oj.uz

Submission #225424

# Submission time Handle Problem Language Result Execution time Memory
225424 2020-04-20T14:37:17 Z emil_physmath Nice sequence (IZhO18_sequence) C++17
76 / 100
 2000 ms 65244 KB 
#include <algorithm>
#include <iostream>
#include <vector>
#include <set>
using namespace std;
typedef double ldouble;
typedef long long llong;
typedef unsigned int uint;
const int maxN = 100001;

vector<int> nei[400001];
int a[400001];
bool used[400001];

void DFS(int v, vector<int>& order)
{
    used[v] = true;
    for (int to: nei[v])
        if (!used[to])
            DFS(to, order);
    order.push_back(v);
}
bool Check(int n, int m, int len)
{
    if (len >= n)
    {
        llong sum = 0;
        for (int i = 1; i <= n; ++i)
            sum += a[i];
        if (sum >= 0) return false;
        for (int i = 2; i + n - 1 <= len; ++i)
        {
            sum -= a[i - 1];
            sum += a[i + n - 1];
            if (sum >= 0) return false;
        }
    }
    if (len >= m)
    {
        llong sum = 0;
        for (int i = 1; i <= m; ++i)
            sum += a[i];
        if (sum <= 0) return false;
        for (int i = 2; i + m - 1 <= len; ++i)
        {
            sum -= a[i - 1];
            sum += a[i + m - 1];
            if (sum <= 0) return false;
        }
    }
    return true;
}
int main()
{
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);

    int t;
    cin >> t;
    while (t--)
    {
        int n, m;
        cin >> n >> m;
        int ans = 0;
        vector<int> ansArr;
        int len = 0;
        int i = 0;
        do {
            len = max(len, i += n);
            while (i - m >= 0) i -= m;
        } while (i);
        int l = max(1, len - 1), r = len;
        bool up = false;
        int prevLen = 0;
        while (l <= r)
        {
            int len = (l + r) / 2;
            for (int i = 0; i <= len; ++i)
            {
                used[i] = false;
                if (!up) vector<int>().swap(nei[i]);
            }
            for (int i = (up ? prevLen + 1 : 1); i <= len; ++i)
            {
                if (i - n >= 0)
                    nei[i].push_back(i - n);
                if (i - m >= 0)
                    nei[i - m].push_back(i);
            }
            vector<int> order;
            for (int i = 0; i <= len; ++i)
                if (!used[i])
                    DFS(i, order);
            reverse(order.begin(), order.end());
            vector<int> pref(len + 1);
            for (int i = 0; i < order.size(); ++i)
                pref[order[i]] = i;
            for (int i = 1; i < pref.size(); ++i)
                pref[i] -= pref[0];
            pref[0] = 0;
            for (int i = 1; i <= len; ++i)
                a[i] = pref[i] - pref[i - 1];
            if (Check(n, m, len))
            {
                ans = len;
                ansArr.resize(len);
                for (int i = 0; i < len; ++i)
                    ansArr[i] = a[i + 1];
                l = len + 1;
                // up = true;
                prevLen = len;
            }
            else
            {
                r = len - 1;
                up = false;
            }
        }
        cout << ans << endl;
        for (int i = 0; i < ans; ++i)
            cout << ansArr[i] << ' ';
        cout << '\n';
    }
}

Compilation message

sequence.cpp: In function 'int main()':
sequence.cpp:97:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for (int i = 0; i < order.size(); ++i)
                             ~~^~~~~~~~~~~~~~
sequence.cpp:99:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for (int i = 1; i < pref.size(); ++i)
                             ~~^~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 9728 KB Ok
2 Correct 10 ms 9728 KB Ok
3 Correct 10 ms 9728 KB Ok
4 Correct 10 ms 9728 KB Ok
5 Correct 9 ms 9688 KB Ok
6 Correct 10 ms 9728 KB Ok
7 Correct 9 ms 9728 KB Ok
8 Correct 10 ms 9728 KB Ok
9 Correct 10 ms 9728 KB Ok
10 Correct 11 ms 9728 KB Ok
11 Correct 9 ms 9728 KB Ok
12 Correct 9 ms 9728 KB Ok

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 9728 KB Ok
2 Correct 12 ms 9728 KB Ok
3 Correct 10 ms 9728 KB Ok
4 Correct 9 ms 9728 KB Ok
5 Correct 10 ms 9728 KB Ok
6 Correct 13 ms 9984 KB Ok
7 Correct 25 ms 11064 KB Ok
8 Correct 18 ms 10368 KB Ok
9 Correct 30 ms 11268 KB Ok
10 Correct 21 ms 10624 KB Ok

