QOJ.ac

QOJ

ID题目提交者结果用时内存语言文件大小提交时间测评时间
#426615#6320. Parallel Processing (Hard)james1BadCreeperAC ✓1ms3676kbC++174.7kb2024-05-31 16:18:122024-05-31 16:18:14

Judging History

你现在查看的是最新测评结果

  • [2024-05-31 16:18:14]
  • 评测
  • 测评结果:AC
  • 用时:1ms
  • 内存:3676kb
  • [2024-05-31 16:18:12]
  • 提交

answer

#include <bits/stdc++.h>
using namespace std;

int id, n, I, be = 5; 
vector<tuple<int, int, int>> ans; 

/*
inline int get(int x) {
    if (x % 4 == 1) return x - 1; 
    if (x % 4 == 2) return x - 2; 
    if (x % 4 == 3) return x - 3; 
    return x - 4; 
}

int over = 4; 
inline void mkans(void) {
    if (get(be) <= over && be < I) {
        ans.emplace_back(be, get(be), be); 
        ++be; 
    } else ans.emplace_back(2000, 2000, 2000); 
}
*/

void solve(int n) {
    /*
    int I, be = 5; 
    for (I = 1; I + 3 - 1 <= n; I += 8) {
        ans.emplace_back(I + 1, I, I + 1); 
        if (I + 3 <= n) ans.emplace_back(I + 3, I + 2, I + 3); 
        else mkans(); 
        if (I + 1 + 4 <= n) ans.emplace_back(I + 1 + 4, I + 4, I + 1 + 4); 
        else mkans(); 
        if (I + 3 + 4 <= n) ans.emplace_back(I + 3 + 4, I + 2 + 4, I + 3 + 4); 
        else mkans(); 
        over = be; 

        ans.emplace_back(I + 2, I + 1, I + 2);  
        if (I + 3 <= n) ans.emplace_back(I + 3, I + 1, I + 3);  
        else mkans(); 
        if (I + 2 + 4 <= n) ans.emplace_back(I + 2 + 4, I + 1 + 4, I + 2 + 4); 
        else mkans(); 
        if (I + 3 + 4 <= n) ans.emplace_back(I + 3 + 4, I + 1 + 4, I + 3 + 4); 
        else mkans(); 
        over = be; 
    }
    if (I < n) {
        ans.emplace_back(I + 1, I, I + 1); 
        mkans(); mkans(); mkans(); over = be; 
    }
    // cerr << ans.size() << "\n"; 
    int cnt = 0; 
    while (be % 4 != 1) ans.emplace_back(be, get(be), be), ++be, ++cnt; 
    while (cnt != 0 && cnt != 4) ans.emplace_back(2000, 2000, 2000), ++cnt; 
    for (; be <= n; be += 4) {
        ans.emplace_back(be, get(be), be); 
        if (be + 1 <= n) ans.emplace_back(be + 1, get(be + 1), be + 1);  
        else ans.emplace_back(2000, 2000, 2000); 
        if (be + 2 <= n) ans.emplace_back(be + 2, get(be + 2), be + 2); 
        else ans.emplace_back(2000, 2000, 2000); 
        if (be + 3 <= n) ans.emplace_back(be + 3, get(be + 3), be + 3); 
        else ans.emplace_back(2000, 2000, 2000); 
    }
    */

    if (n >= 17) {
        solve(n - 10); // n - 9 
        auto add = [&](int a, int b, int c) -> void {
            if (a > n || b > n || c > n) ans.emplace_back(2000, 2000, 2000); 
            else ans.emplace_back(a + n - 11, b + n - 11, c + n - 11); 
        };
        add(2, 1, 2); add(4, 3, 4); add(6, 5, 6); add(8, 7, 8); 
        add(10, 9, 10); add(3, 2, 3); add(4, 2, 4); add(8, 6, 8); 
        add(5, 4, 5); add(6, 4, 6); add(8, 4, 8); add(11, 10, 11); 
        add(7, 6, 7); add(9, 8, 9); add(10, 8, 10); add(11, 8, 11);
        return; 
    }

