Submission #959470

#	Time	Username	Problem	Language	Result	Execution time	Memory
959470		OIaspirant2307	JJOOII 2 (JOI20_ho_t2)	C++17	1 / 100	2017 ms	500 KiB

ho_t2

#include <iostream>
using namespace std;
#define int long long

int n, k;
string s;
const int inf = 1e10;

int get(int i, int j)
{
    int cnt[3] = {0, 0, 0};
    int ans = 0;
    for (int x = i; x <= j; x++)
    {
        if (cnt[0] < k && s[x] == 'J')
        {
            cnt[0]++;
        }
        else if (cnt[0] == k && cnt[1] < k && s[x] == 'O')
        {
            cnt[1]++;
        }
        else if (cnt[1] == k && cnt[2] < k && s[x] == 'I')
        {
            cnt[2]++;
        }
        else
        {
            ans++;
        }
    }
    if (cnt[0] == k && cnt[1] == k && cnt[2] == k)
    {
        return ans;
    }
    return -1;
}

signed main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(NULL);
    cout.tie(NULL);
    cin >> n >> k >> s;
    int sub = 3 * k;
    int m = inf;
    for (int i = 0; i < n; i++)
    {
        for (int j = (i + sub) - 1; j < n; j++)
        {
            int ans = get(i, j);
            if (ans == -1)
            {
                continue;
            }
            m = min(ans, m);
        }
    }
    cout << (m == inf ? -1 : m) << '\n';
}

• Subtask 1: 1 / 1
• Subtask 2: 0 / 12
• Subtask 3: 0 / 87