#define here cerr<<"===========================================\n"
#define dbg(x) cerr<<#x<<": "<<x<<endl;
#include <bits/stdc++.h>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>
#define ld double
#define ll int
#define llinf 1000000000 // 10^17
#define pb push_back
#define popb pop_back
#define fi first
#define sc second
#define endl '\n'
#define pll pair<ll,ll>
#define pld pair<ld,ld>
#define sz(a) (ll)(a.size())
#define all(a) a.begin(),a.end()
#define ceri(a,l,r) {cerr<<#a<<": ";for(ll i_ = l;i_<=r;i_++) cerr<<a[i_]<< " ";cerr<<endl;}
#define daj_mi_malo_vremena ios_base::sync_with_stdio(false);cerr.tie(0);cout.tie(0);cin.tie(0);
using namespace std;
using namespace __gnu_pbds;
/*
ll add(ll x,ll y){
x+=y;
if(x<0){
x%=mod;
x+=mod;
}else{
if(x>=mod) x%=mod;
}
return x;
}
ll mul(ll a,ll b){
ll ans = (a*b)%mod;
if(ans<0) ans+=mod;
return ans;
}
typedef tree<int,null_type,less<ll>,rb_tree_tag,tree_order_statistics_node_update> ordered_set;
typedef tree<int,null_type,less_equal<ll>,rb_tree_tag,tree_order_statistics_node_update> ordered_multiset;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
ll rnd(ll l,ll r){
return uniform_int_distribution<ll>(l,r)(rng);
}
*/
#define maxn 405
ll n;
ll a[maxn];
ll dp[maxn][maxn][maxn][4];
bool bio[maxn][maxn][maxn][4];
ll sz[4];
ll pos[4][maxn];
ll calc[4][4][maxn][maxn];
ll reshi(ll r,ll g,ll y,ll last){
if(r+g+y==0) return 0;
if(bio[r][g][y][last]) return dp[r][g][y][last];
ll &ans = dp[r][g][y][last];
bio[r][g][y][last] = 1;
ans = llinf;
if(r&&last!=1) ans = min(ans,reshi(r-1,g,y,1)+calc[1][2][r][g]+calc[1][3][r][y]);
if(g&&last!=2) ans = min(ans,reshi(r,g-1,y,2)+calc[2][1][g][r]+calc[2][3][g][y]);
if(y&&last!=3) ans = min(ans,reshi(r,g,y-1,3)+calc[3][1][y][r]+calc[3][2][y][g]);
return ans;
}
int main(){
daj_mi_malo_vremena
cin >> n; string s; cin >> s;
for(ll i = 1;i<=n;i++){
if(s[i-1]=='R') pos[1][++sz[1]] = i;
if(s[i-1]=='G') pos[2][++sz[2]] = i;
if(s[i-1]=='Y') pos[3][++sz[3]] = i;
}
for(ll e = 1;e<=3;e++){
for(ll f = 1;f<=3;f++){
if(e==f) continue;
for(ll i = 1;i<=sz[e];i++){
ll cur = 0;
for(ll j = sz[f];j>=1;j--){
calc[e][f][i][j] = cur;
if(pos[e][i]>pos[f][j]) cur++;
}
calc[e][f][i][0] = cur;
}
}
}
ll ans = llinf;
ans = min(ans,reshi(sz[1],sz[2],sz[3],1));
ans = min(ans,reshi(sz[1],sz[2],sz[3],2));
ans = min(ans,reshi(sz[1],sz[2],sz[3],3));
if(ans==llinf) ans = -1;
cout<<ans<<endl;
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
0 ms |
340 KB |
Output is correct |
3 |
Correct |
0 ms |
340 KB |
Output is correct |
4 |
Correct |
1 ms |
456 KB |
Output is correct |
5 |
Correct |
1 ms |
588 KB |
Output is correct |
6 |
Correct |
1 ms |
592 KB |
Output is correct |
7 |
Correct |
1 ms |
596 KB |
Output is correct |
8 |
Correct |
1 ms |
596 KB |
Output is correct |
9 |
Correct |
1 ms |
596 KB |
Output is correct |
10 |
Correct |
1 ms |
468 KB |
Output is correct |
11 |
Correct |
1 ms |
596 KB |
Output is correct |
12 |
Correct |
1 ms |
596 KB |
Output is correct |
13 |
Correct |
1 ms |
468 KB |
Output is correct |
14 |
Correct |
1 ms |
596 KB |
Output is correct |
15 |
Correct |
1 ms |
468 KB |
Output is correct |
16 |
Correct |
1 ms |
468 KB |
Output is correct |
17 |
Correct |
1 ms |
340 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
0 ms |
340 KB |
Output is correct |
3 |
Correct |