    auto add = [&](int a, int b, int c) -> void {
        if (a > n || b > n || c > n) ans.emplace_back(2000, 2000, 2000);
        else ans.emplace_back(a, b, c);
    };
    if (n == 1) ;
    else if (n == 2) {
        add(2, 1, 2); add(2000, 2000, 2000); add(2000, 2000, 2000); add(2000, 2000, 2000);
    } else if (n <= 4) {
        add(2, 1, 2); add(4, 3, 4); add(2000, 2000, 2000); add(2000, 2000, 2000); 
        add(3, 2, 3); add(4, 2, 4); add(2000, 2000, 2000); add(2000, 2000, 2000);
    } else if (n <= 8) { 
        add(2, 1, 2); add(4, 3, 4); add(6, 5, 6); add(8, 7, 8); 
        add(3, 2, 3); add(4, 2, 4); add(7, 6, 7); add(8, 6, 8); 
        add(5, 4, 5); add(6, 4, 6); add(7, 4, 7); add(8, 4, 8);
    } else if (n <= 11) {
        add(2, 1, 2); add(4, 3, 4); add(6, 5, 6); add(8, 7, 8); 
        add(10, 9, 10); add(3, 2, 3); add(4, 2, 4); add(8, 6, 8); 
        add(5, 4, 5); add(6, 4, 6); add(8, 4, 8); add(11, 10, 11); 
        add(7, 6, 7); add(9, 8, 9); add(10, 8, 10); add(11, 8, 11);
    } else if (n <= 13) {
        add(2, 1, 2); add(4, 3, 4); add(6, 5, 6); add(8, 7, 8); 
        add(4, 2, 4); add(8, 6, 8); add(10, 9, 10); add(12, 11, 12);
        add(3, 2, 3); add(6, 4, 6); add(8, 4, 8); add(13, 12, 13); 
        add(5, 4, 5); add(7, 6, 7); add(9, 8, 9); add(10, 8, 10); 
        add(11, 10, 11); add(12, 10, 12); add(13, 10, 13); add(2000, 2000, 2000);
    } else if (n <= 16) {
        add(2, 1, 2); add(4, 3, 4); add(6, 5, 6); add(8, 7, 8); 
        add(4, 2, 4); add(8, 6, 8); add(10, 9, 10); add(12, 11, 12); 
        add(6, 4, 6); add(8, 4, 8); add(14, 13, 14); add(16, 15, 16); 
        add(3, 2, 3); add(5, 4, 5); add(10, 8, 10); add(14, 12, 14); 
        add(7, 6, 7); add(9, 8, 9); add(12, 10, 12); add(14, 10, 14); 
        add(11, 10, 11); add(13, 12, 13); add(15, 14, 15); add(16, 14, 16);
    }
}

int main(void) {
    ios::sync_with_stdio(0); cin.tie(0); 
    cin >> n; 
    solve(n); 
    // cin >> n; 
    cout << ans.size() / 4 << "\n"; 
    for (auto [i, j, k] : ans) cout << i << " " << j << " " << k << "\n"; 
    return 0; 
}

詳細信息

Test #1:

score: 100
Accepted
time: 0ms
memory: 3624kb

input:

17

output:

7
2 1 2
4 3 4
6 5 6
2000 2000 2000
3 2 3
4 2 4
7 6 7
2000 2000 2000
5 4 5
6 4 6
7 4 7
2000 2000 2000
8 7 8
10 9 10
12 11 12
14 13 14
16 15 16
9 8 9
10 8 10
14 12 14
11 10 11
12 10 12
14 10 14
17 16 17
13 12 13
15 14 15
16 14 16
17 14 17

result:

ok AC

Test #2:

score: 0
Accepted
time: 0ms
memory: 3624kb

input:

18

output:

7
2 1 2
4 3 4
6 5 6
8 7 8
3 2 3
4 2 4
7 6 7
8 6 8
5 4 5
6 4 6
7 4 7
8 4 8
9 8 9
11 10 11
13 12 13
15 14 15
17 16 17
10 9 10
11 9 11
15 13 15
12 11 12
13 11 13
15 11 15
18 17 18
14 13 14
16 15 16
17 15 17
18 15 18

result:

ok AC

Test #3:

score: 0
Accepted
time: 0ms
memory: 3592kb

input:

19

output:

