oj.uz

Submission #971373

# Submission time Handle Problem Language Result Execution time Memory
971373 2024-04-28T12:15:20 Z RandomUser Izbori (COCI22_izbori) C++17
40 / 110
 3000 ms 5328 KB 
#include <bits/stdc++.h>

using namespace std;
using ll = long long;
using pii = pair<int, int>;

struct BIT {
    int n;
    vector<int> tree;

    BIT(int _n) {
        n = _n + 10;
        tree.resize(_n+60);
    }

    void update(int p, int v) {
        for(p++; p<n; p+=p&-p) tree[p] += v;
    }

    int query(int p) {
        int ans = 0;
        for(p++; p>0; p-=p&-p) ans += tree[p];
        return ans;
    }

    int query(int l, int r) { return query(r) - query(l-1); }
    void reset() { for(int &x : tree) x = 0; }
};

int main() {
    ios_base::sync_with_stdio(false);
    cout.tie(0); cin.tie(0);

    int n;
    ll ans = 0;
    cin >> n;

    vector<int> v(n+1), comp;
    map<int, int> cnt;
    for(int i=1; i<=n; i++) {
        cin >> v[i];
        if(++cnt[v[i]] == 1) comp.push_back(v[i]);
    }

    BIT bit(3*n);
    for(int &x : comp) {
        if(cnt[x] >= 450) {
            int sum = 0;
            bit.update(n+1, 1);
            for(int i=1; i<=n; i++) {
                sum += (v[i] == x);
                ans += bit.query(2*sum - i - 1 + (n + 1));
                bit.update(2*sum - i + (n + 1), 1);
            }
            bit.reset();
        } else {
            ans += cnt[x];

            vector<int> p; p.push_back(0);
            for(int i=1; i<=n; i++)
                if(v[i] == x) p.push_back(i);
            p.push_back(n+1);

            for(int i=1; i<p.size()-1; i++) {
                for(int j=i+1; j<p.size()-1; j++) {
                    if(2 * (j - i + 1) <= p[j] - p[i] + 1) continue;
                    int left = 2 * (j - i + 1) - (p[j] - p[i] + 1) - 1;
                    int L = p[i] - p[i-1] - 1;
                    int R = p[j+1] - p[j] - 1;
                    for(int k=0; k<=min(L,left); k++) ans += min(R, left - k) + 1;

                }
            }
        }
    }

    cout << ans << '\n';
    return 0;
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:64:27: 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=1; i<p.size()-1; i++) {
      |                          ~^~~~~~~~~~~
Main.cpp:65:33: 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+1; j<p.size()-1; j++) {
      |                                ~^~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 464 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 2648 KB Output is correct
2 Correct 16 ms 3272 KB Output is correct
3 Correct 9 ms 2140 KB Output is correct
4 Correct 19 ms 3676 KB Output is correct
5 Correct 19 ms 3672 KB Output is correct
6 Correct 21 ms 3944 KB Output is correct
7 Correct 21 ms 3932 KB Output is correct
8 Correct 20 ms 3932 KB Output is correct
9 Correct 20 ms 3924 KB Output is correct
10 Correct 21 ms 3952 KB Output is correct
11 Correct 14 ms 3928 KB Output is correct

Subtask #4
0 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 464 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 13 ms 2648 KB Output is correct
19 Correct 16 ms 3272 KB Output is correct
20 Correct 9 ms 2140 KB Output is correct
21 Correct 19 ms 3676 KB Output is correct
22 Correct 19 ms 3672 KB Output is correct
23 Correct 21 ms 3944 KB Output is correct
24 Correct 21 ms 3932 KB Output is correct
25 Correct 20 ms 3932 KB Output is correct
26 Correct 20 ms 3924 KB Output is correct
27 Correct 21 ms 3952 KB Output is correct
28 Correct 14 ms 3928 KB Output is correct
29 Correct 21 ms 4696 KB Output is correct
30 Correct 1199 ms 3048 KB Output is correct
31 Execution timed out 3061 ms 5328 KB Time limit exceeded
32 Halted 0 ms 0 KB -