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 9728 KB Ok
2 Correct 9 ms 9728 KB Ok
3 Correct 9 ms 9728 KB Ok
4 Correct 11 ms 9728 KB Ok
5 Correct 10 ms 9856 KB Ok
6 Correct 9 ms 9728 KB Ok
7 Correct 10 ms 9728 KB Ok
8 Correct 10 ms 9728 KB Ok
9 Correct 9 ms 9728 KB Ok
10 Correct 9 ms 9728 KB Ok
11 Correct 10 ms 9728 KB Ok

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 9728 KB Ok
2 Correct 10 ms 9728 KB Ok
3 Correct 9 ms 9728 KB Ok
4 Correct 10 ms 9728 KB Ok
5 Correct 10 ms 9728 KB Ok
6 Correct 295 ms 28140 KB Ok
7 Correct 234 ms 30212 KB Ok
8 Correct 555 ms 33428 KB Ok
9 Correct 348 ms 32392 KB Ok
10 Correct 186 ms 22480 KB Ok
11 Correct 358 ms 34240 KB Ok

Subtask #5
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 9728 KB Ok
2 Correct 10 ms 9728 KB Ok
3 Correct 10 ms 9728 KB Ok
4 Correct 10 ms 9728 KB Ok
5 Correct 9 ms 9688 KB Ok
6 Correct 10 ms 9728 KB Ok
7 Correct 9 ms 9728 KB Ok
8 Correct 10 ms 9728 KB Ok
9 Correct 10 ms 9728 KB Ok
10 Correct 11 ms 9728 KB Ok
11 Correct 9 ms 9728 KB Ok
12 Correct 9 ms 9728 KB Ok
13 Correct 9 ms 9728 KB Ok
14 Correct 9 ms 9728 KB Ok
15 Correct 9 ms 9728 KB Ok
16 Correct 11 ms 9728 KB Ok
17 Correct 10 ms 9856 KB Ok
18 Correct 9 ms 9728 KB Ok
19 Correct 10 ms 9728 KB Ok
20 Correct 10 ms 9728 KB Ok
21 Correct 9 ms 9728 KB Ok
22 Correct 9 ms 9728 KB Ok
23 Correct 10 ms 9728 KB Ok
24 Correct 12 ms 9984 KB Ok
25 Correct 12 ms 9984 KB Ok
26 Correct 13 ms 9984 KB Ok
27 Correct 13 ms 9984 KB Ok
28 Correct 12 ms 9984 KB Ok
29 Correct 11 ms 9984 KB Ok
30 Correct 12 ms 9984 KB Ok
31 Correct 13 ms 9984 KB Ok
32 Correct 12 ms 9984 KB Ok
33 Correct 12 ms 9984 KB Ok
34 Correct 17 ms 10240 KB Ok
35 Correct 17 ms 10240 KB Ok
36 Correct 16 ms 10368 KB Ok
37 Correct 17 ms 10240 KB Ok
38 Correct 17 ms 10240 KB Ok
39 Correct 16 ms 10240 KB Ok
40 Correct 17 ms 10240 KB Ok
41 Correct 17 ms 10240 KB Ok
42 Correct 17 ms 10240 KB Ok
43 Correct 17 ms 10368 KB Ok