8
2 1 2
4 3 4
6 5 6
8 7 8
2000 2000 2000
3 2 3
4 2 4
8 6 8
5 4 5
6 4 6
8 4 8
2000 2000 2000
7 6 7
9 8 9
2000 2000 2000
2000 2000 2000
10 9 10
12 11 12
14 13 14
16 15 16
18 17 18
11 10 11
12 10 12
16 14 16
13 12 13
14 12 14
16 12 16
19 18 19
15 14 15
17 16 17
18 16 18
19 16 19

result:

ok AC

Test #4:

score: 0
Accepted
time: 0ms
memory: 3520kb

input:

20

output:

8
2 1 2
4 3 4
6 5 6
8 7 8
10 9 10
3 2 3
4 2 4
8 6 8
5 4 5
6 4 6
8 4 8
2000 2000 2000
7 6 7
9 8 9
10 8 10
2000 2000 2000
11 10 11
13 12 13
15 14 15
17 16 17
19 18 19
12 11 12
13 11 13
17 15 17
14 13 14
15 13 15
17 13 17
20 19 20
16 15 16
18 17 18
19 17 19
20 17 20

result:

ok AC

Test #5:

score: 0
Accepted
time: 0ms
memory: 3592kb

input:

21

output:

8
2 1 2
4 3 4
6 5 6
8 7 8
10 9 10
3 2 3
4 2 4
8 6 8
5 4 5
6 4 6
8 4 8
11 10 11
7 6 7
9 8 9
10 8 10
11 8 11
12 11 12
14 13 14
16 15 16
18 17 18
20 19 20
13 12 13
14 12 14
18 16 18
15 14 15
16 14 16
18 14 18
21 20 21
17 16 17
19 18 19
20 18 20
21 18 21

result:

ok AC

Test #6:

score: 0
Accepted
time: 0ms
memory: 3544kb

input:

120

output:

48
2 1 2
4 3 4
6 5 6
8 7 8
10 9 10
3 2 3
4 2 4
8 6 8
5 4 5
6 4 6
8 4 8
2000 2000 2000
7 6 7
9 8 9
10 8 10
2000 2000 2000
11 10 11
13 12 13
15 14 15
17 16 17
19 18 19
12 11 12
13 11 13
17 15 17
14 13 14
15 13 15
17 13 17
20 19 20
16 15 16
18 17 18
19 17 19
20 17 20
21 20 21
23 22 23
25 24 25
27 26 27...

result:

ok AC

Test #7:

score: 0
Accepted
time: 0ms
memory: 3624kb

input:

421

output:

168
2 1 2
4 3 4
6 5 6
8 7 8
10 9 10
3 2 3
4 2 4
8 6 8
5 4 5
6 4 6
8 4 8
11 10 11
7 6 7
9 8 9
10 8 10
11 8 11
12 11 12
14 13 14
16 15 16
18 17 18
20 19 20
13 12 13
14 12 14
18 16 18
15 14 15
16 14 16
18 14 18
21 20 21
17 16 17
19 18 19
20 18 20
21 18 21
22 21 22
24 23 24
26 25 26
28 27 28
30 29 30
23...

result:

ok AC

Test #8:

score: 0
Accepted
time: 0ms
memory: 3652kb

input:

464

output:

186
2 1 2
4 3 4
6 5 6
8 7 8
4 2 4
8 6 8
10 9 10
12 11 12
6 4 6
8 4 8
14 13 14
2000 2000 2000
3 2 3
5 4 5
10 8 10
14 12 14
7 6 7
9 8 9
12 10 12
14 10 14
11 10 11
13 12 13
2000 2000 2000
2000 2000 2000
15 14 15
17 16 17
19 18 19
21 20 21
23 22 23
16 15 16
17 15 17
21 19 21
18 17 18
19 17 19
21 17 21
2...

result:

ok AC

Test #9:

score: 0
Accepted
time: 1ms
memory: 3616kb

input:

812

output:

325
2 1 2
4 3 4
6 5 6
8 7 8
4 2 4
8 6 8
10 9 10
12 11 12
3 2 3
6 4 6
8 4 8
2000 2000 2000
5 4 5
7 6 7
9 8 9
10 8 10
11 10 11
12 10 12
2000 2000 2000
2000 2000 2000
13 12 13
15 14 15
17 16 17
19 18 19
21 20 21
14 13 14
15 13 15
19 17 19
16 15 16
17 15 17
19 15 19
22 21 22
18 17 18
20 19 20
21 19 21
2...

