#include <bits/stdc++.h>
using namespace std;
//#define int long long
#define OYY LLONG_MAX
#define mod 998244353
#define faster ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
#define FOR for(int i=1;i<=n;i++)
#define mid (start+end)/2
#define lim 405
#define fi first
#define se second
int n;
string s;
vector<int> r,y,g;
int dp[lim][lim][lim][3];
//0->red
//1->yellow
//2->green
inline int f(int sira,int red,int yel,int gre,int eski){
//cout<<sira<<" "<<red<<" "<<yel<<" "<<gre<<" "<<eski<<endl;
if(sira>n)return 0;
if(~dp[red][yel][gre][eski])return dp[red][yel][gre][eski];
int cev=INT_MAX;
if((sira==1 || eski!=0) && red!=r.size()){
cev=min(cev,f(sira+1,red+1,yel,gre,0)+((f(sira+1,red+1,yel,gre,0)==INT_MAX)?0:abs(sira-r[red])));
}
if(eski!=1 && yel!=y.size()){
cev=min(cev,f(sira+1,red,yel+1,gre,1)+((f(sira+1,red,yel+1,gre,1)==INT_MAX)?0:abs(sira-y[yel])));
}
if(eski!=2 && gre!=g.size()){
cev=min(cev,f(sira+1,red,yel,gre+1,2)+((f(sira+1,red,yel,gre+1,2)==INT_MAX)?0:abs(sira-g[gre])));
}
return dp[red][yel][gre][eski]=cev;
}
int32_t main(){
faster
cin>>n;
cin>>s;
FOR{
if(s[i-1]=='R')r.push_back(i);
else if(s[i-1]=='Y')y.push_back(i);
else g.push_back(i);
}
memset(dp,-1,sizeof(dp));
int cev=f(1,0,0,0,0);
if(cev==INT_MAX)cout<<-1<<'\n';
else cout<<cev/2<<'\n';
return 0;
}
Compilation message
joi2019_ho_t3.cpp: In function 'int f(int, int, int, int, int)':
joi2019_ho_t3.cpp:31:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
31 | if((sira==1 || eski!=0) && red!=r.size()){
| ~~~^~~~~~~~~~
joi2019_ho_t3.cpp:34:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
34 | if(eski!=1 && yel!=y.size()){
| ~~~^~~~~~~~~~
joi2019_ho_t3.cpp:37:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
37 | if(eski!=2 && gre!=g.size()){
| ~~~^~~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
498 ms |
780412 KB |
Output is correct |
2 |
Correct |
466 ms |
780360 KB |
Output is correct |
3 |
Correct |
474 ms |
780360 KB |
Output is correct |
4 |
Correct |
484 ms |
780204 KB |
Output is correct |
5 |
Correct |
489 ms |
780364 KB |
Output is correct |
6 |
Correct |
486 ms |
780360 KB |
Output is correct |
7 |
Correct |
484 ms |
780308 KB |
Output is correct |
8 |
Correct |
488 ms |
780360 KB |
Output is correct |
9 |
Correct |
476 ms |
780360 KB |
Output is correct |
10 |
Correct |
483 ms |
780224 KB |
Output is correct |
11 |
Incorrect |
486 ms |
780220 KB |
Output isn't correct |
12 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
498 ms |
780412 KB |
Output is correct |
2 |
Correct |
466 ms |
780360 KB |
Output is correct |
3 |
Correct |
474 ms |
780360 KB |
Output is correct |
4 |
Correct |
484 ms |
780204 KB |
Output is correct |
5 |
Correct |
489 ms |
780364 KB |
Output is correct |
6 |
Correct |
486 ms |
780360 KB |
Output is correct |
7 |
Correct |
484 ms |
780308 KB |
Output is correct |
8 |
Correct |
488 ms |
780360 KB |
Output is correct |
9 |
Correct |
476 ms |
780360 KB |
Output is correct |
10 |
Correct |
483 ms |
780224 KB |
Output is correct |
11 |
Incorrect |
486 ms |
780220 KB |
Output isn't correct |
12 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
489 ms |
780240 KB |
Output is correct |
2 |
Correct |
470 ms |
780380 KB |
Output is correct |
3 |
Correct |
482 ms |
780296 KB |
Output is correct |
4 |
Correct |
495 ms |
780428 KB |
Output is correct |
5 |
Correct |
489 ms |
780360 KB |
Output is correct |
6 |
Correct |
472 ms |
780412 KB |
Output is correct |
7 |
Correct |
453 ms |
780360 KB |
Output is correct |
8 |
Correct |
439 ms |
780248 KB |
Output is correct |
9 |
Correct |
463 ms |
780360 KB |
Output is correct |
10 |
Correct |
465 ms |
780404 KB |
Output is correct |
11 |
Correct |
475 ms |
780360 KB |
Output is correct |
12 |
Execution timed out |
501 ms |
780360 KB |
Time limit exceeded |
13 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
498 ms |
780412 KB |
Output is correct |
2 |
Correct |
466 ms |
780360 KB |
Output is correct |
3 |
Correct |
474 ms |
780360 KB |
Output is correct |
4 |
Correct |
484 ms |
780204 KB |
Output is correct |
5 |
Correct |
489 ms |
780364 KB |
Output is correct |
6 |
Correct |
486 ms |
780360 KB |
Output is correct |
7 |
Correct |
484 ms |
780308 KB |
Output is correct |
8 |
Correct |
488 ms |
780360 KB |
Output is correct |
9 |
Correct |
476 ms |
780360 KB |
Output is correct |
10 |
Correct |
483 ms |
780224 KB |
Output is correct |
11 |
Incorrect |
486 ms |
780220 KB |
Output isn't correct |
12 |
Halted |
0 ms |
0 KB |
- |