |
37 |
Correct |
153 ms |
12280 KB |
Output is correct |
38 |
Correct |
158 ms |
12084 KB |
Output is correct |
39 |
Correct |
158 ms |
12152 KB |
Output is correct |
40 |
Correct |
165 ms |
12152 KB |
Output is correct |
41 |
Correct |
190 ms |
12024 KB |
Output is correct |
42 |
Correct |
185 ms |
12024 KB |
Output is correct |
43 |
Correct |
156 ms |
17876 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
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 |
256 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 |
256 KB |
Output is correct |
16 |
Correct |
2 ms |
256 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 |
256 KB |
Output is correct |
20 |
Correct |
2 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
2 ms |
256 KB |
Output is correct |
4 |
Correct |
2 ms |
376 KB |
Output is correct |
5 |
Correct |
2 ms |
256 KB |
Output is correct |
6 |
Correct |
2 ms |
376 KB |
Output is correct |
7 |
Correct |
2 ms |
256 KB |
Output is correct |
8 |
Correct |
2 ms |
256 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 |
256 KB |
Output is correct |
12 |
Correct |
2 ms |
376 KB |
Output is correct |
13 |
Correct |
2 ms |
256 KB |
Output is correct |
14 |
Correct |
2 ms |
256 KB |
Output is correct |
15 |
Correct |
2 ms |
376 KB |
Output is correct |
16 |
Correct |
2 ms |
256 KB |
Output is correct |
17 |
Correct |
2 ms |
256 KB |
Output is correct |
18 |
Correct |
2 ms |
256 KB |
Output is correct |
19 |
Correct |
2 ms |
376 KB |
Output is correct |
20 |
Correct |
2 ms |
376 KB |
Output is correct |
21 |
Correct |
2 ms |
256 KB |
Output is correct |
22 |
Correct |
2 ms |
376 KB |
Output is correct |
23 |
Correct |
2 ms |
256 KB |
Output is correct |
24 |
Correct |
2 ms |
376 KB |
Output is correct |
25 |
Correct |
2 ms |
376 KB |
Output is correct |
26 |
Correct |
2 ms |
376 KB |
Output is correct |
27 |
Correct |
2 ms |
504 KB |
Output is correct |
28 |
Correct |
2 ms |
256 KB |
Output is correct |
29 |
Correct |
2 ms |
376 KB |
Output is correct |
30 |
Correct |
198 ms |
12084 KB |
Output is correct |
31 |
Correct |
194 ms |
12092 KB |
Output is correct |
32 |
Correct |
145 ms |
19924 KB |
Output is correct |
33 |
Correct |
165 ms |
17500 KB |
Output is correct |
34 |
Correct |
165 ms |
17528 KB |
Output is correct |
35 |
Correct |
166 ms |
16376 KB |
Output is correct |
36 |
Correct |
157 ms |
14072 KB |
Output is correct |
37 |
Correct |
153 ms |
12280 KB |
Output is correct |
38 |
Correct |
158 ms |
12084 KB |
Output is correct |
39 |
Correct |
158 ms |
12152 KB |
Output is correct |
40 |
Correct |
165 ms |
12152 KB |
Output is correct |
41 |
Correct |
190 ms |
12024 KB |
Output is correct |
42 |
Correct |
185 ms |
12024 KB |
Output is correct |
43 |
Correct |
156 ms |
17876 KB |
Output is correct |
44 |
Correct |
2 ms |
376 KB |
Output is correct |
45 |
Correct |
2 ms |
376 KB |
Output is correct |
46 |
Correct |
2 ms |
376 KB |
Output is correct |
47 |
Correct |
2 ms |
376 KB |
Output is correct |
48 |
Correct |
2 ms |
376 KB |
Output is correct |
49 |
Correct |
2 ms |
256 KB |
Output is correct |
50 |
Correct |
2 ms |
376 KB |
Output is correct |
51 |
Correct |
2 ms |
376 KB |
Output is correct |
52 |
Correct |
2 ms |
376 KB |
Output is correct |
53 |
Correct |
2 ms |
376 KB |
Output is correct |
54 |
Correct |
2 ms |
376 KB |
Output is correct |
55 |
Correct |
2 ms |
376 KB |
Output is correct |
56 |
Correct |
2 ms |
376 KB |
Output is correct |
57 |
Correct |
2 ms |
376 KB |
Output is correct |
58 |
Correct |
2 ms |
256 KB |
Output is correct |
59 |
Correct |
2 ms |
256 KB |
Output is correct |
60 |
Correct |
2 ms |
376 KB |
Output is correct |
61 |
Correct |
2 ms |
376 KB |
Output is correct |
62 |
Correct |
2 ms |
256 KB |
Output is correct |
63 |
Correct |
2 ms |
348 KB |
Output is correct |
64 |
Correct |
157 ms |
24584 KB |
Output is correct |
65 |
Correct |
157 ms |
25252 KB |
Output is correct |
66 |
Correct |
159 ms |
19036 KB |
Output is correct |
67 |
Correct |
161 ms |
18980 KB |
Output is correct |
68 |
Correct |
17 ms |
2300 KB |
Output is correct |
69 |
Correct |
17 ms |
2224 KB |
Output is correct |
70 |
Correct |
17 ms |
2424 KB |
Output is correct |
71 |
Correct |
18 ms |
2552 KB |
Output is correct |
72 |
Correct |
17 ms |
2680 KB |
Output is correct |
73 |
Correct |
18 ms |
2040 KB |
Output is correct |
74 |
Correct |
167 ms |
24272 KB |
Output is correct |
75 |
Correct |
166 ms |
24184 KB |
Output is correct |
76 |
Correct |
167 ms |
24540 KB |
Output is correct |
77 |
Correct |
166 ms |
24644 KB |
Output is correct |
78 |
Correct |
161 ms |
23792 KB |
Output is correct |
79 |
Correct |
160 ms |
23744 KB |
Output is correct |
80 |
Correct |
147 ms |
26660 KB |
Output is correct |
81 |
Correct |
166 ms |
22776 KB |
Output is correct |
82 |
Correct |
165 ms |
22776 KB |
Output is correct |
83 |
Correct |
169 ms |
21828 KB |
Output is correct |
84 |
Correct |
165 ms |
21112 KB |
Output is correct |
85 |
Correct |
163 ms |
19884 KB |
Output is correct |
86 |
Correct |
158 ms |
19268 KB |
Output is correct |
87 |
Correct |
191 ms |
25512 KB |
Output is correct |
88 |
Correct |
182 ms |
24312 KB |
Output is correct |
89 |
Correct |
171 ms |
22564 KB |
Output is correct |
90 |
Correct |
158 ms |
18936 KB |
Output is correct |
91 |
Correct |
163 ms |
18808 KB |
Output is correct |
92 |
Correct |
167 ms |
18780 KB |
Output is correct |