Submission #659168

#	Time	Username	Problem	Language	Result	Execution time	Memory
659168		Kenpar	Growing Vegetable is Fun 3 (JOI19_ho_t3)	C++17	0 / 100	1 ms	212 KiB

joi2019_ho_t3

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

#define ll long long
#define endl '\n'

const ll MOD = 1e9+7;
const ll INF = 1e16;
const ll MAX = 2 * 1e5;

void solve(){
	int n; cin>>n;

	string temp; cin>>temp;

	int r=0,g=0,y=0;
	vector<char> arr;
	for(char c : temp){
		if(c == 'R') r++;
		else if(c == 'G') g++;
		else y++;

		arr.push_back(c);
	}

	if(max(r, max(g, y)) > (n+1)/2){
		cout<<-1;
		return;
	}

	int ans = 0;
	for(int i = 2; i < n; i++){
		for(int j = 0; j < i-1; j++){
			if(arr[j] == arr[j+1] && arr[j] != arr[i]){
				ans+= i - j - 1;
				char c = arr[i];
				arr.erase(next(arr.begin(), i));
				arr.insert(next(arr.begin(),j+1), c);
			}
		}
	}

	for(int i = n-3; i >= 0; i--){
		for(int j = n-1; j > i+1; j--){
			if(arr[j] == arr[j-1] && arr[j] != arr[i]){
				ans+= j - i - 1;
				char c = arr[i];
				arr.erase(next(arr.begin(), i));
				arr.insert(next(arr.begin(),j-1), c);
			}
		}
	}

	cout<<ans;
}


int main()
{
	cin.tie(NULL);
	ios::sync_with_stdio(NULL);
	int t = 1;

	//cin >> t;

	while(t--){
		//cout<<"Case #"<<t<<" > "<<endl;
		solve();

		cout<<endl;
	}
}

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