#include <bits/stdc++.h>
using namespace std;
vector<int> pos[3];
int mem[404][404][404][3];
int vis[404][404][404][3];
int sum[404][3];
int n;
string s;
int go(int x,int y,int z,int las)
{
if(x+y+z==n) return 0;
int &ret=mem[x][y][z][las];
if(vis[x][y][z][las]) return ret;
vis[x][y][z][las]=1;
ret=(1<<30);
int cpos=x+y+z;
if(x<pos[0].size()&&(las!=0||cpos==0))
{
int dif=0;
dif+=max(sum[pos[0][x]][1]-y,0);
dif+=max(sum[pos[0][x]][2]-z,0);
ret=min(ret,go(x+1,y,z,0)+dif);
}
if(y<pos[1].size()&&(las!=1||cpos==0))
{
int dif=0;
dif+=max(sum[pos[1][y]][0]-x,0);
dif+=max(sum[pos[1][y]][2]-z,0);
ret=min(ret,go(x,y+1,z,1)+dif);
}
if(z<pos[2].size()&&(las!=2||cpos==0))
{
int dif=0;
dif+=max(sum[pos[2][z]][0]-x,0);
dif+=max(sum[pos[2][z]][1]-y,0);
ret=min(ret,go(x,y,z+1,2)+dif);
}
return ret;
}
int main()
{
cin >> n >> s;
for(int i=0;i<n;i++)
{
if(s[i]=='R'){sum[i][0]++; pos[0].push_back(i);}
else if(s[i]=='G') {sum[i][1]++; pos[1].push_back(i);}
else {sum[i][2]++; pos[2].push_back(i);}
if(i) for(int j=0;j<3;j++) sum[i][j]+=sum[i-1][j];
}
int ans=go(0,0,0,0);
if(ans>=(1<<30)) ans=-1;
cout << ans << endl;
}
Compilation message
joi2019_ho_t3.cpp: In function 'int go(int, int, int, int)':
joi2019_ho_t3.cpp:20:6: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
if(x<pos[0].size()&&(las!=0||cpos==0))
~^~~~~~~~~~~~~~
joi2019_ho_t3.cpp:27:6: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
if(y<pos[1].size()&&(las!=1||cpos==0))
~^~~~~~~~~~~~~~
joi2019_ho_t3.cpp:34:6: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
if(z<pos[2].size()&&(las!=2||cpos==0))
~^~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
376 KB |
Output is correct |
| 2 |
Correct |
5 ms |
376 KB |
Output is correct |
| 3 |
Correct |
5 ms |
376 KB |
Output is correct |
| 4 |
Correct |
5 ms |
504 KB |
Output is correct |
| 5 |
Correct |
5 ms |
504 KB |
Output is correct |
| 6 |
Correct |
5 ms |
760 KB |
Output is correct |
| 7 |
Correct |
5 ms |
632 KB |
Output is correct |
| 8 |
Correct |
5 ms |
632 KB |
Output is correct |
| 9 |
Correct |
5 ms |
632 KB |
Output is correct |
| 10 |
Correct |
5 ms |
504 KB |
Output is correct |
| 11 |
Correct |
5 ms |
632 KB |
Output is correct |
| 12 |
Correct |
5 ms |
632 KB |
Output is correct |
| 13 |
Correct |
5 ms |
504 KB |
Output is correct |
| 14 |
Correct |
5 ms |
632 KB |
Output is correct |
| 15 |
Correct |
5 ms |
508 KB |
Output is correct |
| 16 |
Correct |
5 ms |
504 KB |
Output is correct |
| 17 |
Correct |
5 ms |
376 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
376 KB |
Output is correct |
| 2 |
Correct |
5 ms |
376 KB |
Output is correct |
| 3 |
Correct |
5 ms |
376 KB |
Output is correct |
| 4 |
Correct |
5 ms |
504 KB |
Output is correct |
| 5 |
Correct |
5 ms |
504 KB |
Output is correct |
| 6 |
Correct |
5 ms |
760 KB |
Output is correct |
| 7 |
Correct |
5 ms |
632 KB |
Output is correct |
| 8 |
Correct |
5 ms |
632 KB |
Output is correct |
| 9 |
Correct |
5 ms |
632 KB |
Output is correct |
| 10 |
Correct |
5 ms |
504 KB |
Output is correct |
| 11 |
Correct |
5 ms |
632 KB |
Output is correct |
| 12 |
Correct |
5 ms |
632 KB |
Output is correct |
| 13 |
Correct |
5 ms |
504 KB |
Output is correct |