result:

ok AC

Test #10:

score: 0
Accepted
time: 1ms
memory: 3592kb

input:

862

output:

345
2 1 2
4 3 4
6 5 6
8 7 8
4 2 4
8 6 8
10 9 10
12 11 12
3 2 3
6 4 6
8 4 8
2000 2000 2000
5 4 5
7 6 7
9 8 9
10 8 10
11 10 11
12 10 12
2000 2000 2000
2000 2000 2000
13 12 13
15 14 15
17 16 17
19 18 19
21 20 21
14 13 14
15 13 15
19 17 19
16 15 16
17 15 17
19 15 19
22 21 22
18 17 18
20 19 20
21 19 21
2...

result:

ok AC

Test #11:

score: 0
Accepted
time: 1ms
memory: 3596kb

input:

996

output:

398
2 1 2
4 3 4
6 5 6
8 7 8
4 2 4
8 6 8
10 9 10
12 11 12
6 4 6
8 4 8
14 13 14
16 15 16
3 2 3
5 4 5
10 8 10
14 12 14
7 6 7
9 8 9
12 10 12
14 10 14
11 10 11
13 12 13
15 14 15
16 14 16
17 16 17
19 18 19
21 20 21
23 22 23
25 24 25
18 17 18
19 17 19
23 21 23
20 19 20
21 19 21
23 19 23
26 25 26
22 21 22
2...

result:

ok AC

Test #12:

score: 0
Accepted
time: 1ms
memory: 3656kb

input:

997

output:

399
2 1 2
4 3 4
6 5 6
2000 2000 2000
3 2 3
4 2 4
7 6 7
2000 2000 2000
5 4 5
6 4 6
7 4 7
2000 2000 2000
8 7 8
10 9 10
12 11 12
14 13 14
16 15 16
9 8 9
10 8 10
14 12 14
11 10 11
12 10 12
14 10 14
17 16 17
13 12 13
15 14 15
16 14 16
17 14 17
18 17 18
20 19 20
22 21 22
24 23 24
26 25 26
19 18 19
20 18 2...

result:

ok AC

Test #13:

score: 0
Accepted
time: 1ms
memory: 3676kb

input:

998

output:

399
2 1 2
4 3 4
6 5 6
8 7 8
3 2 3
4 2 4
7 6 7
8 6 8
5 4 5
6 4 6
7 4 7
8 4 8
9 8 9
11 10 11
13 12 13
15 14 15
17 16 17
10 9 10
11 9 11
15 13 15
12 11 12
13 11 13
15 11 15
18 17 18
14 13 14
16 15 16
17 15 17
18 15 18
19 18 19
21 20 21
23 22 23
25 24 25
27 26 27
20 19 20
21 19 21
25 23 25
22 21 22
23 2...

result:

ok AC

Test #14:

score: 0
Accepted
time: 1ms
memory: 3648kb

input:

999

output:

400
2 1 2
4 3 4
6 5 6
8 7 8
2000 2000 2000
3 2 3
4 2 4
8 6 8
5 4 5
6 4 6
8 4 8
2000 2000 2000
7 6 7
9 8 9
2000 2000 2000
2000 2000 2000
10 9 10
12 11 12
14 13 14
16 15 16
18 17 18
11 10 11
12 10 12
16 14 16
13 12 13
14 12 14
16 12 16
19 18 19
15 14 15
17 16 17
18 16 18
19 16 19
20 19 20
22 21 22
24 ...

result:

ok AC

Test #15:

score: 0
Accepted
time: 1ms
memory: 3592kb

input:

1000

output:

400
2 1 2
4 3 4
6 5 6
8 7 8
10 9 10
3 2 3
4 2 4
8 6 8
5 4 5
6 4 6
8 4 8
2000 2000 2000
7 6 7
9 8 9
10 8 10
2000 2000 2000
11 10 11
13 12 13
15 14 15
17 16 17
19 18 19
12 11 12
13 11 13
17 15 17
14 13 14
15 13 15
17 13 17
20 19 20
16 15 16
18 17 18
19 17 19
20 17 20
21 20 21
23 22 23
25 24 25
27 26 2...

result:

ok AC