#include <iostream>
#include <cmath>
#define INF 100000000
using namespace std;
int n;
int dp[401][401][401][3];
int g[3][401];
int cc[] = {0, 0, 0};
int cmp[401][3];
signed main(){
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cin>>n;
if(n==1){
cout<<0<<"\n";
return 0;
}
char c;
for(int i = 1;i<=n;i++){
cmp[i][0] = cc[0];
cmp[i][1] = cc[1];
cmp[i][2] = cc[2];
cin>>c;
if(c=='R') g[0][cc[0]++] = i;
else if(c=='G') g[1][cc[1]++] = i;
else g[2][cc[2]++] = i;
}
for(int i = 0;i<=n;i++) for(int j = 0;j<=n;j++) for(int k = 0;k<=n;k++) for(int x = 0;x<3;x++) dp[i][j][k][x] = INF;
for(int i = n-1;i>=1;i--){
for(int aused = n;aused>=0;aused--){
for(int bused = n;bused >= 0 ;bused--){
int cused = i - (aused + bused);
int ause = INF, buse = INF, cuse = INF;
if(aused>cc[0] || bused>cc[1] || cused>cc[2]) continue;
if(cused<0) continue;
int currind;
//calculate use[0]
if(cc[0] > aused) {
currind = g[0][aused] + max((int) 0, bused - cmp[g[0][aused]][1]) +
max((int) 0, cused - cmp[g[0][aused]][2]);
ause = (currind - (i + 1));
if(i<n-1) ause += dp[i + 1][aused + 1][bused][0];
}
//calculate buse
if(cc[1] > bused) {
currind = g[1][bused] + max((int) 0, aused - cmp[g[1][bused]][0]) +
max((int) 0, cused - cmp[g[1][bused]][2]);
buse = (currind - (i + 1));
if(i<n-1) buse += dp[i + 1][aused][bused + 1][1];
}
//calculate cuse
if(cc[2] > cused) {
currind = g[2][cused] + max((int) 0, aused - cmp[g[2][cused]][0]) +
max((int) 0, bused - cmp[g[2][cused]][1]);
cuse = (currind - (i + 1));
if(i<n-1) cuse += dp[i + 1][aused][bused][2];
}
dp[i][aused][bused][0] = min(buse, cuse);
dp[i][aused][bused][1] = min(ause, cuse);
dp[i][aused][bused][2] = min(buse, ause);
}
}
}
int ans = INF;
if(cc[0]) {
ans = min(ans, (g[0][0] - 1) + dp[1][1][0][0]);
}
if(cc[1]) {
ans = min(ans, (g[1][0] - 1) + dp[1][0][1][1]);
}
if(cc[2]) {
ans = min(ans, (g[2][0] - 1) + dp[1][0][0][2]);
}
if(ans>=INF) ans = -1;
cout<<ans<<"\n";
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
5 ms |
384 KB |
Output is correct |
2 |
Correct |
5 ms |
384 KB |
Output is correct |
3 |
Correct |
5 ms |
384 KB |
Output is correct |
4 |
Correct |
5 ms |
896 KB |
Output is correct |
5 |
Correct |
5 ms |
1536 KB |
Output is correct |
6 |
Correct |
5 ms |
1664 KB |
Output is correct |
7 |
Correct |
5 ms |
1408 KB |
Output is correct |
8 |
Correct |
5 ms |
1536 KB |
Output is correct |
9 |
Correct |
5 ms |
1664 KB |
Output is correct |
10 |
Correct |
5 ms |
1408 KB |
Output is correct |
11 |
Correct |
5 ms |
1408 KB |
Output is correct |
12 |
Correct |
5 ms |
1408 KB |
Output is correct |
13 |
Correct |
5 ms |
1536 KB |
Output is correct |
14 |
Correct |
5 ms |
1280 KB |
Output is correct |
15 |
Correct |
6 ms |
1536 KB |
Output is correct |
16 |
Correct |
5 ms |
1536 KB |
Output is correct |
17 |
Correct |
5 ms |
1280 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
5 ms |
384 KB |
Output is correct |
2 |
Correct |
5 ms |
384 KB |
Output is correct |
3 |
Correct |
5 ms |
384 KB |
Output is correct |
4 |
Correct |
5 ms |
896 KB |
