//#pragma GCC optimize ("O3")
//#pragma GCC target ("sse4")
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
#define ll long long
#define ld long double
#define ull unsigned long long
#define pb push_back
#define pob pop_back
#define int long long
#define int2 __int128_t
#define Shrek_Crush228 ios_base::sync_with_stdio(0), cin.tie(0);
#define F first
#define S second
#define FOR( i, x, n, d ) for( int i = x; i <= n; i += d )
#define FORR( i, x, n, d ) for( int i = x; i >= n; i -= d )
#define lb lower_bound
#define ub upper_bound
#define all(x) x.begin(), x.end()
#define no cout << "NO\n"
#define yes cout << "YES\n"
#define nep next_permutation
#define sigma signed
#define pii pair <int, int>
using namespace std;
string alp = "abcdefghijklmnopqrstuvwxyz";
string ae = "aoeiuy";
string nums = "123456789";
const int N = 1e5 + 123;
const int inf = 1e18;
const int MOD = 1e9 + 7;
const int MOD1 = 998244353;
const long long maxsum = 1e14;
int a[N], b[N], c[N], l, r, n, k, m, w, sum, sum1, y, ans1, mx = -inf, mn = inf, ind, ind1, pref[N], suf[N];
string s1, t;
ll ans, x;
template<class T> using ordered_multiset = tree<T, null_type, less_equal<T>, rb_tree_tag, tree_order_statistics_node_update>;
struct RT
{
int sum, l, r, ind;
};
int gcd( int a, int b )
{
return ( b ? gcd( b, a % b ) : a );
}
int lcm( int a, int b )
{
return a / gcd( a, b ) * b;
}
int bp( int a, int b, int m )
{
if( !b ) return 1;
if( b & 1 ) return bp( a, b >> 1, m ) * bp( a, b >> 1, m ) % m * a % m;
else return bp( a, b >> 1, m ) * bp( a, b >> 1, m ) % m;
}
struct po
{
int mn, sum, mx;
};
int xr, xg, xy;
void rec( int ind = 0, int cntr = 0, int cntg = 0, int cnty = 0, string ss = "" )
{
if( ind == n )
{
int rr, res = 0, ok = 1;
FOR( i, 1, n - 1, 1 )
{
if( ss[i] == ss[i - 1] ) ok = 0;
}
if( !ok ) return;
string s = s1;
FOR( i, 0, n - 1, 1 )
{
rr = i;
while( s[rr] != ss[i] && rr < n ) rr ++;
if( rr == n ) break;
while( rr > i ) swap( s[rr], s[rr - 1] ), rr --, res ++;
}
if( ans > res ) ans = res, t = ss;
return;
}
if( cntr + 1 <= xr ) rec( ind + 1, cntr + 1, cntg, cnty, ss + 'R' );
if( cntg + 1 <= xg ) rec( ind + 1, cntr, cntg + 1, cnty, ss + 'G' );
if( cnty + 1 <= xy ) rec( ind + 1, cntr, cntg, cnty + 1, ss + 'Y' );
}
void solve()
{
cin >> n >> s1;
FOR( i, 0, n - 1, 1 )
{
if( s1[i] == 'R' ) xr ++;
if( s1[i] == 'G' ) xg ++;
if( s1[i] == 'Y' ) xy ++;
}
ans = inf;
rec();
cout << ( ans == inf ? -1 : ans );// << '\n' << t;
}
sigma main()
{
//freopen("rmq.in", "r", stdin);
//freopen("rmq.out", "w", stdout);
Shrek_Crush228
int test = 1;
if( !test ) cin >> test;
while( test -- )
{
solve();
}
}
// solved by KluydQ
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
1 ms |
344 KB |
Output is correct |
5 |
Correct |
22 ms |
348 KB |
Output is correct |
6 |
Correct |
30 ms |
344 KB |
Output is correct |
7 |
Correct |
22 ms |
468 KB |
Output is correct |
8 |
Correct |
35 ms |
348 KB |
Output is correct |
9 |
Correct |
3 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
18 ms |
348 KB |
Output is correct |
12 |
Correct |
37 ms |
348 KB |
Output is correct |
13 |
Correct |
6 ms |
348 KB |
Output is correct |
14 |
Correct |
9 ms |
348 KB |
Output is correct |
15 |
Correct |
22 ms |
476 KB |
Output is correct |
16 |
Correct |
1 ms |
344 KB |
Output is correct |
17 |
Correct |
0 ms |
344 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
1 ms |
344 KB |
Output is correct |
5 |
Correct |
22 ms |
348 KB |
Output is correct |
6 |
Correct |
30 ms |
344 KB |
Output is correct |
7 |
Correct |
22 ms |
468 KB |
Output is correct |
8 |
Correct |
35 ms |
348 KB |
Output is correct |
9 |
Correct |
3 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
18 ms |
348 KB |
Output is correct |
12 |
Correct |
37 ms |
348 KB |
Output is correct |
13 |
Correct |
6 ms |
348 KB |
Output is correct |
14 |
Correct |
9 ms |
348 KB |
Output is correct |
15 |
Correct |
22 ms |
476 KB |
Output is correct |
16 |
Correct |
1 ms |
344 KB |
Output is correct |
17 |
Correct |
0 ms |
344 KB |
Output is correct |
18 |
Execution timed out |
1069 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 |
1064 ms |
604 KB |
Time limit exceeded |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
1 ms |
344 KB |
Output is correct |
5 |
Correct |
22 ms |
348 KB |
Output is correct |
6 |
Correct |
30 ms |
344 KB |
Output is correct |
7 |
Correct |
22 ms |
468 KB |
Output is correct |
8 |
Correct |
35 ms |
348 KB |
Output is correct |
9 |
Correct |
3 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
18 ms |
348 KB |
Output is correct |
12 |
Correct |
37 ms |
348 KB |
Output is correct |
13 |
Correct |
6 ms |
348 KB |
Output is correct |
14 |
Correct |
9 ms |
348 KB |
Output is correct |
15 |
Correct |
22 ms |
476 KB |
Output is correct |
16 |
Correct |
1 ms |
344 KB |
Output is correct |
17 |
Correct |
0 ms |
344 KB |
Output is correct |
18 |
Execution timed out |
1069 ms |
348 KB |
Time limit exceeded |
19 |
Halted |
0 ms |
0 KB |
- |