Subtask #6
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 9728 KB Ok
2 Correct 10 ms 9728 KB Ok
3 Correct 10 ms 9728 KB Ok
4 Correct 10 ms 9728 KB Ok
5 Correct 9 ms 9688 KB Ok
6 Correct 10 ms 9728 KB Ok
7 Correct 9 ms 9728 KB Ok
8 Correct 10 ms 9728 KB Ok
9 Correct 10 ms 9728 KB Ok
10 Correct 11 ms 9728 KB Ok
11 Correct 9 ms 9728 KB Ok
12 Correct 9 ms 9728 KB Ok
13 Correct 10 ms 9728 KB Ok
14 Correct 12 ms 9728 KB Ok
15 Correct 10 ms 9728 KB Ok
16 Correct 9 ms 9728 KB Ok
17 Correct 10 ms 9728 KB Ok
18 Correct 13 ms 9984 KB Ok
19 Correct 25 ms 11064 KB Ok
20 Correct 18 ms 10368 KB Ok
21 Correct 30 ms 11268 KB Ok
22 Correct 21 ms 10624 KB Ok
23 Correct 9 ms 9728 KB Ok
24 Correct 9 ms 9728 KB Ok
25 Correct 9 ms 9728 KB Ok
26 Correct 11 ms 9728 KB Ok
27 Correct 10 ms 9856 KB Ok
28 Correct 9 ms 9728 KB Ok
29 Correct 10 ms 9728 KB Ok
30 Correct 10 ms 9728 KB Ok
31 Correct 9 ms 9728 KB Ok
32 Correct 9 ms 9728 KB Ok
33 Correct 10 ms 9728 KB Ok
34 Correct 12 ms 9984 KB Ok
35 Correct 12 ms 9984 KB Ok
36 Correct 13 ms 9984 KB Ok
37 Correct 13 ms 9984 KB Ok
38 Correct 12 ms 9984 KB Ok
39 Correct 11 ms 9984 KB Ok
40 Correct 12 ms 9984 KB Ok
41 Correct 13 ms 9984 KB Ok
42 Correct 12 ms 9984 KB Ok
43 Correct 12 ms 9984 KB Ok
44 Correct 17 ms 10240 KB Ok
45 Correct 17 ms 10240 KB Ok
46 Correct 16 ms 10368 KB Ok
47 Correct 17 ms 10240 KB Ok
48 Correct 17 ms 10240 KB Ok
49 Correct 16 ms 10240 KB Ok
50 Correct 17 ms 10240 KB Ok
51 Correct 17 ms 10240 KB Ok
52 Correct 17 ms 10240 KB Ok
53 Correct 17 ms 10368 KB Ok
54 Correct 156 ms 16728 KB Ok
55 Correct 191 ms 16944 KB Ok
56 Correct 181 ms 16800 KB Ok
57 Correct 122 ms 15396 KB Ok
58 Correct 167 ms 16464 KB Ok
59 Correct 165 ms 16080 KB Ok
60 Correct 124 ms 15720 KB Ok
61 Correct 125 ms 15976 KB Ok
62 Correct 204 ms 16780 KB Ok
63 Correct 149 ms 16264 KB Ok
64 Correct 186 ms 16644 KB Ok
65 Correct 173 ms 16612 KB Ok
66 Correct 144 ms 16204 KB Ok
67 Correct 123 ms 16124 KB Ok
68 Correct 177 ms 16480 KB Ok
69 Correct 500 ms 26140 KB Ok
70 Correct 404 ms 26240 KB Ok
71 Correct 389 ms 25956 KB Ok
72 Correct 404 ms 25764 KB Ok
73 Correct 405 ms 25752 KB Ok
74 Correct 394 ms 25372 KB Ok
75 Correct 381 ms 25836 KB Ok
76 Correct 402 ms 25980 KB Ok
77 Correct 380 ms 26004 KB Ok
78 Correct 412 ms 25900 KB Ok
79 Correct 419 ms 26216 KB Ok
80 Correct 368 ms 25464 KB Ok
81 Correct 408 ms 26324 KB Ok
82 Correct 419 ms 26028 KB Ok
83 Correct 404 ms 25752 KB Ok