0 ms |
340 KB |
Output is correct |
4 |
Correct |
1 ms |
456 KB |
Output is correct |
5 |
Correct |
1 ms |
588 KB |
Output is correct |
6 |
Correct |
1 ms |
592 KB |
Output is correct |
7 |
Correct |
1 ms |
596 KB |
Output is correct |
8 |
Correct |
1 ms |
596 KB |
Output is correct |
9 |
Correct |
1 ms |
596 KB |
Output is correct |
10 |
Correct |
1 ms |
468 KB |
Output is correct |
11 |
Correct |
1 ms |
596 KB |
Output is correct |
12 |
Correct |
1 ms |
596 KB |
Output is correct |
13 |
Correct |
1 ms |
468 KB |
Output is correct |
14 |
Correct |
1 ms |
596 KB |
Output is correct |
15 |
Correct |
1 ms |
468 KB |
Output is correct |
16 |
Correct |
1 ms |
468 KB |
Output is correct |
17 |
Correct |
1 ms |
340 KB |
Output is correct |
18 |
Correct |
2 ms |
3276 KB |
Output is correct |
19 |
Correct |
2 ms |
2760 KB |
Output is correct |
20 |
Correct |
2 ms |
3156 KB |
Output is correct |
21 |
Correct |
2 ms |
3412 KB |
Output is correct |
22 |
Correct |
2 ms |
2388 KB |
Output is correct |
23 |
Correct |
2 ms |
3024 KB |
Output is correct |
24 |
Correct |
2 ms |
2260 KB |
Output is correct |
25 |
Correct |
1 ms |
1352 KB |
Output is correct |
26 |
Correct |
1 ms |
1492 KB |
Output is correct |
27 |
Correct |
2 ms |
3412 KB |
Output is correct |
28 |
Correct |
2 ms |
3284 KB |
Output is correct |
29 |
Correct |
2 ms |
3152 KB |
Output is correct |
30 |
Correct |
2 ms |
3152 KB |
Output is correct |
31 |
Correct |
2 ms |
2772 KB |
Output is correct |
32 |
Correct |
2 ms |
3284 KB |
Output is correct |
33 |
Correct |
1 ms |
1740 KB |
Output is correct |
34 |
Correct |
1 ms |
2004 KB |
Output is correct |
35 |
Correct |
2 ms |
3284 KB |
Output is correct |
36 |
Correct |
2 ms |
2772 KB |
Output is correct |
37 |
Correct |
2 ms |
2388 KB |
Output is correct |
38 |
Correct |
2 ms |
2892 KB |
Output is correct |
39 |
Correct |
2 ms |
3284 KB |
Output is correct |
40 |
Correct |
0 ms |
596 KB |
Output is correct |
41 |
Correct |
1 ms |
1236 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
340 KB |
Output is correct |
2 |
Correct |
3 ms |
6472 KB |
Output is correct |
3 |
Correct |
3 ms |
6476 KB |
Output is correct |
4 |
Correct |
3 ms |
6484 KB |
Output is correct |
5 |
Correct |
3 ms |
6484 KB |
Output is correct |
6 |
Correct |
3 ms |
6484 KB |
Output is correct |
7 |
Correct |
3 ms |
6484 KB |
Output is correct |
8 |
Correct |
3 ms |
6484 KB |
Output is correct |
9 |
Correct |
3 ms |
6484 KB |
Output is correct |
10 |
Correct |
3 ms |
6484 KB |
Output is correct |
11 |
Correct |
3 ms |
6476 KB |
Output is correct |
12 |
Correct |
2 ms |
3540 KB |
Output is correct |
13 |
Correct |
2 ms |
4564 KB |
Output is correct |
14 |
Correct |
3 ms |
5460 KB |
Output is correct |
15 |
Correct |
3 ms |
6484 KB |
Output is correct |
16 |
Correct |
3 ms |
6484 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
0 ms |
340 KB |
Output is correct |
3 |
Correct |
0 ms |
340 KB |
Output is correct |
4 |
Correct |
1 ms |
456 KB |
Output is correct |
5 |
Correct |
1 ms |
588 KB |
Output is correct |
6 |
Correct |
1 ms |
592 KB |
Output is correct |
7 |
Correct |
1 ms |
596 KB |
Output is correct |
8 |
Correct |
1 ms |
596 KB |
Output is correct |
9 |
Correct |
1 ms |
596 KB |
Output is correct |
10 |
Correct |
1 ms |
468 KB |
Output is correct |
11 |
Correct |
