Submission #574925

#	Time	Username	Problem	Language	Result	Execution time	Memory
574925		MateGiorbelidze	Growing Vegetable is Fun 3 (JOI19_ho_t3)	C++14	15 / 100	2 ms	1236 KiB

joi2019_ho_t3

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

#define ll long long
#define ff first
#define sc second
#define pb push_back
#define in insert


int main () {
	ios::sync_with_stdio(false);
    cin.tie(nullptr);
	
	ll n; cin>>n;
	
	string s; cin>>s;
	
	ll r = 0 , g = 0, y = 0;
	
	ll rp[4001], rg[4001], ry[4001];
	
	for (int i = 0; i < n; i++) {
		if (s[i] == 'R') {
			r++;
			rp[r] = i + 1;
		}
		if (s[i] == 'G') {
			g++;
			rg[g] = i + 1;
		}
		if (s[i] == 'Y') {
			y++;
			ry[y] = i + 1;
		}
	}
	
	ll d[r + 1][g + 1][y + 1][3];

	
	//cout<<r<<" "<<g<<" "<<y;	
	
	for (int i = 0; i <= r; i++)
		for (int j = 0; j <= g; j++)
			for (int k = 0; k <= y; k++)
				d[i][j][k][0] = d[i][j][k][1] = d[i][j][k][2] = INT_MAX;
				
	d[0][0][0][0] = d[0][0][0][1] = d[0][0][0][2] = 0;			
				
	for (int i = 0; i <= r; i++)
		for (int j = 0; j <= g; j++)
			for (int k = 0; k <= y; k++) {
				
				if (k != 0) {
					d[i][j][k][2] = min(d[i][j][k - 1][1] , d[i][j][k - 1][0]);
					d[i][j][k][2] += abs(ry[k] - i - j - k);
				}
				
				if (j != 0) {
					d[i][j][k][1] = min(d[i][j - 1][k][2] , d[i][j - 1][k][0]);
					d[i][j][k][1] += abs(rg[j] - i - j - k);
				}
				
				if (i != 0) {
					d[i][j][k][0] = min(d[i - 1][j][k][1] , d[i - 1][j][k][2]);
					d[i][j][k][0] += abs(rp[i] - i - j - k);
				}
				
				//cout<<i<<" "<<j<<" "<<k<<'\n';
				//cout<<d[i][j][k][0]<<" "<<d[i][j][k][1]<<" "<<d[i][j][k][2]<<'\n';
				//cout<<'\n';
			}			
	
	ll mn = min( {d[r][g][y][1], d[r][g][y][0], d[r][g][y][2]});
	
	if (mn != INT_MAX)cout<<mn / 2;
	else cout<<-1;
		
}

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