#include<bits/stdc++.h>
using namespace std;
#define ll int
#define fi first
#define se second
#define p(x,y) pair<ll,ll>(x,y)
#define BIT(i,x) ((x>>i)&1)
#define MASK(x) (1<<x)
#define ld long double
#define __builtin_popcount __builtin_popcountll
#define pll pair<ll,ll>
template<class T1,class T2>
bool maximize(T1 &x,const T2 &y)
{
if(x<y)
{
x=y;
return 1;
}
return 0;
}
template<class T1,class T2>
bool minimize(T1 &x,const T2 &y)
{
if(x>y)
{
x=y;
return 1;
}
return 0;
}
void online()
{
std::ios_base::sync_with_stdio(0);
cin.tie(0);
#ifdef thuc
freopen("input.INP","r",stdin);
freopen("output.OUT","w",stdout);
#else
#endif
}
const ll N=400;
ll f[N][N][N][3],n;
vector<ll> vt[3];
ll lg[4][4][N+2][N+2];
string s;
void solve(ll x,ll y)
{
for(int i=0;i<vt[x].size();i++)
{
for(int j=0;j<=vt[y].size();j++)
{
if(j>0)
lg[x][y][i][j]+=(vt[x][i]>vt[y][j-1]);
lg[x][y][i][j+1]+=lg[x][y][i][j];
}
}
}
ll dp(ll i,ll j,ll k,ll pre)
{
if(i==vt[0].size()&&j==vt[1].size()&&k==vt[2].size()) return 0;
ll &res=f[i][j][k][pre];
if(res!=-1) return res;
res=1e9;
if(pre!=0&&i<vt[0].size())
{
minimize(res,dp(i+1,j,k,0)+vt[0][i]-i-lg[0][1][i][j]-lg[0][2][i][k]);
}
if(pre!=1&&j<vt[1].size())
{
minimize(res,dp(i,j+1,k,1)+vt[1][j]-j-lg[1][0][j][i]-lg[1][2][j][k]);
}
if(pre!=2&&k<vt[2].size())
{
minimize(res,dp(i,j,k+1,2)+vt[2][k]-k-lg[2][0][k][i]-lg[2][1][k][j]);
}
return res;
}
int main()
{
online();
cin>>n;
cin>>s;
for(int i=0;i<n;i++)
{
if(s[i]=='R') vt[0].push_back(i);
if(s[i]=='G') vt[1].push_back(i);
if(s[i]=='Y') vt[2].push_back(i);
}
solve(0,1);
solve(0,2);
solve(1,0);
solve(1,2);
solve(2,0);
solve(2,1);
memset(f,-1,sizeof f);
ll z=min(dp(0,0,0,0),min(dp(0,0,0,1),dp(0,0,0,2)));
if(z>=1e9)
{
z=-1;
}
cout<<z;
}
Compilation message
joi2019_ho_t3.cpp: In function 'void solve(int, int)':
joi2019_ho_t3.cpp:50:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
50 | for(int i=0;i<vt[x].size();i++)
| ~^~~~~~~~~~~~~
joi2019_ho_t3.cpp:52:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
52 | for(int j=0;j<=vt[y].size();j++)
| ~^~~~~~~~~~~~~~
joi2019_ho_t3.cpp: In function 'int dp(int, int, int, int)':
joi2019_ho_t3.cpp:62:9: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
62 | if(i==vt[0].size()&&j==vt[1].size()&&k==vt[2].size()) return 0;
| ~^~~~~~~~~~~~~~
joi2019_ho_t3.cpp:62:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
62 | if(i==vt[0].size()&&j==vt[1].size()&&k==vt[2].size()) return 0;
| ~^~~~~~~~~~~~~~
joi2019_ho_t3.cpp:62:43: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
62 | if(i==vt[0].size()&&j==vt[1].size()&&k==vt[2].size()) return 0;
| ~^~~~~~~~~~~~~~
joi2019_ho_t3.cpp:66:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
66 | if(pre!=0&&i<vt[0].size())
| ~^~~~~~~~~~~~~
joi2019_ho_t3.cpp:70:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
70 | if(pre!=1&&j<vt[1].size())
| ~^~~~~~~~~~~~~
joi2019_ho_t3.cpp:74:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
74 | if(pre!=2&&k<vt[2].size())
| ~^~~~~~~~~~~~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
315 ms |
753572 KB |
Output is correct |
2 |
Correct |
247 ms |
753644 KB |
Output is correct |
3 |
Correct |
215 ms |
753488 KB |
Output is correct |
4 |
Correct |
164 ms |
753456 KB |
Output is correct |
5 |
Correct |
152 ms |
753492 KB |
Output is correct |
6 |
Correct |
145 ms |
753492 KB |
Output is correct |
7 |
Correct |
142 ms |
753492 KB |
Output is correct |
8 |
Correct |
139 ms |
753684 KB |
Output is correct |
9 |
Correct |
149 ms |
753472 KB |
Output is correct |
10 |
Correct |
135 ms |
753492 KB |
Output is correct |
11 |
Correct |
131 ms |
753536 KB |
Output is correct |
12 |
Correct |
123 ms |
753652 KB |
Output is correct |
13 |
Correct |
129 ms |
753572 KB |
