Submission #1104077

#	Time	Username	Problem	Language	Result	Execution time	Memory
1104077		Champ_Naman	Growing Vegetable is Fun 3 (JOI19_ho_t3)	C++17	15 / 100	1 ms	592 KiB

joi2019_ho_t3

#include<bits/stdc++.h>
using namespace std;
#define int long long
#define nl '\n'

inline void solve(){
	int n;
	cin>>n;
	string s;
	cin>>s;
	int a[n];
	int cnt0 = 0, cnt1 = 0, cnt2 = 0;
	for(int i=0; i<n; i++){
		if(s[i] == 'R') a[i] = 0, cnt0++;
		else if(s[i] == 'G') a[i] = 1, cnt1++;
		else a[i] = 2, cnt2++;
	}

	if(abs(cnt1-cnt0) > 1){
		cout<<-1;
		return;
	}

	int ans = 1e18;
	if(cnt1 >= cnt0){
		int b[n];
		for(int i=0; i<n; i++) b[i] = a[i];

		int subans = 0;
		for(int i=0; i<n; i++){
			int x = (i % 2 ? 0 : 1);
			if(b[i] == x) continue;

			for(int j=i+1; j<n; j++){
				if(b[j] != x) continue;

				for(int k=j; k>i; k--){
					swap(b[k], b[k-1]);
					subans++;
				}
				break;
			}
		}

		ans = subans;
	}
	if(cnt0 >= cnt1){
		int b[n];
		for(int i=0; i<n; i++) b[i] = a[i];

		int subans = 0;
		for(int i=0; i<n; i++){
			int x = (i % 2 ? 1 : 0);
			if(b[i] == x) continue;

			for(int j=i+1; j<n; j++){
				if(b[j] != x) continue;

				for(int k=j; k>i; k--){
					swap(b[k], b[k-1]);
					subans++;
				}
				break;
			}
		}

		ans = min(subans, ans);
	}

	cout<<ans<<nl;
}

signed main(){
	ios_base::sync_with_stdio(0);
	cin.tie(NULL);cout.tie(NULL);

	int t = 1;
	//cin>>t;
	while(t--) solve();

	return 0;
}

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