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Submission #730612

# Submission time Handle Problem Language Result Execution time Memory
730612 2023-04-26T07:49:09 Z vjudge1 Izbori (COCI22_izbori) C++17
110 / 110
 2268 ms 17996 KB 
#include <iostream>
#include <map>
#include <vector>
using namespace std;
map<long long int, int> m;
long long int a[200005], c[200005];
vector<int> g[200005];
struct FENWICK {
    vector<long long int> v;
    FENWICK (int n) {
        v.resize(n + 1);
        for (int i = 0; i <= n; i++) {
            v[i] = 0;
        }
    }
    long long int build(long long int x) {
        long long int res = 0;
        x++;
        while (x) {
            res += v[x];
            x -= (x & (-x));
        }
        return res;
    }
    void update(long long int x, long long int y) {
        x++;
        while (x < v.size()) {
            v[x] += y;
            x += (x & (-x));
        }
    }
    long long int sum(long long int l, long long int r) {
        if (l == 0) return build(r);
        return build(r) - build(l - 1);
    }
};
int main() {
    long long int n, d = 0, res = 0;
    cin >> n;
    for (int i = 0; i < n; i++) {
        cin >> a[i];
        if (!m.count(a[i])) {
            m[a[i]] = m.size();
        }
        a[i] = m[a[i]];
        g[a[i]].push_back(i);
    }
    for (long long int x = 0; x <= n; x++) {
        if (g[x].empty()) continue;
        if (g[x].size() >= 450) {
            c[0] = 0;
            for (int i = 1; i <= n; i++) {
                c[i] = c[i - 1];
                if (a[i - 1] == x) c[i]++;
            }
            FENWICK f(n + c[n] * 2 + 1);
            for (int j = 0; j < n; j++) {
                f.update(c[j] * 2 + n - j + 2, 1);
                res += f.sum(0, c[j + 1] * 2 + n - j);
            }
        }
        else {
            vector<int> v = g[x];
            for (int i = 0; i < v.size(); i++) {
                for (int j = i; j < v.size(); j++) {
                    long long int l, r;
                    if (i == 0) l = v[i];
                    else l = v[i] - v[i - 1] - 1;
                    if (j == v.size() - 1) r = n - v[j];
                    else r = v[j + 1] - v[j];
                    long long int k = (j - i) * 2 + v[i] - v[j] + 1;
                    res += max(min(l, k) - max(k - r, 0ll) + 1, 0ll) * k;
                    long long int ll = max(k - r, 0ll), rr = min(l, k);
                    if (ll <= rr) {
                        res -= (rr + 1) * rr / 2 - ll * (ll - 1) / 2;
                    }
                    res += r * max(min(k - r - 1, l) + 1, 0ll);
                }
            }
        }
    }
    cout << res;
}

Compilation message

Main.cpp: In member function 'void FENWICK::update(long long int, long long int)':
Main.cpp:27:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |         while (x < v.size()) {
      |                ~~^~~~~~~~~~
Main.cpp: In function 'int main()':
Main.cpp:64:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   64 |             for (int i = 0; i < v.size(); i++) {
      |                             ~~^~~~~~~~~~
Main.cpp:65:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   65 |                 for (int j = i; j < v.size(); j++) {
      |                                 ~~^~~~~~~~~~
Main.cpp:69:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   69 |                     if (j == v.size() - 1) r = n - v[j];
      |                         ~~^~~~~~~~~~~~~~~
Main.cpp:38:22: warning: unused variable 'd' [-Wunused-variable]
   38 |     long long int n, d = 0, res = 0;
      |                      ^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 3 ms 5008 KB Output is correct
4 Correct 4 ms 4948 KB Output is correct
5 Correct 4 ms 4948 KB Output is correct
6 Correct 5 ms 5004 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 3 ms 5008 KB Output is correct
4 Correct 4 ms 4948 KB Output is correct
5 Correct 4 ms 4948 KB Output is correct
6 Correct 5 ms 5004 KB Output is correct
7 Correct 5 ms 5020 KB Output is correct
8 Correct 5 ms 4948 KB Output is correct
9 Correct 5 ms 4948 KB Output is correct
10 Correct 6 ms 5076 KB Output is correct
11 Correct 6 ms 5076 KB Output is correct
12 Correct 6 ms 5024 KB Output is correct
13 Correct 5 ms 5076 KB Output is correct
14 Correct 5 ms 4948 KB Output is correct
15 Correct 6 ms 5012 KB Output is correct
16 Correct 6 ms 5076 KB Output is correct
17 Correct 6 ms 5016 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 36 ms 9940 KB Output is correct
2 Correct 43 ms 11444 KB Output is correct
3 Correct 29 ms 8852 KB Output is correct
4 Correct 44 ms 11648 KB Output is correct
5 Correct 52 ms 11788 KB Output is correct
6 Correct 48 ms 12344 KB Output is correct
7 Correct 47 ms 12324 KB Output is correct
8 Correct 47 ms 12348 KB Output is correct
9 Correct 46 ms 12268 KB Output is correct
10 Correct 48 ms 12276 KB Output is correct
11 Correct 41 ms 13740 KB Output is correct