Output is correct |
14 |
Correct |
118 ms |
753520 KB |
Output is correct |
15 |
Correct |
87 ms |
753492 KB |
Output is correct |
16 |
Correct |
85 ms |
753680 KB |
Output is correct |
17 |
Correct |
88 ms |
753928 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
315 ms |
753572 KB |
Output is correct |
2 |
Correct |
247 ms |
753644 KB |
Output is correct |
3 |
Correct |
215 ms |
753488 KB |
Output is correct |
4 |
Correct |
164 ms |
753456 KB |
Output is correct |
5 |
Correct |
152 ms |
753492 KB |
Output is correct |
6 |
Correct |
145 ms |
753492 KB |
Output is correct |
7 |
Correct |
142 ms |
753492 KB |
Output is correct |
8 |
Correct |
139 ms |
753684 KB |
Output is correct |
9 |
Correct |
149 ms |
753472 KB |
Output is correct |
10 |
Correct |
135 ms |
753492 KB |
Output is correct |
11 |
Correct |
131 ms |
753536 KB |
Output is correct |
12 |
Correct |
123 ms |
753652 KB |
Output is correct |
13 |
Correct |
129 ms |
753572 KB |
Output is correct |
14 |
Correct |
118 ms |
753520 KB |
Output is correct |
15 |
Correct |
87 ms |
753492 KB |
Output is correct |
16 |
Correct |
85 ms |
753680 KB |
Output is correct |
17 |
Correct |
88 ms |
753928 KB |
Output is correct |
18 |
Correct |
88 ms |
753732 KB |
Output is correct |
19 |
Correct |
85 ms |
753752 KB |
Output is correct |
20 |
Correct |
85 ms |
753748 KB |
Output is correct |
21 |
Correct |
85 ms |
753656 KB |
Output is correct |
22 |
Correct |
87 ms |
753852 KB |
Output is correct |
23 |
Correct |
85 ms |
753744 KB |
Output is correct |
24 |
Correct |
84 ms |
753784 KB |
Output is correct |
25 |
Correct |
84 ms |
753744 KB |
Output is correct |
26 |
Correct |
84 ms |
753604 KB |
Output is correct |
27 |
Correct |
85 ms |
753744 KB |
Output is correct |
28 |
Correct |
85 ms |
753748 KB |
Output is correct |
29 |
Correct |
84 ms |
753748 KB |
Output is correct |
30 |
Correct |
83 ms |
753836 KB |
Output is correct |
31 |
Correct |
83 ms |
753628 KB |
Output is correct |
32 |
Correct |
84 ms |
753748 KB |
Output is correct |
33 |
Correct |
88 ms |
753744 KB |
Output is correct |
34 |
Correct |
85 ms |
753748 KB |
Output is correct |
35 |
Correct |
83 ms |
753676 KB |
Output is correct |
36 |
Correct |
84 ms |
753800 KB |
Output is correct |
37 |
Correct |
84 ms |
753748 KB |
Output is correct |
38 |
Correct |
83 ms |
753744 KB |
Output is correct |
39 |
Correct |
85 ms |
753744 KB |
Output is correct |
40 |
Correct |
87 ms |
753868 KB |
Output is correct |
41 |
Correct |
89 ms |
753748 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
85 ms |
753596 KB |
Output is correct |
2 |
Correct |
84 ms |
754832 KB |
Output is correct |
3 |
Correct |
83 ms |
754936 KB |
Output is correct |
4 |
Correct |
84 ms |
754832 KB |
Output is correct |
5 |
Correct |
87 ms |
754740 KB |
Output is correct |
6 |
Correct |
82 ms |
754936 KB |
Output is correct |
7 |
Correct |
86 ms |
754768 KB |
Output is correct |
8 |
Correct |
84 ms |
754904 KB |
Output is correct |
9 |
Correct |
88 ms |
754768 KB |
Output is correct |
10 |
Correct |
86 ms |
754864 KB |
Output is correct |
11 |
Correct |
84 ms |
754792 KB |
Output is correct |
12 |
Correct |
88 ms |
754288 KB |
Output is correct |
13 |
Correct |
83 ms |
754492 KB |
Output is correct |
14 |
Correct |
84 ms |
754516 KB |
Output is correct |
15 |
Correct |
83 ms |
754884 KB |
Output is correct |
16 |
Correct |
86 ms |
754768 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
315 ms |
753572 KB |
Output is correct |
2 |
Correct |
247 ms |
753644 KB |
Output is correct |
3 |
Correct |
215 ms |
753488 KB |
Output is correct |
4 |
Correct |
164 ms |
753456 KB |
Output is correct |
5 |
Correct |
152 ms |
753492 KB |
Output is correct |
6 |
Correct |
145 ms |
753492 KB |
