//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;
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';
// rec('A' , 0);
string pp = s;
sort(all(pp));
do{
bool oknt = 0;
for(int i = 0 ; i < n - 1 ; i++){
if(pp[i] == pp[i + 1]){
oknt= 1;
break;
}
}
if(!oknt){
q.pb(pp);
}
}while(next_permutation(all(pp)));
ans = INF;
s = '+' + s;
string qq = s;
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);
for(int p = j ; p > i ; p--){
swap(s[p] , s[p - 1]);
}
// cout << "ss = " << s << '\n';
ok = 1;
break;
}
}
if(!ok){
ans1 = INF;
break;
}
}
// cout << ans1 << '\n';
ans = min(ans , ans1);
}
if(ans == INF){
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
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:58:16: warning: unused variable 'ans1' [-Wunused-variable]
58 | int ans = 0 , ans1 = INF;
| ^~~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
344 KB |
Output is correct |
2 |
Correct |
1 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
3 ms |
464 KB |
Output is correct |
6 |
Correct |
6 ms |
604 KB |
Output is correct |
7 |
Correct |
4 ms |
348 KB |
Output is correct |
8 |
Correct |
6 ms |
776 KB |
Output is correct |
9 |
Correct |
1 ms |
344 KB |
Output is correct |
10 |
Correct |
1 ms |
348 KB |
Output is correct |
11 |
Correct |
3 ms |
348 KB |
Output is correct |
12 |
Correct |
7 ms |
708 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
2 ms |
348 KB |
Output is correct |
15 |
Correct |
4 ms |
556 KB |
Output is correct |
16 |
Correct |
0 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
344 KB |
Output is correct |
2 |
Correct |
1 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
3 ms |
464 KB |
Output is correct |
6 |
Correct |
6 ms |
604 KB |
Output is correct |
7 |
Correct |
4 ms |
348 KB |
Output is correct |
8 |
Correct |
6 ms |
776 KB |
Output is correct |
9 |
Correct |
1 ms |
344 KB |
Output is correct |
10 |
Correct |
1 ms |
348 KB |
Output is correct |
11 |
Correct |
3 ms |
348 KB |
Output is correct |
12 |
Correct |
7 ms |
708 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
2 ms |
348 KB |
Output is correct |
15 |
Correct |
4 ms |
556 KB |
Output is correct |
16 |
Correct |
0 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Execution timed out |
1074 ms |
348 KB |
Time limit exceeded |
19 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Execution timed out |
1092 ms |
348 KB |
Time limit exceeded |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
344 KB |
Output is correct |
2 |
Correct |
1 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
3 ms |
464 KB |
Output is correct |
6 |
Correct |
6 ms |
604 KB |
Output is correct |
7 |
Correct |
4 ms |
348 KB |
Output is correct |
8 |
Correct |
6 ms |
776 KB |
Output is correct |
9 |
Correct |
1 ms |
344 KB |
Output is correct |
10 |
Correct |
1 ms |
348 KB |
Output is correct |
11 |
Correct |
3 ms |
348 KB |
Output is correct |
12 |
Correct |
7 ms |
708 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
2 ms |
348 KB |
Output is correct |
15 |
Correct |
4 ms |
556 KB |
Output is correct |
16 |
Correct |
0 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Execution timed out |
1074 ms |
348 KB |
Time limit exceeded |
19 |
Halted |
0 ms |
0 KB |
- |