Submission #442906

#	Time	Username	Problem	Language	Result	Execution time	Memory
442906		prvocislo	Matching (CEOI11_mat)	C++17	63 / 100	2080 ms	23252 KiB

mat

#include <bits/stdc++.h>
using namespace std;

const int maxn = 1e6 + 5, inf = 1e9 + 5;
int mi[maxn*2];
int mini(int l, int r)
{
    int ans = inf;
    for (l += maxn, r += maxn + 1; l < r; l >>= 1, r >>= 1)
    {
        if (l&1) ans = min(ans, mi[l++]);
        if (r&1) ans = min(ans, mi[--r]);
    }
    return ans;
}
int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0); 
    int n, m;
    cin >> n >> m;
    vector<int> s(n), h(m);
    for (int i = 0; i < n; i++) cin >> s[i], s[i]--;
    for (int i = 0; i < m; i++) cin >> h[i], mi[maxn + i] = h[i];
    for (int i = maxn-1; i > 0; i--) mi[i] = min(mi[i<<1], mi[(i<<1)|1]);
    vector<int> ans;
    for (int i = 0; i + n - 1 < m; i++)
    {
        int m1 = mini(i, i + s[0] - 1), m2 = h[i + s[0]], m3 = mini(i + s[0] + 1, i + n - 1);
        if (m1 < m2 || m3 < m2) continue;
        bool ok = true;
        for (int j = 1; j < n; j++)
        {
            //cout << i+s[j-1] << " " << i+s[j] << endl;
            if (h[i+s[j-1]] > h[i+s[j]])
            {
                ok = false;
                break;
            }
        }
        if (ok) ans.push_back(i+1);
    }
    cout << ans.size() << "\n";
    for (int i : ans) cout << i << " ";
    cout << "\n";
    return 0;
}

• Subtask 1: 9 / 9
• Subtask 2: 9 / 9
• Subtask 3: 9 / 9
• Subtask 4: 9 / 9
• Subtask 5: 9 / 9
• Subtask 6: 9 / 9
• Subtask 7: 9 / 9
• Subtask 8: 0 / 9
• Subtask 9: 0 / 8
• Subtask 10: 0 / 10
• Subtask 11: 0 / 10