Output is correct |
7 |
Correct |
142 ms |
753492 KB |
Output is correct |
8 |
Correct |
139 ms |
753684 KB |
Output is correct |
9 |
Correct |
149 ms |
753472 KB |
Output is correct |
10 |
Correct |
135 ms |
753492 KB |
Output is correct |
11 |
Correct |
131 ms |
753536 KB |
Output is correct |
12 |
Correct |
123 ms |
753652 KB |
Output is correct |
13 |
Correct |
129 ms |
753572 KB |
Output is correct |
14 |
Correct |
118 ms |
753520 KB |
Output is correct |
15 |
Correct |
87 ms |
753492 KB |
Output is correct |
16 |
Correct |
85 ms |
753680 KB |
Output is correct |
17 |
Correct |
88 ms |
753928 KB |
Output is correct |
18 |
Correct |
88 ms |
753732 KB |
Output is correct |
19 |
Correct |
85 ms |
753752 KB |
Output is correct |
20 |
Correct |
85 ms |
753748 KB |
Output is correct |
21 |
Correct |
85 ms |
753656 KB |
Output is correct |
22 |
Correct |
87 ms |
753852 KB |
Output is correct |
23 |
Correct |
85 ms |
753744 KB |
Output is correct |
24 |
Correct |
84 ms |
753784 KB |
Output is correct |
25 |
Correct |
84 ms |
753744 KB |
Output is correct |
26 |
Correct |
84 ms |
753604 KB |
Output is correct |
27 |
Correct |
85 ms |
753744 KB |
Output is correct |
28 |
Correct |
85 ms |
753748 KB |
Output is correct |
29 |
Correct |
84 ms |
753748 KB |
Output is correct |
30 |
Correct |
83 ms |
753836 KB |
Output is correct |
31 |
Correct |
83 ms |
753628 KB |
Output is correct |
32 |
Correct |
84 ms |
753748 KB |
Output is correct |
33 |
Correct |
88 ms |
753744 KB |
Output is correct |
34 |
Correct |
85 ms |
753748 KB |
Output is correct |
35 |
Correct |
83 ms |
753676 KB |
Output is correct |
36 |
Correct |
84 ms |
753800 KB |
Output is correct |
37 |
Correct |
84 ms |
753748 KB |
Output is correct |
38 |
Correct |
83 ms |
753744 KB |
Output is correct |
39 |
Correct |
85 ms |
753744 KB |
Output is correct |
40 |
Correct |
87 ms |
753868 KB |
Output is correct |
41 |
Correct |
89 ms |
753748 KB |
Output is correct |
42 |
Correct |
85 ms |
753596 KB |
Output is correct |
43 |
Correct |
84 ms |
754832 KB |
Output is correct |
44 |
Correct |
83 ms |
754936 KB |
Output is correct |
45 |
Correct |
84 ms |
754832 KB |
Output is correct |
46 |
Correct |
87 ms |
754740 KB |
Output is correct |
47 |
Correct |
82 ms |
754936 KB |
Output is correct |
48 |
Correct |
86 ms |
754768 KB |
Output is correct |
49 |
Correct |
84 ms |
754904 KB |
Output is correct |
50 |
Correct |
88 ms |
754768 KB |
Output is correct |
51 |
Correct |
86 ms |
754864 KB |
Output is correct |
52 |
Correct |
84 ms |
754792 KB |
Output is correct |
53 |
Correct |
88 ms |
754288 KB |
Output is correct |
54 |
Correct |
83 ms |
754492 KB |
Output is correct |
55 |
Correct |
84 ms |
754516 KB |
Output is correct |
56 |
Correct |
83 ms |
754884 KB |
Output is correct |
57 |
Correct |
86 ms |
754768 KB |
Output is correct |
58 |
Correct |
158 ms |
754776 KB |
Output is correct |
59 |
Correct |
143 ms |
754772 KB |
Output is correct |
60 |
Correct |
141 ms |
754768 KB |
Output is correct |
61 |
Correct |
150 ms |
754936 KB |
Output is correct |
62 |
Correct |
84 ms |
754772 KB |
Output is correct |
63 |
Correct |
84 ms |
754772 KB |
Output is correct |
64 |
Correct |
93 ms |
754904 KB |
Output is correct |
65 |
Correct |
111 ms |
755280 KB |
Output is correct |
66 |
Correct |
145 ms |
754852 KB |
Output is correct |
67 |
Correct |
141 ms |
754964 KB |
Output is correct |
68 |
Correct |
141 ms |
754804 KB |
Output is correct |
69 |
Correct |
149 ms |
754836 KB |
Output is correct |
70 |
Correct |
147 ms |
754960 KB |
Output is correct |
71 |
Correct |
144 ms |
754772 KB |
Output is correct |
72 |
Correct |
85 ms |
754768 KB |
Output is correct |
73 |
Correct |
86 ms |
754768 KB |
Output is correct |