답안 #708142

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
708142	2023-03-11T06:20:49 Z	Cyanmond	고대 책들 (IOI17_books)	C++17	50 / 100	136 ms	23796 KB

books

#include "books.h"
#include <bits/stdc++.h>

using i64 = long long;
constexpr i64 inf = 1ll << 50;

void chmax(i64 &a, i64 b) {
    if (a < b) a = b;
}

long long minimum_walk(std::vector<int> p, int s) {
    const int n = (int)p.size();
    std::vector<i64> imos(n), imos2(n);
    for (int i = 0; i < n; ++i) {
        int a = i, b = p[i];
        if (a > b) std::swap(a, b);
        ++imos[a];
        --imos[b];
        if (a != b) {
            ++imos2[a + 1];
            --imos2[b];
        }
    }
    for (int i = 0; i < n - 1; ++i) {
        imos[i + 1] += imos[i];
        imos2[i + 1] += imos2[i];
    }
    i64 baseCost = std::accumulate(imos.begin(), imos.end(), 0ll);

    auto solve = [&](const int f) {
        i64 x = 0, c = 0;
        for (int i = f; i < n; ++i) {
            if (imos[i] == 0) {
                ++c;
            }
            if (imos[i] != 0) {
                x += c;
                c = 0;
            }
        }
        c = 0;
        for (int i = f - 1; i >= 0; --i) {
            if (imos[i] == 0) {
                ++c;
            }
            if (imos[i] != 0) {
                x += c;
                c = 0;
            }
        }
        return x;
    };
    const auto u = solve(s);
    i64 m = inf;
    for (int i = s; i < n; ++i) {
        if (imos2[i] == 0) {
            m = std::min(m, (i64)i - s);
        }
    }
    for (int i = s; i >= 0; --i) {
        if (imos2[i] == 0) {
            m = std::min(m, (i64)s - i);
        }
    }
    return baseCost + 2 * (solve(s) + (imos[s] == 0 ? 0 : m));
}

Compilation message

books.cpp: In function 'long long int minimum_walk(std::vector<int>, int)':
books.cpp:53:16: warning: unused variable 'u' [-Wunused-variable]
   53 |     const auto u = solve(s);
      |                ^

Subtask #1

12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 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	212 KB	Output is correct
11	Correct	0 ms	212 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	0 ms	212 KB	Output is correct
17	Correct	0 ms	212 KB	Output is correct
18	Correct	0 ms	212 KB	Output is correct

Subtask #2

10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 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	212 KB	Output is correct
11	Correct	0 ms	212 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	0 ms	212 KB	Output is correct
17	Correct	0 ms	212 KB	Output is correct
18	Correct	0 ms	212 KB	Output is correct
19	Correct	1 ms	212 KB	Output is correct
20	Correct	1 ms	212 KB	Output is correct
21	Correct	1 ms	212 KB	Output is correct
22	Correct	1 ms	212 KB	Output is correct
23	Correct	1 ms	212 KB	Output is correct
24	Correct	1 ms	212 KB	Output is correct
25	Correct	1 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	0 ms	212 KB	Output is correct
29	Correct	0 ms	212 KB	Output is correct

Subtask #3

28.0 / 28.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 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	212 KB	Output is correct
11	Correct	0 ms	212 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	0 ms	212 KB	Output is correct
17	Correct	0 ms	212 KB	Output is correct
18	Correct	0 ms	212 KB	Output is correct
19	Correct	1 ms	212 KB	Output is correct
20	Correct	1 ms	212 KB	Output is correct
21	Correct	1 ms	212 KB	Output is correct
22	Correct	1 ms	212 KB	Output is correct
23	Correct	1 ms	212 KB	Output is correct
24	Correct	1 ms	212 KB	Output is correct
25	Correct	1 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	0 ms	212 KB	Output is correct
29	Correct	0 ms	212 KB	Output is correct
30	Correct	135 ms	23796 KB	Output is correct
31	Correct	136 ms	23664 KB	Output is correct
32	Correct	116 ms	23672 KB	Output is correct
33	Correct	127 ms	23656 KB	Output is correct
34	Correct	125 ms	23660 KB	Output is correct
35	Correct	127 ms	23656 KB	Output is correct
36	Correct	129 ms	23680 KB	Output is correct
37	Correct	119 ms	23656 KB	Output is correct
38	Correct	120 ms	23660 KB	Output is correct
39	Correct	132 ms	23660 KB	Output is correct
40	Correct	122 ms	23656 KB	Output is correct
41	Correct	128 ms	23756 KB	Output is correct
42	Correct	123 ms	23660 KB	Output is correct
43	Correct	120 ms	23664 KB	Output is correct

Subtask #4

0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	1 ms	212 KB	3rd lines differ - on the 1st token, expected: '3304', found: '3594'
2	Halted	0 ms	0 KB	-

Subtask #5

0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 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	212 KB	Output is correct
11	Correct	0 ms	212 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	0 ms	212 KB	Output is correct
17	Correct	0 ms	212 KB	Output is correct
18	Correct	0 ms	212 KB	Output is correct
19	Correct	1 ms	212 KB	Output is correct
20	Correct	1 ms	212 KB	Output is correct
21	Correct	1 ms	212 KB	Output is correct
22	Correct	1 ms	212 KB	Output is correct
23	Correct	1 ms	212 KB	Output is correct
24	Correct	1 ms	212 KB	Output is correct
25	Correct	1 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	0 ms	212 KB	Output is correct
29	Correct	0 ms	212 KB	Output is correct
30	Correct	135 ms	23796 KB	Output is correct
31	Correct	136 ms	23664 KB	Output is correct
32	Correct	116 ms	23672 KB	Output is correct
33	Correct	127 ms	23656 KB	Output is correct
34	Correct	125 ms	23660 KB	Output is correct
35	Correct	127 ms	23656 KB	Output is correct
36	Correct	129 ms	23680 KB	Output is correct
37	Correct	119 ms	23656 KB	Output is correct
38	Correct	120 ms	23660 KB	Output is correct
39	Correct	132 ms	23660 KB	Output is correct
40	Correct	122 ms	23656 KB	Output is correct
41	Correct	128 ms	23756 KB	Output is correct
42	Correct	123 ms	23660 KB	Output is correct
43	Correct	120 ms	23664 KB	Output is correct
44	Incorrect	1 ms	212 KB	3rd lines differ - on the 1st token, expected: '3304', found: '3594'
45	Halted	0 ms	0 KB	-