Output is correct |
5 |
Correct |
5 ms |
1536 KB |
Output is correct |
6 |
Correct |
5 ms |
1664 KB |
Output is correct |
7 |
Correct |
5 ms |
1408 KB |
Output is correct |
8 |
Correct |
5 ms |
1536 KB |
Output is correct |
9 |
Correct |
5 ms |
1664 KB |
Output is correct |
10 |
Correct |
5 ms |
1408 KB |
Output is correct |
11 |
Correct |
5 ms |
1408 KB |
Output is correct |
12 |
Correct |
5 ms |
1408 KB |
Output is correct |
13 |
Correct |
5 ms |
1536 KB |
Output is correct |
14 |
Correct |
5 ms |
1280 KB |
Output is correct |
15 |
Correct |
6 ms |
1536 KB |
Output is correct |
16 |
Correct |
5 ms |
1536 KB |
Output is correct |
17 |
Correct |
5 ms |
1280 KB |
Output is correct |
18 |
Correct |
13 ms |
18048 KB |
Output is correct |
19 |
Correct |
14 ms |
18048 KB |
Output is correct |
20 |
Correct |
14 ms |
18048 KB |
Output is correct |
21 |
Correct |
13 ms |
18048 KB |
Output is correct |
22 |
Correct |
14 ms |
18048 KB |
Output is correct |
23 |
Correct |
13 ms |
18048 KB |
Output is correct |
24 |
Correct |
13 ms |
18048 KB |
Output is correct |
25 |
Correct |
13 ms |
18048 KB |
Output is correct |
26 |
Correct |
14 ms |
18048 KB |
Output is correct |
27 |
Correct |
14 ms |
18048 KB |
Output is correct |
28 |
Correct |
13 ms |
18048 KB |
Output is correct |
29 |
Correct |
13 ms |
18048 KB |
Output is correct |
30 |
Correct |
15 ms |
18048 KB |
Output is correct |
31 |
Correct |
14 ms |
18048 KB |
Output is correct |
32 |
Correct |
14 ms |
18048 KB |
Output is correct |
33 |
Correct |
13 ms |
17536 KB |
Output is correct |
34 |
Correct |
13 ms |
17536 KB |
Output is correct |
35 |
Correct |
12 ms |
16896 KB |
Output is correct |
36 |
Correct |
14 ms |
17536 KB |
Output is correct |
37 |
Correct |
12 ms |
16256 KB |
Output is correct |
38 |
Correct |
14 ms |
18048 KB |
Output is correct |
39 |
Correct |
13 ms |
18048 KB |
Output is correct |
40 |
Correct |
14 ms |
17536 KB |
Output is correct |
41 |
Correct |
13 ms |
18048 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
4 ms |
384 KB |
Output is correct |
2 |
Correct |
471 ms |
757496 KB |
Output is correct |
3 |
Correct |
488 ms |
755448 KB |
Output is correct |
4 |
Correct |
479 ms |
757496 KB |
Output is correct |
5 |
Correct |
487 ms |
757472 KB |
Output is correct |
6 |
Correct |
480 ms |
757496 KB |
Output is correct |
7 |
Correct |
463 ms |
755320 KB |
Output is correct |
8 |
Correct |
476 ms |
755320 KB |
Output is correct |
9 |
Correct |
493 ms |
751480 KB |
Output is correct |
10 |
Correct |
489 ms |
757496 KB |
Output is correct |
11 |
Correct |
493 ms |
757624 KB |
Output is correct |
12 |
Correct |
127 ms |
202744 KB |
Output is correct |
13 |
Correct |
212 ms |
357368 KB |
Output is correct |
14 |
Correct |
331 ms |
517496 KB |
Output is correct |
15 |
Correct |
461 ms |
757496 KB |
Output is correct |
16 |
Correct |
467 ms |
757624 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
5 ms |
384 KB |
Output is correct |
2 |
Correct |
5 ms |
384 KB |
Output is correct |
3 |
Correct |
5 ms |
384 KB |
