#pragma GCC optimize ("O3")
#pragma GCC target ("sse4")
#include <bits/stdc++.h>
#define FIXED_FLOAT(x) std::fixed <<std::setprecision(20) << (x)
#define all(v) (v).begin(), (v).end()
using namespace std;
#define forn(i,n) for (int i = 0; i < (n); ++i)
#define rforn(i, n) for(int i = (n) - 1;i >= 0;--i)
#define sz(x) (int)x.size()
#define ff first
#define se second
#define mp make_pair
using ll = long long;
int mod = (ll)1e9 + 7;
const int INF = 1e9 + 1;
const int N = 405;
const double eps = 1e-7;
const long long inf = 1e18;
template <class T> using V = vector<T>;
template <class T> using VV = V<V<T>>;
template<class T, size_t SZ> using AR = array<T, SZ>;
template<class T> using PR = pair<T, T>;
template <typename XPAX>
bool ckma(XPAX &x, XPAX y) {
return (x < y ? x = y, 1 : 0);
}
template <typename XPAX>
bool ckmi(XPAX &x, XPAX y) {
return (x > y ? x = y, 1 : 0);
}
void __print(int x) {cerr << x;}
void __print(long x) {cerr << x;}
void __print(long long x) {cerr << x;}
void __print(unsigned x) {cerr << x;}
void __print(unsigned long x) {cerr << x;}
void __print(unsigned long long x) {cerr << x;}
void __print(float x) {cerr << x;}
void __print(double x) {cerr << x;}
void __print(long double x) {cerr << x;}
void __print(char x) {cerr << '\'' << x << '\'';}
void __print(const char *x) {cerr << '\"' << x << '\"';}
void __print(const string &x) {cerr << '\"' << x << '\"';}
void __print(bool x) {cerr << (x ? "true" : "false");}
template<typename T, typename V>
void __print(const pair<T, V> &x) {cerr << '{'; __print(x.first); cerr << ','; __print(x.second); cerr << '}';}
template<typename T>
void __print(const T &x) {int f = 0; cerr << '{'; for (auto &i: x) cerr << (f++ ? "," : ""), __print(i); cerr << "}";}
void _print() {cerr << "]\n";}
template <typename T, typename... V>
void _print(T t, V... v) {__print(t); if (sizeof...(v)) cerr << ", "; _print(v...);}
#define debug(x...) cerr << "[" << #x << "] = ["; _print(x)
int n;
string s;
int dp[N][N][N][4];
int ca[N], cb[N], cc[N];
void solve() {
cin >> n >> s;
vector<int> a(n);
vector<int> pos[4];
for(int j = 0;j < n;++j) {
a[j] = (s[j] == 'R' ? 0 : (s[j] == 'G' ? 1 : 2));
pos[a[j]].push_back(j);
}
for(int j = 0;j < n;++j) {
if(j)ca[j] = ca[j-1], cb[j] = cb[j-1], cc[j] = cc[j-1];
if(a[j] == 0)ca[j]++;
else if(a[j] == 1) cb[j]++;
else cc[j]++;
}
int A = sz(pos[0]), B = sz(pos[1]), C = sz(pos[2]);
forn(i, A+1) forn(j, B+1) forn(k, C+1) forn(l, 3) dp[i][j][k][l] = INF;
forn(i, 3) dp[0][0][0][i] = 0;
forn(i, A+1) forn(j, B + 1) forn(k, C+1) forn(l, 3) {
if(dp[i][j][k][l] == INF)continue;
//int x = i+j+k;
if(i<A && l != 0)ckmi(dp[i+1][j][k][0], dp[i][j][k][l]+max(0, cb[pos[0][i]]-j)+max(0,cc[pos[0][i]]-k));
if(j<B && l != 1)ckmi(dp[i][j+1][k][1], dp[i][j][k][l]+max(0, ca[pos[1][j]]-i)+max(0, cc[pos[1][j]]-k));
if(k<C && l != 2)ckmi(dp[i][j][k+1][2], dp[i][j][k][l]+max(0, ca[pos[2][k]]-i)+max(0, cb[pos[2][k]]-j));
}
int res = INF;
forn(i, 3) {
//debug(dp[A][B][C][i]);
ckmi(res, dp[A][B][C][i]);
}
cout << (res == INF ? -1 : res) << '\n';
}
void test_case() {
int t;
cin >> t;
forn(p, t) {
//cout << "Case #" << p + 1 << ": ";
solve();
}
}
int main() {
ios::sync_with_stdio(false);
cin.tie(0);
solve();
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
0 ms |
340 KB |
Output is correct |
3 |
Correct |
0 ms |
212 KB |
Output is correct |
4 |
Correct |
1 ms |
340 KB |
Output is correct |
5 |
Correct |
0 ms |
340 KB |
Output is correct |
6 |
Correct |
0 ms |
468 KB |
Output is correct |
7 |
Correct |
1 ms |
468 KB |
Output is correct |
8 |
Correct |
1 ms |
468 KB |
Output is correct |
9 |
Correct |
0 ms |
