이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
//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);
// if(it == "=GRGRGRG"){
// cout << i << ' ' << j << '\n';
// }
// cout << "s = " << s << '\n';
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 > 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();
}
}
컴파일 시 표준 에러 (stderr) 메시지
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:113:9: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
113 | if(ans > s.size()){
| ~~~~^~~~~~~~~~
joi2019_ho_t3.cpp:58:16: warning: unused variable 'ans1' [-Wunused-variable]
58 | int ans = 0 , ans1 = INF;
| ^~~~
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