| 14 |
Correct |
5 ms |
632 KB |
Output is correct |
| 15 |
Correct |
5 ms |
508 KB |
Output is correct |
| 16 |
Correct |
5 ms |
504 KB |
Output is correct |
| 17 |
Correct |
5 ms |
376 KB |
Output is correct |
| 18 |
Correct |
8 ms |
4216 KB |
Output is correct |
| 19 |
Correct |
8 ms |
3448 KB |
Output is correct |
| 20 |
Correct |
8 ms |
4088 KB |
Output is correct |
| 21 |
Correct |
8 ms |
4472 KB |
Output is correct |
| 22 |
Correct |
7 ms |
2936 KB |
Output is correct |
| 23 |
Correct |
8 ms |
3832 KB |
Output is correct |
| 24 |
Correct |
7 ms |
2808 KB |
Output is correct |
| 25 |
Correct |
6 ms |
1400 KB |
Output is correct |
| 26 |
Correct |
6 ms |
1656 KB |
Output is correct |
| 27 |
Correct |
7 ms |
4344 KB |
Output is correct |
| 28 |
Correct |
10 ms |
4216 KB |
Output is correct |
| 29 |
Correct |
8 ms |
4088 KB |
Output is correct |
| 30 |
Correct |
8 ms |
4088 KB |
Output is correct |
| 31 |
Correct |
7 ms |
3576 KB |
Output is correct |
| 32 |
Correct |
8 ms |
4216 KB |
Output is correct |
| 33 |
Correct |
6 ms |
1916 KB |
Output is correct |
| 34 |
Correct |
7 ms |
2424 KB |
Output is correct |
| 35 |
Correct |
8 ms |
4344 KB |
Output is correct |
| 36 |
Correct |
8 ms |
3576 KB |
Output is correct |
| 37 |
Correct |
7 ms |
3064 KB |
Output is correct |
| 38 |
Correct |
7 ms |
3576 KB |
Output is correct |
| 39 |
Correct |
8 ms |
4220 KB |
Output is correct |
| 40 |
Correct |
5 ms |
504 KB |
Output is correct |
| 41 |
Correct |
6 ms |
1400 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
376 KB |
Output is correct |
| 2 |
Correct |
9 ms |
6648 KB |
Output is correct |
| 3 |
Correct |
9 ms |
6648 KB |
Output is correct |
| 4 |
Correct |
9 ms |
6648 KB |
Output is correct |
| 5 |
Correct |
9 ms |
6648 KB |
Output is correct |
| 6 |
Correct |
9 ms |
6648 KB |
Output is correct |
| 7 |
Correct |
10 ms |
6648 KB |
Output is correct |
| 8 |
Correct |
9 ms |
6648 KB |
Output is correct |
| 9 |
Correct |
9 ms |
6648 KB |
Output is correct |
| 10 |
Correct |
9 ms |
6648 KB |
Output is correct |
| 11 |
Correct |
9 ms |
6648 KB |
Output is correct |
| 12 |
Correct |
7 ms |
3576 KB |
Output is correct |
| 13 |
Correct |
7 ms |
4728 KB |
Output is correct |
| 14 |
Correct |
8 ms |
5496 KB |
Output is correct |
| 15 |
Correct |
9 ms |
6648 KB |
Output is correct |
| 16 |
Correct |
10 ms |
6776 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
376 KB |
Output is correct |
| 2 |
Correct |
5 ms |
376 KB |
Output is correct |
| 3 |
Correct |
5 ms |
376 KB |
Output is correct |
| 4 |
Correct |
5 ms |
504 KB |
Output is correct |
| 5 |
Correct |
5 ms |
504 KB |
Output is correct |
| 6 |
Correct |
5 ms |
760 KB |
Output is correct |
| 7 |
Correct |
5 ms |
632 KB |
Output is correct |
| 8 |
Correct |
5 ms |
632 KB |
Output is correct |
| 9 |
Correct |
5 ms |
632 KB |
Output is correct |
| 10 |
Correct |
5 ms |
504 KB |
Output is correct |
| 11 |
Correct |
5 ms |
632 KB |
Output is correct |
| 12 |
Correct |
5 ms |
632 KB |
Output is correct |
| 13 |
Correct |
5 ms |
504 KB |
Output is correct |
| 14 |
Correct |
5 ms |
632 KB |
Output is correct |
| 15 |
Correct |
5 ms |
508 KB |
Output is correct |
| 16 |