Subtask #7
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 9728 KB Ok
2 Correct 10 ms 9728 KB Ok
3 Correct 10 ms 9728 KB Ok
4 Correct 10 ms 9728 KB Ok
5 Correct 9 ms 9688 KB Ok
6 Correct 10 ms 9728 KB Ok
7 Correct 9 ms 9728 KB Ok
8 Correct 10 ms 9728 KB Ok
9 Correct 10 ms 9728 KB Ok
10 Correct 11 ms 9728 KB Ok
11 Correct 9 ms 9728 KB Ok
12 Correct 9 ms 9728 KB Ok
13 Correct 10 ms 9728 KB Ok
14 Correct 12 ms 9728 KB Ok
15 Correct 10 ms 9728 KB Ok
16 Correct 9 ms 9728 KB Ok
17 Correct 10 ms 9728 KB Ok
18 Correct 13 ms 9984 KB Ok
19 Correct 25 ms 11064 KB Ok
20 Correct 18 ms 10368 KB Ok
21 Correct 30 ms 11268 KB Ok
22 Correct 21 ms 10624 KB Ok
23 Correct 9 ms 9728 KB Ok
24 Correct 9 ms 9728 KB Ok
25 Correct 9 ms 9728 KB Ok
26 Correct 11 ms 9728 KB Ok
27 Correct 10 ms 9856 KB Ok
28 Correct 9 ms 9728 KB Ok
29 Correct 10 ms 9728 KB Ok
30 Correct 10 ms 9728 KB Ok
31 Correct 9 ms 9728 KB Ok
32 Correct 9 ms 9728 KB Ok
33 Correct 10 ms 9728 KB Ok
34 Correct 10 ms 9728 KB Ok
35 Correct 10 ms 9728 KB Ok
36 Correct 9 ms 9728 KB Ok
37 Correct 10 ms 9728 KB Ok
38 Correct 10 ms 9728 KB Ok
39 Correct 295 ms 28140 KB Ok
40 Correct 234 ms 30212 KB Ok
41 Correct 555 ms 33428 KB Ok
42 Correct 348 ms 32392 KB Ok
43 Correct 186 ms 22480 KB Ok
44 Correct 358 ms 34240 KB Ok
45 Correct 12 ms 9984 KB Ok
46 Correct 12 ms 9984 KB Ok
47 Correct 13 ms 9984 KB Ok
48 Correct 13 ms 9984 KB Ok
49 Correct 12 ms 9984 KB Ok
50 Correct 11 ms 9984 KB Ok
51 Correct 12 ms 9984 KB Ok
52 Correct 13 ms 9984 KB Ok
53 Correct 12 ms 9984 KB Ok
54 Correct 12 ms 9984 KB Ok
55 Correct 17 ms 10240 KB Ok
56 Correct 17 ms 10240 KB Ok
57 Correct 16 ms 10368 KB Ok
58 Correct 17 ms 10240 KB Ok
59 Correct 17 ms 10240 KB Ok
60 Correct 16 ms 10240 KB Ok
61 Correct 17 ms 10240 KB Ok
62 Correct 17 ms 10240 KB Ok
63 Correct 17 ms 10240 KB Ok
64 Correct 17 ms 10368 KB Ok
65 Correct 156 ms 16728 KB Ok
66 Correct 191 ms 16944 KB Ok
67 Correct 181 ms 16800 KB Ok
68 Correct 122 ms 15396 KB Ok
69 Correct 167 ms 16464 KB Ok
70 Correct 165 ms 16080 KB Ok
71 Correct 124 ms 15720 KB Ok
72 Correct 125 ms 15976 KB Ok
73 Correct 204 ms 16780 KB Ok
74 Correct 149 ms 16264 KB Ok
75 Correct 186 ms 16644 KB Ok
76 Correct 173 ms 16612 KB Ok
77 Correct 144 ms 16204 KB Ok
78 Correct 123 ms 16124 KB Ok
79 Correct 177 ms 16480 KB Ok
80 Correct 500 ms 26140 KB Ok
81 Correct 404 ms 26240 KB Ok
82 Correct 389 ms 25956 KB Ok
83 Correct 404 ms 25764 KB Ok
84 Correct 405 ms 25752 KB Ok
85 Correct 394 ms 25372 KB Ok
86 Correct 381 ms 25836 KB Ok
87 Correct 402 ms 25980 KB Ok
88 Correct 380 ms 26004 KB Ok
89 Correct 412 ms 25900 KB Ok
90 Correct 419 ms 26216 KB Ok
91 Correct 368 ms 25464 KB Ok
92 Correct 408 ms 26324 KB Ok
93 Correct 419 ms 26028 KB Ok
94 Correct 404 ms 25752 KB Ok
95 Correct 417 ms 26408 KB Ok
96 Correct 796 ms 36140 KB Ok
97 Correct 863 ms 30356 KB Ok
98 Correct 417 ms 29268 KB Ok
99 Correct 621 ms 29496 KB Ok
100 Correct 725 ms 30988 KB Ok
101 Correct 687 ms 32872 KB Ok
102 Correct 602 ms 31752 KB Ok
103 Correct 613 ms 31884 KB Ok
104 Correct 863 ms 34384 KB Ok
105 Correct 812 ms 36532 KB Ok
106 Correct 507 ms 33012 KB Ok
107 Correct 644 ms 33404 KB Ok
108 Correct 941 ms 35604 KB Ok
109 Correct 716 ms 33944 KB Ok
110 Execution timed out 2078 ms 65244 KB Time limit exceeded
111 Halted 0 ms 0 KB -