Submission #781705

#	Time	Username	Problem	Language	Result	Execution time	Memory
781705		vjudge1	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 lalala ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
#define endl "\n"
#define ll long long
#define pb push_back
#define N 200005
int n;
int arr[N];
int main(){
	lalala;
	cin>>n;
	string str;cin>>str;
	int r=0,g=0;
	for(int i=0;i<n;i++){
		if(str[i]=='G'){
			arr[i]=1;g++;}

		if(str[i]=='R'){
			arr[i]=2;r++;}
	}
	if(abs(g-r)>1){
		cout<<-1<<endl;
		return 0;
	}
	ll int cev=0;
	for(int i=0;i<n-1;i++){
		if(arr[i]==arr[i+1]){
			for(int j=i+1;j<n-1;j++){
				if(arr[j]==arr[j+1]&&arr[j]!=arr[i]){
					swap(arr[i],arr[j+1]);
					cev++;break;
				}
			}
		}
	}cout<<cev<<endl;


}

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