Output is correct |
4 |
Correct |
5 ms |
896 KB |
Output is correct |
5 |
Correct |
5 ms |
1536 KB |
Output is correct |
6 |
Correct |
5 ms |
1664 KB |
Output is correct |
7 |
Correct |
5 ms |
1408 KB |
Output is correct |
8 |
Correct |
5 ms |
1536 KB |
Output is correct |
9 |
Correct |
5 ms |
1664 KB |
Output is correct |
10 |
Correct |
5 ms |
1408 KB |
Output is correct |
11 |
Correct |
5 ms |
1408 KB |
Output is correct |
12 |
Correct |
5 ms |
1408 KB |
Output is correct |
13 |
Correct |
5 ms |
1536 KB |
Output is correct |
14 |
Correct |
5 ms |
1280 KB |
Output is correct |
15 |
Correct |
6 ms |
1536 KB |
Output is correct |
16 |
Correct |
5 ms |
1536 KB |
Output is correct |
17 |
Correct |
5 ms |
1280 KB |
Output is correct |
18 |
Correct |
13 ms |
18048 KB |
Output is correct |
19 |
Correct |
14 ms |
18048 KB |
Output is correct |
20 |
Correct |
14 ms |
18048 KB |
Output is correct |
21 |
Correct |
13 ms |
18048 KB |
Output is correct |
22 |
Correct |
14 ms |
18048 KB |
Output is correct |
23 |
Correct |
13 ms |
18048 KB |
Output is correct |
24 |
Correct |
13 ms |
18048 KB |
Output is correct |
25 |
Correct |
13 ms |
18048 KB |
Output is correct |
26 |
Correct |
14 ms |
18048 KB |
Output is correct |
27 |
Correct |
14 ms |
18048 KB |
Output is correct |
28 |
Correct |
13 ms |
18048 KB |
Output is correct |
29 |
Correct |
13 ms |
18048 KB |
Output is correct |
30 |
Correct |
15 ms |
18048 KB |
Output is correct |
31 |
Correct |
14 ms |
18048 KB |
Output is correct |
32 |
Correct |
14 ms |
18048 KB |
Output is correct |
33 |
Correct |
13 ms |
17536 KB |
Output is correct |
34 |
Correct |
13 ms |
17536 KB |
Output is correct |
35 |
Correct |
12 ms |
16896 KB |
Output is correct |
36 |
Correct |
14 ms |
17536 KB |
Output is correct |
37 |
Correct |
12 ms |
16256 KB |
Output is correct |
38 |
Correct |
14 ms |
18048 KB |
Output is correct |
39 |
Correct |
13 ms |
18048 KB |
Output is correct |
40 |
Correct |
14 ms |
17536 KB |
Output is correct |
41 |
Correct |
13 ms |
18048 KB |
Output is correct |
42 |
Correct |
4 ms |
384 KB |
Output is correct |
43 |
Correct |
471 ms |
757496 KB |
Output is correct |
44 |
Correct |
488 ms |
755448 KB |
Output is correct |
45 |
Correct |
479 ms |
757496 KB |
Output is correct |
46 |
Correct |
487 ms |
757472 KB |
Output is correct |
47 |
Correct |
480 ms |
757496 KB |
Output is correct |
48 |
Correct |
463 ms |
755320 KB |
Output is correct |
49 |
Correct |
476 ms |
755320 KB |
Output is correct |
50 |
Correct |
493 ms |
751480 KB |
Output is correct |
51 |
Correct |
489 ms |
757496 KB |
Output is correct |
52 |
Correct |
493 ms |
757624 KB |
Output is correct |
53 |
Correct |
127 ms |
202744 KB |
Output is correct |
54 |
Correct |
212 ms |
357368 KB |
Output is correct |
55 |
Correct |
331 ms |
517496 KB |
Output is correct |
56 |
Correct |
461 ms |
757496 KB |
Output is correct |
57 |
Correct |
467 ms |
757624 KB |
Output is correct |
58 |
Execution timed out |
509 ms |
757496 KB |
Time limit exceeded |
59 |
Halted |
0 ms |
0 KB |
- |