Submission #374787

#	Time	Username	Problem	Language	Result	Execution time	Memory
374787		valerikk	Bubble Sort 2 (JOI18_bubblesort2)	C++17	38 / 100	9022 ms	2732 KiB

bubblesort2

/*
    doing virtual contest
    start: 10:00
    finish: 14:00
*/
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef long double ld;

vector<int> countScans(vector<int> a, vector<int> x, vector<int> v) {
    int n = (int)a.size(), q = (int)x.size();
    vector<int> ret;
    for (int j = 0; j < q; ++j) {
        a[x[j]] = v[j];
        vector<pair<int, int>> srt;
        for (int i = 0; i < n; ++i) srt.push_back({a[i], i});
        sort(srt.begin(), srt.end());
        vector<int> p(n);
        for (int i = 0; i < n; ++i) p[srt[i].second] = i;
        /*for (int i = 0; i < n; ++i) cout << a[i] << " ";
        cout << '\n';
        for (int i = 0; i < n; ++i) cout << p[i] << " ";
        cout << '\n';*/
        int ans = 0;
        for (int i = 0; i < n; ++i) ans = max(ans, i - p[i]);
        ret.push_back(ans);
    }
    return ret;
}

#ifdef LOCAL
int main() {
    freopen("input.txt", "r", stdin);
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n, q;
    cin >> n >> q;
    vector<int> a(n);
    for (int i = 0; i < n; ++i) cin >> a[i];
    vector<int> x(q), v(q);
    for (int i = 0; i < q; ++i) cin >> x[i] >> v[i];
    auto s = countScans(a, x, v);
    for (int i = 0; i < q; ++i) cout << s[i] << '\n';
    return 0;
}
#endif

• Subtask 1: 17 / 17
• Subtask 2: 21 / 21
• Subtask 3: 0 / 22
• Subtask 4: 0 / 40