Submission #753904

#	Time	Username	Problem	Language	Result	Execution time	Memory
753904		nguyentunglam	Sequence (APIO23_sequence)	C++17	11 / 100	2061 ms	5460 KiB

sequence

#include<bits/stdc++.h>
#define fi first
#define se second
#define endl "\n"
#define ii pair<int, int>
using namespace std;
const int N = 5e5 + 10;
int cnt[N];

int sequence(int n, vector<int> a) {
    int res = 1;
    for(int i = 0; i < n; i++) for(int j = i; j < n; j++) {
        vector<int> v;
        for(int k = i; k <= j; k++) cnt[a[k]]++, v.push_back(a[k]);
        sort(v.begin(), v.end());
        int m = v.size();
        res = max(res, cnt[v[m >> 1]]);
        res = max(res, cnt[v[m - 1 >> 1]]);
        for(int k = i; k <= j; k++) cnt[a[k]] = 0;
    }
    return res;
}

#ifdef ngu
int main() {

    freopen ("task.inp", "r", stdin);
    freopen ("task.out", "w", stdout);

//    int n; cin >> n;
//    vector<int> a(n);
//    for(int i = 0; i < n; i++) cin >> a[i];
//    cout << sequence(n, a);
//    cout << sequence(7, {1, 2, 3, 1, 2, 1, 3});
//    cout << sequence(9, {1, 1, 2, 3, 4, 3, 2, 1, 1});
//    cout << sequence(14, {2, 6, 2, 5, 3, 4, 2, 1, 4, 3, 5, 6, 3, 2});

}
#endif // ngu

Compilation message (stderr)

sequence.cpp: In function 'int sequence(int, std::vector<int>)':
sequence.cpp:18:32: warning: suggest parentheses around '-' inside '>>' [-Wparentheses]
   18 |         res = max(res, cnt[v[m - 1 >> 1]]);
      |                              ~~^~~

• Subtask 1: 11 / 11
• Subtask 2: 0 / 17
• Subtask 3: 0 / 7
• Subtask 4: 0 / 12
• Subtask 5: 0 / 13
• Subtask 6: 0 / 22
• Subtask 7: 0 / 18