#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
const int MAXN = 400;
const int INF = 1000000;
int N, ans;
char S[MAXN+10];
int dp[MAXN+10][MAXN+10][MAXN+10][3];
int rcnt[MAXN+10], gcnt[MAXN+10], ycnt[MAXN+10];
vector<int> rpos, gpos, ypos;
int main()
{
int i, j;
scanf("%d%s", &N, S+1);
for(i=1; i<=N; i++)
{
rcnt[i]=rcnt[i-1]; gcnt[i]=gcnt[i-1]; ycnt[i]=ycnt[i-1];
if(S[i]=='R') rpos.push_back(i), rcnt[i]++;
if(S[i]=='G') gpos.push_back(i), gcnt[i]++;
if(S[i]=='Y') ypos.push_back(i), ycnt[i]++;
//printf("%d %d %d\n", rcnt[i], gcnt[i], ycnt[i]);
}
for(int r=0; r<=rpos.size(); r++)
{
for(int g=0; g<=gpos.size(); g++)
{
for(int y=0; y<=ypos.size(); y++)
{
dp[r][g][y][0]=dp[r][g][y][1]=dp[r][g][y][2]=INF;
if(r==0 && g==0 && y==0)
{
dp[r][g][y][0]=dp[r][g][y][1]=dp[r][g][y][2]=0;
continue;
}
int pos=r+g+y;
if(r!=0) dp[r][g][y][0]=min(dp[r-1][g][y][1], dp[r-1][g][y][2])+max(0, gcnt[rpos[r-1]]-g)+max(0, ycnt[rpos[r-1]]-y);
if(g!=0) dp[r][g][y][1]=min(dp[r][g-1][y][0], dp[r][g-1][y][2])+max(0, rcnt[gpos[g-1]]-r)+max(0, ycnt[gpos[g-1]]-y);
if(y!=0) dp[r][g][y][2]=min(dp[r][g][y-1][0], dp[r][g][y-1][1])+max(0, rcnt[ypos[y-1]]-r)+max(0, gcnt[ypos[y-1]]-g);
//printf("%d %d %d : %d %d %d\n", r, g, y, dp[r][g][y][0], dp[r][g][y][1], dp[r][g][y][2]);
}
}
}
ans=min(min(dp[rpos.size()][gpos.size()][ypos.size()][0], dp[rpos.size()][gpos.size()][ypos.size()][1]), dp[rpos.size()][gpos.size()][ypos.size()][2]);
if(ans>=INF) ans=-1;
printf("%d", ans);
}
Compilation message
joi2019_ho_t3.cpp: In function 'int main()':
joi2019_ho_t3.cpp:32:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int r=0; r<=rpos.size(); r++)
~^~~~~~~~~~~~~
joi2019_ho_t3.cpp:34:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int g=0; g<=gpos.size(); g++)
~^~~~~~~~~~~~~
joi2019_ho_t3.cpp:36:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int y=0; y<=ypos.size(); y++)
~^~~~~~~~~~~~~
joi2019_ho_t3.cpp:44:21: warning: unused variable 'pos' [-Wunused-variable]
int pos=r+g+y;
^~~
joi2019_ho_t3.cpp:20:12: warning: unused variable 'j' [-Wunused-variable]
int i, j;
^
joi2019_ho_t3.cpp:22:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%s", &N, S+1);
~~~~~^~~~~~~~~~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
2 ms |
376 KB |
Output is correct |
4 |
Correct |
2 ms |
376 KB |
Output is correct |
5 |
Correct |
2 ms |
504 KB |
Output is correct |
6 |
Correct |
2 ms |
504 KB |
Output is correct |
7 |
Correct |
2 ms |
504 KB |
Output is correct |
8 |
Correct |
2 ms |
504 KB |
Output is correct |
9 |
Correct |
2 ms |
632 KB |
Output is correct |
10 |
Correct |
2 ms |
504 KB |
Output is correct |
11 |
Correct |
2 ms |
504 KB |
Output is correct |
12 |
Correct |
2 ms |
504 KB |
Output is correct |
13 |
Correct |
2 ms |
376 KB |
Output is correct |
14 |
Correct |
2 ms |
504 KB |
Output is correct |
15 |
Correct |
2 ms |
504 KB |
Output is correct |
16 |
Correct |
2 ms |
504 KB |
Output is correct |
17 |
Correct |
2 ms |
256 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
2 ms |
376 KB |
Output is correct |
4 |
Correct |
2 ms |
376 KB |
Output is correct |
5 |
Correct |
2 ms |
504 KB |
Output is correct |
6 |
Correct |
2 ms |
504 KB |
Output is correct |
7 |
Correct |