596 KB |
Output is correct |
10 |
Correct |
1 ms |
596 KB |
Output is correct |
11 |
Correct |
0 ms |
468 KB |
Output is correct |
12 |
Correct |
1 ms |
468 KB |
Output is correct |
13 |
Correct |
0 ms |
340 KB |
Output is correct |
14 |
Correct |
1 ms |
468 KB |
Output is correct |
15 |
Correct |
1 ms |
340 KB |
Output is correct |
16 |
Correct |
1 ms |
468 KB |
Output is correct |
17 |
Correct |
0 ms |
212 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
0 ms |
340 KB |
Output is correct |
3 |
Correct |
0 ms |
212 KB |
Output is correct |
4 |
Correct |
1 ms |
340 KB |
Output is correct |
5 |
Correct |
0 ms |
340 KB |
Output is correct |
6 |
Correct |
0 ms |
468 KB |
Output is correct |
7 |
Correct |
1 ms |
468 KB |
Output is correct |
8 |
Correct |
1 ms |
468 KB |
Output is correct |
9 |
Correct |
0 ms |
596 KB |
Output is correct |
10 |
Correct |
1 ms |
596 KB |
Output is correct |
11 |
Correct |
0 ms |
468 KB |
Output is correct |
12 |
Correct |
1 ms |
468 KB |
Output is correct |
13 |
Correct |
0 ms |
340 KB |
Output is correct |
14 |
Correct |
1 ms |
468 KB |
Output is correct |
15 |
Correct |
1 ms |
340 KB |
Output is correct |
16 |
Correct |
1 ms |
468 KB |
Output is correct |
17 |
Correct |
0 ms |
212 KB |
Output is correct |
18 |
Correct |
1 ms |
2260 KB |
Output is correct |
19 |
Correct |
1 ms |
1876 KB |
Output is correct |
20 |
Correct |
1 ms |
2260 KB |
Output is correct |
21 |
Correct |
1 ms |
2388 KB |
Output is correct |
22 |
Correct |
1 ms |
1620 KB |
Output is correct |
23 |
Correct |
1 ms |
2188 KB |
Output is correct |
24 |
Correct |
1 ms |
1620 KB |
Output is correct |
25 |
Correct |
2 ms |
3924 KB |
Output is correct |
26 |
Correct |
2 ms |
4180 KB |
Output is correct |
27 |
Correct |
2 ms |
3028 KB |
Output is correct |
28 |
Correct |
2 ms |
2388 KB |
Output is correct |
29 |
Correct |
1 ms |
2260 KB |
Output is correct |
30 |
Correct |
1 ms |
2260 KB |
Output is correct |
31 |
Correct |
1 ms |
2004 KB |
Output is correct |
32 |
Correct |
1 ms |
2388 KB |
Output is correct |
33 |
Correct |
2 ms |
3924 KB |
Output is correct |
34 |
Correct |
2 ms |
3572 KB |
Output is correct |
35 |
Correct |
1 ms |
2644 KB |
Output is correct |
36 |
Correct |
1 ms |
1876 KB |
Output is correct |
37 |
Correct |
1 ms |
1748 KB |
Output is correct |
38 |
Correct |
1 ms |
2132 KB |
Output is correct |
39 |
Correct |
1 ms |
2260 KB |
Output is correct |
40 |
Correct |
1 ms |
340 KB |
Output is correct |
41 |
Correct |
1 ms |
2132 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
340 KB |
Output is correct |
2 |
Correct |
59 ms |
162872 KB |
Output is correct |
3 |
Correct |
60 ms |
161996 KB |
Output is correct |
4 |
Correct |
62 ms |
162892 KB |
Output is correct |
5 |
Correct |
60 ms |
162876 KB |
Output is correct |
6 |
Correct |
60 ms |
162880 KB |
Output is correct |
7 |
Correct |
62 ms |
162120 KB |
Output is correct |
8 |
Correct |
71 ms |
162040 KB |
Output is correct |
9 |
Correct |
68 ms |
161228 KB |
Output is correct |
10 |
Correct |
63 ms |
162892 KB |
Output is correct |
11 |
Correct |
60 ms |
162836 KB |
Output is correct |
12 |
Correct |
17 ms |
44076 KB |
Output is correct |
13 |
Correct |
31 ms |
77140 KB |
Output is correct |
14 |
Correct |
49 ms |
111364 KB |
Output is correct |
15 |
Correct |
65 ms |
162864 KB |
Output is correct |
16 |
Correct |
63 ms |
162852 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
0 ms |
340 KB |
Output is correct |
3 |
Correct |
0 ms |
212 KB |
Output is correct |
4 |
Correct |
1 ms |
340 KB |
Output is correct |
5 |
Correct |
0 ms |
340 KB |
Output is correct |
6 |
