Submission #819046

#	Time	Username	Problem	Language	Result	Execution time	Memory
819046		vjudge1	Growing Vegetable is Fun 3 (JOI19_ho_t3)	C++17	0 / 100	1 ms	324 KiB

joi2019_ho_t3

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

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    ll n;
    cin >> n;
    vector<char> C(n);
    ll r = 0, y = 0, g = 0, mx = (n + 1) / 2;
    for (int i = 0; i < n; i++)
    {
        cin >> C[i];
        if (C[i] == 'R')
        {
            r++;
        }
        else if (C[i] == 'Y')
        {
            y++;
        }
        else
        {
            g++;
        }
    }
    if (r > mx || y > mx || g > mx)
    {
        cout << -1;
    }
    else
    {
        // SUBTASK 3
        // RGRGRG atau GRGRGR
        ll pos1 = 0, pos2 = 1;
        ll ans1 = 0, ans2 = 0;
        for (int i = 0; i < n; i++)
        {
            if (C[i] == 'G')
            {
                ans1 += abs(i - pos1);
                ans2 += abs(i - pos2);
                pos1 += 2;
                pos2 += 2;
            }
        }
        cout << min(ans1, ans2);
        return 0;
    }
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 55
• Subtask 3: 0 / 15
• Subtask 4: 0 / 25