1 ms |
596 KB |
Output is correct |
12 |
Correct |
1 ms |
596 KB |
Output is correct |
13 |
Correct |
1 ms |
468 KB |
Output is correct |
14 |
Correct |
1 ms |
596 KB |
Output is correct |
15 |
Correct |
1 ms |
468 KB |
Output is correct |
16 |
Correct |
1 ms |
468 KB |
Output is correct |
17 |
Correct |
1 ms |
340 KB |
Output is correct |
18 |
Correct |
2 ms |
3276 KB |
Output is correct |
19 |
Correct |
2 ms |
2760 KB |
Output is correct |
20 |
Correct |
2 ms |
3156 KB |
Output is correct |
21 |
Correct |
2 ms |
3412 KB |
Output is correct |
22 |
Correct |
2 ms |
2388 KB |
Output is correct |
23 |
Correct |
2 ms |
3024 KB |
Output is correct |
24 |
Correct |
2 ms |
2260 KB |
Output is correct |
25 |
Correct |
1 ms |
1352 KB |
Output is correct |
26 |
Correct |
1 ms |
1492 KB |
Output is correct |
27 |
Correct |
2 ms |
3412 KB |
Output is correct |
28 |
Correct |
2 ms |
3284 KB |
Output is correct |
29 |
Correct |
2 ms |
3152 KB |
Output is correct |
30 |
Correct |
2 ms |
3152 KB |
Output is correct |
31 |
Correct |
2 ms |
2772 KB |
Output is correct |
32 |
Correct |
2 ms |
3284 KB |
Output is correct |
33 |
Correct |
1 ms |
1740 KB |
Output is correct |
34 |
Correct |
1 ms |
2004 KB |
Output is correct |
35 |
Correct |
2 ms |
3284 KB |
Output is correct |
36 |
Correct |
2 ms |
2772 KB |
Output is correct |
37 |
Correct |
2 ms |
2388 KB |
Output is correct |
38 |
Correct |
2 ms |
2892 KB |
Output is correct |
39 |
Correct |
2 ms |
3284 KB |
Output is correct |
40 |
Correct |
0 ms |
596 KB |
Output is correct |
41 |
Correct |
1 ms |
1236 KB |
Output is correct |
42 |
Correct |
0 ms |
340 KB |
Output is correct |
43 |
Correct |
3 ms |
6472 KB |
Output is correct |
44 |
Correct |
3 ms |
6476 KB |
Output is correct |
45 |
Correct |
3 ms |
6484 KB |
Output is correct |
46 |
Correct |
3 ms |
6484 KB |
Output is correct |
47 |
Correct |
3 ms |
6484 KB |
Output is correct |
48 |
Correct |
3 ms |
6484 KB |
Output is correct |
49 |
Correct |
3 ms |
6484 KB |
Output is correct |
50 |
Correct |
3 ms |
6484 KB |
Output is correct |
51 |
Correct |
3 ms |
6484 KB |
Output is correct |
52 |
Correct |
3 ms |
6476 KB |
Output is correct |
53 |
Correct |
2 ms |
3540 KB |
Output is correct |
54 |
Correct |
2 ms |
4564 KB |
Output is correct |
55 |
Correct |
3 ms |
5460 KB |
Output is correct |
56 |
Correct |
3 ms |
6484 KB |
Output is correct |
57 |
Correct |
3 ms |
6484 KB |
Output is correct |
58 |
Correct |
147 ms |
109624 KB |
Output is correct |
59 |
Correct |
139 ms |
130796 KB |
Output is correct |
60 |
Correct |
135 ms |
123020 KB |
Output is correct |
61 |
Correct |
144 ms |
120508 KB |
Output is correct |
62 |
Correct |
8 ms |
14292 KB |
Output is correct |
63 |
Correct |
12 ms |
23708 KB |
Output is correct |
64 |
Correct |
50 ms |
72008 KB |
Output is correct |
65 |
Correct |
71 ms |
101988 KB |
Output is correct |
66 |
Correct |
136 ms |
121636 KB |
Output is correct |
67 |
Correct |
130 ms |
115956 KB |
Output is correct |
68 |
Correct |
138 ms |
124780 KB |
Output is correct |
69 |
Correct |
136 ms |
121136 KB |
Output is correct |
70 |
Correct |
137 ms |
128300 KB |
Output is correct |
71 |
Correct |
135 ms |
117452 KB |
Output is correct |
72 |
Correct |
10 ms |
16724 KB |
Output is correct |
73 |
Correct |
2 ms |
4684 KB |
Output is correct |