Correct |
0 ms |
468 KB |
Output is correct |
7 |
Correct |
1 ms |
468 KB |
Output is correct |
8 |
Correct |
1 ms |
468 KB |
Output is correct |
9 |
Correct |
0 ms |
596 KB |
Output is correct |
10 |
Correct |
1 ms |
596 KB |
Output is correct |
11 |
Correct |
0 ms |
468 KB |
Output is correct |
12 |
Correct |
1 ms |
468 KB |
Output is correct |
13 |
Correct |
0 ms |
340 KB |
Output is correct |
14 |
Correct |
1 ms |
468 KB |
Output is correct |
15 |
Correct |
1 ms |
340 KB |
Output is correct |
16 |
Correct |
1 ms |
468 KB |
Output is correct |
17 |
Correct |
0 ms |
212 KB |
Output is correct |
18 |
Correct |
1 ms |
2260 KB |
Output is correct |
19 |
Correct |
1 ms |
1876 KB |
Output is correct |
20 |
Correct |
1 ms |
2260 KB |
Output is correct |
21 |
Correct |
1 ms |
2388 KB |
Output is correct |
22 |
Correct |
1 ms |
1620 KB |
Output is correct |
23 |
Correct |
1 ms |
2188 KB |
Output is correct |
24 |
Correct |
1 ms |
1620 KB |
Output is correct |
25 |
Correct |
2 ms |
3924 KB |
Output is correct |
26 |
Correct |
2 ms |
4180 KB |
Output is correct |
27 |
Correct |
2 ms |
3028 KB |
Output is correct |
28 |
Correct |
2 ms |
2388 KB |
Output is correct |
29 |
Correct |
1 ms |
2260 KB |
Output is correct |
30 |
Correct |
1 ms |
2260 KB |
Output is correct |
31 |
Correct |
1 ms |
2004 KB |
Output is correct |
32 |
Correct |
1 ms |
2388 KB |
Output is correct |
33 |
Correct |
2 ms |
3924 KB |
Output is correct |
34 |
Correct |
2 ms |
3572 KB |
Output is correct |
35 |
Correct |
1 ms |
2644 KB |
Output is correct |
36 |
Correct |
1 ms |
1876 KB |
Output is correct |
37 |
Correct |
1 ms |
1748 KB |
Output is correct |
38 |
Correct |
1 ms |
2132 KB |
Output is correct |
39 |
Correct |
1 ms |
2260 KB |
Output is correct |
40 |
Correct |
1 ms |
340 KB |
Output is correct |
41 |
Correct |
1 ms |
2132 KB |
Output is correct |
42 |
Correct |
0 ms |
340 KB |
Output is correct |
43 |
Correct |
59 ms |
162872 KB |
Output is correct |
44 |
Correct |
60 ms |
161996 KB |
Output is correct |
45 |
Correct |
62 ms |
162892 KB |
Output is correct |
46 |
Correct |
60 ms |
162876 KB |
Output is correct |
47 |
Correct |
60 ms |
162880 KB |
Output is correct |
48 |
Correct |
62 ms |
162120 KB |
Output is correct |
49 |
Correct |
71 ms |
162040 KB |
Output is correct |
50 |
Correct |
68 ms |
161228 KB |
Output is correct |
51 |
Correct |
63 ms |
162892 KB |
Output is correct |
52 |
Correct |
60 ms |
162836 KB |
Output is correct |
53 |
Correct |
17 ms |
44076 KB |
Output is correct |
54 |
Correct |
31 ms |
77140 KB |
Output is correct |
55 |
Correct |
49 ms |
111364 KB |
Output is correct |
56 |
Correct |
65 ms |
162864 KB |
Output is correct |
57 |
Correct |
63 ms |
162852 KB |
Output is correct |
58 |
Correct |
68 ms |
101376 KB |
Output is correct |
59 |
Correct |
75 ms |
118824 KB |
Output is correct |
60 |
Correct |
74 ms |
111104 KB |
Output is correct |
61 |
Correct |
89 ms |
109044 KB |
Output is correct |
62 |
Correct |
64 ms |
161176 KB |
Output is correct |
63 |
Correct |
73 ms |
161380 KB |
Output is correct |
64 |
Correct |
70 ms |
154532 KB |
Output is correct |
65 |
Correct |
72 ms |
145084 KB |
Output is correct |
66 |
Correct |
70 ms |
109464 KB |
Output is correct |
67 |
Correct |
70 ms |
106692 KB |
Output is correct |
68 |
Correct |
77 ms |
112148 KB |
Output is correct |
69 |
Correct |
74 ms |
109804 KB |
Output is correct |
70 |
Correct |
74 ms |
115644 KB |
Output is correct |
71 |
Correct |
71 ms |
107500 KB |
Output is correct |
72 |
Correct |
23 ms |
44860 KB |
Output is correct |
73 |
Correct |
3 ms |
3668 KB |
Output is correct |