Correct |
5 ms |
504 KB |
Output is correct |
| 17 |
Correct |
5 ms |
376 KB |
Output is correct |
| 18 |
Correct |
8 ms |
4216 KB |
Output is correct |
| 19 |
Correct |
8 ms |
3448 KB |
Output is correct |
| 20 |
Correct |
8 ms |
4088 KB |
Output is correct |
| 21 |
Correct |
8 ms |
4472 KB |
Output is correct |
| 22 |
Correct |
7 ms |
2936 KB |
Output is correct |
| 23 |
Correct |
8 ms |
3832 KB |
Output is correct |
| 24 |
Correct |
7 ms |
2808 KB |
Output is correct |
| 25 |
Correct |
6 ms |
1400 KB |
Output is correct |
| 26 |
Correct |
6 ms |
1656 KB |
Output is correct |
| 27 |
Correct |
7 ms |
4344 KB |
Output is correct |
| 28 |
Correct |
10 ms |
4216 KB |
Output is correct |
| 29 |
Correct |
8 ms |
4088 KB |
Output is correct |
| 30 |
Correct |
8 ms |
4088 KB |
Output is correct |
| 31 |
Correct |
7 ms |
3576 KB |
Output is correct |
| 32 |
Correct |
8 ms |
4216 KB |
Output is correct |
| 33 |
Correct |
6 ms |
1916 KB |
Output is correct |
| 34 |
Correct |
7 ms |
2424 KB |
Output is correct |
| 35 |
Correct |
8 ms |
4344 KB |
Output is correct |
| 36 |
Correct |
8 ms |
3576 KB |
Output is correct |
| 37 |
Correct |
7 ms |
3064 KB |
Output is correct |
| 38 |
Correct |
7 ms |
3576 KB |
Output is correct |
| 39 |
Correct |
8 ms |
4220 KB |
Output is correct |
| 40 |
Correct |
5 ms |
504 KB |
Output is correct |
| 41 |
Correct |
6 ms |
1400 KB |
Output is correct |
| 42 |
Correct |
5 ms |
376 KB |
Output is correct |
| 43 |
Correct |
9 ms |
6648 KB |
Output is correct |
| 44 |
Correct |
9 ms |
6648 KB |
Output is correct |
| 45 |
Correct |
9 ms |
6648 KB |
Output is correct |
| 46 |
Correct |
9 ms |
6648 KB |
Output is correct |
| 47 |
Correct |
9 ms |
6648 KB |
Output is correct |
| 48 |
Correct |
10 ms |
6648 KB |
Output is correct |
| 49 |
Correct |
9 ms |
6648 KB |
Output is correct |
| 50 |
Correct |
9 ms |
6648 KB |
Output is correct |
| 51 |
Correct |
9 ms |
6648 KB |
Output is correct |
| 52 |
Correct |
9 ms |
6648 KB |
Output is correct |
| 53 |
Correct |
7 ms |
3576 KB |
Output is correct |
| 54 |
Correct |
7 ms |
4728 KB |
Output is correct |
| 55 |
Correct |
8 ms |
5496 KB |
Output is correct |
| 56 |
Correct |
9 ms |
6648 KB |
Output is correct |
| 57 |
Correct |
10 ms |
6776 KB |
Output is correct |
| 58 |
Correct |
330 ms |
146680 KB |
Output is correct |
| 59 |
Correct |
295 ms |
180124 KB |
Output is correct |
| 60 |
Correct |
313 ms |
167904 KB |
Output is correct |
| 61 |
Correct |
321 ms |
163120 KB |
Output is correct |
| 62 |
Correct |
17 ms |
17912 KB |
Output is correct |
| 63 |
Correct |
25 ms |
31352 KB |
Output is correct |
| 64 |
Correct |
85 ms |
100984 KB |
Output is correct |
| 65 |
Correct |
150 ms |
144120 KB |
Output is correct |
| 66 |
Correct |
305 ms |
165240 KB |
Output is correct |
| 67 |
Correct |
367 ms |
157792 KB |
Output is correct |
| 68 |
Correct |
332 ms |
170012 KB |
Output is correct |
| 69 |
Correct |
314 ms |
164300 KB |
Output is correct |
| 70 |
Correct |
287 ms |
175612 KB |
Output is correct |
| 71 |
Correct |
293 ms |
159736 KB |
Output is correct |
| 72 |
Correct |
230 ms |
21752 KB |
Output is correct |
| 73 |
Correct |
8 ms |
4728 KB |
Output is correct |