Subtask #4
70.0 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 3 ms 5008 KB Output is correct
4 Correct 4 ms 4948 KB Output is correct
5 Correct 4 ms 4948 KB Output is correct
6 Correct 5 ms 5004 KB Output is correct
7 Correct 5 ms 5020 KB Output is correct
8 Correct 5 ms 4948 KB Output is correct
9 Correct 5 ms 4948 KB Output is correct
10 Correct 6 ms 5076 KB Output is correct
11 Correct 6 ms 5076 KB Output is correct
12 Correct 6 ms 5024 KB Output is correct
13 Correct 5 ms 5076 KB Output is correct
14 Correct 5 ms 4948 KB Output is correct
15 Correct 6 ms 5012 KB Output is correct
16 Correct 6 ms 5076 KB Output is correct
17 Correct 6 ms 5016 KB Output is correct
18 Correct 36 ms 9940 KB Output is correct
19 Correct 43 ms 11444 KB Output is correct
20 Correct 29 ms 8852 KB Output is correct
21 Correct 44 ms 11648 KB Output is correct
22 Correct 52 ms 11788 KB Output is correct
23 Correct 48 ms 12344 KB Output is correct
24 Correct 47 ms 12324 KB Output is correct
25 Correct 47 ms 12348 KB Output is correct
26 Correct 46 ms 12268 KB Output is correct
27 Correct 48 ms 12276 KB Output is correct
28 Correct 41 ms 13740 KB Output is correct
29 Correct 86 ms 13944 KB Output is correct
30 Correct 43 ms 8620 KB Output is correct
31 Correct 96 ms 11680 KB Output is correct
32 Correct 188 ms 17996 KB Output is correct
33 Correct 91 ms 12028 KB Output is correct
34 Correct 109 ms 12256 KB Output is correct
35 Correct 76 ms 10060 KB Output is correct
36 Correct 33 ms 8224 KB Output is correct
37 Correct 37 ms 8804 KB Output is correct
38 Correct 65 ms 11600 KB Output is correct
39 Correct 69 ms 11336 KB Output is correct
40 Correct 74 ms 11456 KB Output is correct
41 Correct 67 ms 11288 KB Output is correct
42 Correct 68 ms 11536 KB Output is correct
43 Correct 141 ms 11444 KB Output is correct
44 Correct 153 ms 11340 KB Output is correct
45 Correct 140 ms 11292 KB Output is correct
46 Correct 137 ms 11284 KB Output is correct
47 Correct 152 ms 11400 KB Output is correct
48 Correct 1253 ms 10892 KB Output is correct
49 Correct 1223 ms 10888 KB Output is correct
50 Correct 496 ms 11416 KB Output is correct
51 Correct 535 ms 11328 KB Output is correct
52 Correct 2268 ms 10768 KB Output is correct
53 Correct 2132 ms 10680 KB Output is correct
54 Correct 1205 ms 10768 KB Output is correct