2 ms |
504 KB |
Output is correct |
8 |
Correct |
2 ms |
504 KB |
Output is correct |
9 |
Correct |
2 ms |
632 KB |
Output is correct |
10 |
Correct |
2 ms |
504 KB |
Output is correct |
11 |
Correct |
2 ms |
504 KB |
Output is correct |
12 |
Correct |
2 ms |
504 KB |
Output is correct |
13 |
Correct |
2 ms |
376 KB |
Output is correct |
14 |
Correct |
2 ms |
504 KB |
Output is correct |
15 |
Correct |
2 ms |
504 KB |
Output is correct |
16 |
Correct |
2 ms |
504 KB |
Output is correct |
17 |
Correct |
2 ms |
256 KB |
Output is correct |
18 |
Correct |
3 ms |
2424 KB |
Output is correct |
19 |
Correct |
3 ms |
1912 KB |
Output is correct |
20 |
Correct |
3 ms |
2296 KB |
Output is correct |
21 |
Correct |
4 ms |
2428 KB |
Output is correct |
22 |
Correct |
3 ms |
1656 KB |
Output is correct |
23 |
Correct |
3 ms |
2172 KB |
Output is correct |
24 |
Correct |
3 ms |
1656 KB |
Output is correct |
25 |
Correct |
6 ms |
3960 KB |
Output is correct |
26 |
Correct |
7 ms |
4216 KB |
Output is correct |
27 |
Correct |
5 ms |
3064 KB |
Output is correct |
28 |
Correct |
4 ms |
2424 KB |
Output is correct |
29 |
Correct |
4 ms |
2296 KB |
Output is correct |
30 |
Correct |
5 ms |
2300 KB |
Output is correct |
31 |
Correct |
3 ms |
2040 KB |
Output is correct |
32 |
Correct |
4 ms |
2428 KB |
Output is correct |
33 |
Correct |
5 ms |
3832 KB |
Output is correct |
34 |
Correct |
4 ms |
3576 KB |
Output is correct |
35 |
Correct |
4 ms |
2680 KB |
Output is correct |
36 |
Correct |
4 ms |
1912 KB |
Output is correct |
37 |
Correct |
4 ms |
1784 KB |
Output is correct |
38 |
Correct |
4 ms |
2168 KB |
Output is correct |
39 |
Correct |
4 ms |
2424 KB |
Output is correct |
40 |
Correct |
2 ms |
376 KB |
Output is correct |
41 |
Correct |
3 ms |
2168 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
129 ms |
163000 KB |
Output is correct |
3 |
Correct |
142 ms |
162220 KB |
Output is correct |
4 |
Correct |
146 ms |
162964 KB |
Output is correct |
5 |
Correct |
121 ms |
163068 KB |
Output is correct |
6 |
Correct |
119 ms |
162944 KB |
Output is correct |
7 |
Correct |
119 ms |
162140 KB |
Output is correct |
8 |
Correct |
118 ms |
162404 KB |
Output is correct |
9 |
Correct |
118 ms |
161400 KB |
Output is correct |
10 |
Correct |
120 ms |
163052 KB |
Output is correct |
11 |
Correct |
121 ms |
163100 KB |
Output is correct |
12 |
Correct |
33 ms |
44024 KB |
Output is correct |
13 |
Correct |
58 ms |
77148 KB |
Output is correct |
14 |
Correct |
81 ms |
111480 KB |
Output is correct |
15 |
Correct |
120 ms |
163064 KB |
Output is correct |
16 |
Correct |
120 ms |
163064 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
2 ms |
376 KB |
Output is correct |
4 |
Correct |
2 ms |
376 KB |
Output is correct |
5 |
Correct |
2 ms |
504 KB |
Output is correct |
6 |
Correct |
2 ms |
504 KB |
Output is correct |
7 |
Correct |
2 ms |
504 KB |
Output is correct |
8 |
Correct |
2 ms |
504 KB |
Output is correct |
9 |
Correct |
2 ms |
632 KB |
Output is correct |
10 |
Correct |
2 ms |
504 KB |
Output is correct |
11 |
Correct |
2 ms |
504 KB |
Output is correct |
12 |
Correct |
2 ms |
504 KB |
Output is correct |
13 |
Correct |
2 ms |
376 KB |
