Submission #1089318

#	Time	Username	Problem	Language	Result	Execution time	Memory
1089318		vjudge1	Growing Vegetable is Fun 3 (JOI19_ho_t3)	C++17	0 / 100	1 ms	604 KiB

joi2019_ho_t3

//don't copy pls)
/*TAAK ZDES NADO RECURSIU PISAT*/

//I'm not in the danger i am the DANGER
#include "bits/stdc++.h"
#include <ext/pb_ds/assoc_container.hpp>
#define ll long long
#define pb push_back
// #define int long long
#define F first
#define S second
#define all(x) (x).begin(), (x).end()
#define pii pair<int,int>
#define sigma signed
using namespace std;
using namespace __gnu_pbds;
const int N = 3e5 + 5;
int mod = 1e9 + 7;
const int INF = 1e9;
int n;
int cnt1 = 0 , cnt2 = 0 , cnt3 = 0;
string s,t;
vector <string> q;
void rec(char last , int sz){
	if(sz == n){
		// cout << t << '\n';
		q.pb(t);
		return;
	}
	int ans = 0;
	if(last != 'R' && cnt1){
		t.pb('R');
		// cout << t << '\n';
		cnt1--;
		rec('R' , sz + 1);
		cnt1++;
		t.pop_back();
	}
	if(last != 'G' && cnt2){
		t.pb('G');
		// cout << t << '\n';
		cnt2--;
		rec('G' , sz + 1);
		cnt2++;
		t.pop_back();
	}
	if(last != 'Y' && cnt3){
		t.pb('Y');
		// cout << t << '\n';
		cnt3--;
		rec('Y' , sz + 1);
		cnt3++;
		t.pop_back();
	}
}
void Gold(){
	cin >> n >> s;
	s = '+' + s;
	int ans = 0 , ans1 = INF;
	for(auto it : s){
		if(it == 'R') cnt1++;
		else if(it == 'G') cnt2++;
		if(it == 'Y') cnt3++;
	}
	// cout << cnt1 << ' ' << cnt2 <<  ' ' << cnt3 << '\n';
	string qq = s;
	rec('A' , 0);
	ans = INF;
	for(auto it : q){
		s = qq;
		int ans1 = 0;
		it = '=' + it;
		// cout << it << '\n';
		for(int i = 1 ; i <= n ; i++){
			bool ok = 0;
			for(int j = i ; j <= n ; j++){
				if(it[i] == s[j]){
					ans1 += (j - i);
					swap(s[i] , s[j]);
					ok = 1;
					break;
				}
			}
			if(!ok){
				ans1 = INF;
				break;
			}
		}
		ans = min(ans , ans1);
	}
	if(ans > s.size()){
		cout << "-1\n";
		return;
	}
	cout << ans;
}
sigma main(){
	//freopen("txt.in","r",stdin);
	//freopen("txt.out","w",stdout);
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	int TT = 1;
	// cin >> TT;
	for(int i = 1 ; i <= TT ; i++){
		//cout << "Case " << i << ": ";
		Gold();
	}
}

Compilation message (stderr)

joi2019_ho_t3.cpp: In function 'void rec(char, int)':
joi2019_ho_t3.cpp:30:6: warning: unused variable 'ans' [-Wunused-variable]
   30 |  int ans = 0;
      |      ^~~
joi2019_ho_t3.cpp: In function 'void Gold()':
joi2019_ho_t3.cpp:91:9: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   91 |  if(ans > s.size()){
      |     ~~~~^~~~~~~~~~
joi2019_ho_t3.cpp:59:16: warning: unused variable 'ans1' [-Wunused-variable]
   59 |  int ans = 0 , ans1 = INF;
      |                ^~~~

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