Output is correct |
14 |
Correct |
2 ms |
504 KB |
Output is correct |
15 |
Correct |
2 ms |
504 KB |
Output is correct |
16 |
Correct |
2 ms |
504 KB |
Output is correct |
17 |
Correct |
2 ms |
256 KB |
Output is correct |
18 |
Correct |
3 ms |
2424 KB |
Output is correct |
19 |
Correct |
3 ms |
1912 KB |
Output is correct |
20 |
Correct |
3 ms |
2296 KB |
Output is correct |
21 |
Correct |
4 ms |
2428 KB |
Output is correct |
22 |
Correct |
3 ms |
1656 KB |
Output is correct |
23 |
Correct |
3 ms |
2172 KB |
Output is correct |
24 |
Correct |
3 ms |
1656 KB |
Output is correct |
25 |
Correct |
6 ms |
3960 KB |
Output is correct |
26 |
Correct |
7 ms |
4216 KB |
Output is correct |
27 |
Correct |
5 ms |
3064 KB |
Output is correct |
28 |
Correct |
4 ms |
2424 KB |
Output is correct |
29 |
Correct |
4 ms |
2296 KB |
Output is correct |
30 |
Correct |
5 ms |
2300 KB |
Output is correct |
31 |
Correct |
3 ms |
2040 KB |
Output is correct |
32 |
Correct |
4 ms |
2428 KB |
Output is correct |
33 |
Correct |
5 ms |
3832 KB |
Output is correct |
34 |
Correct |
4 ms |
3576 KB |
Output is correct |
35 |
Correct |
4 ms |
2680 KB |
Output is correct |
36 |
Correct |
4 ms |
1912 KB |
Output is correct |
37 |
Correct |
4 ms |
1784 KB |
Output is correct |
38 |
Correct |
4 ms |
2168 KB |
Output is correct |
39 |
Correct |
4 ms |
2424 KB |
Output is correct |
40 |
Correct |
2 ms |
376 KB |
Output is correct |
41 |
Correct |
3 ms |
2168 KB |
Output is correct |
42 |
Correct |
2 ms |
376 KB |
Output is correct |
43 |
Correct |
129 ms |
163000 KB |
Output is correct |
44 |
Correct |
142 ms |
162220 KB |
Output is correct |
45 |
Correct |
146 ms |
162964 KB |
Output is correct |
46 |
Correct |
121 ms |
163068 KB |
Output is correct |
47 |
Correct |
119 ms |
162944 KB |
Output is correct |
48 |
Correct |
119 ms |
162140 KB |
Output is correct |
49 |
Correct |
118 ms |
162404 KB |
Output is correct |
50 |
Correct |
118 ms |
161400 KB |
Output is correct |
51 |
Correct |
120 ms |
163052 KB |
Output is correct |
52 |
Correct |
121 ms |
163100 KB |
Output is correct |
53 |
Correct |
33 ms |
44024 KB |
Output is correct |
54 |
Correct |
58 ms |
77148 KB |
Output is correct |
55 |
Correct |
81 ms |
111480 KB |
Output is correct |
56 |
Correct |
120 ms |
163064 KB |
Output is correct |
57 |
Correct |
120 ms |
163064 KB |
Output is correct |
58 |
Correct |
77 ms |
77232 KB |
Output is correct |
59 |
Correct |
91 ms |
97796 KB |
Output is correct |
60 |
Correct |
85 ms |
88952 KB |
Output is correct |
61 |
Correct |
83 ms |
85884 KB |
Output is correct |
62 |
Correct |
119 ms |
160760 KB |
Output is correct |
63 |
Correct |
120 ms |
160400 KB |
Output is correct |
64 |
Correct |
120 ms |
150136 KB |
Output is correct |
65 |
Correct |
123 ms |
138488 KB |
Output is correct |
66 |
Correct |
83 ms |
87160 KB |
Output is correct |
67 |
Correct |
80 ms |
83960 KB |
Output is correct |
68 |
Correct |
85 ms |
89848 KB |
Output is correct |
69 |
Correct |
84 ms |
86572 KB |
Output is correct |
70 |
Correct |
88 ms |
93688 KB |
Output is correct |
71 |
Correct |
82 ms |
85092 KB |
Output is correct |
72 |
Correct |
37 ms |
42104 KB |
Output is correct |
73 |
Correct |
5 ms |
2940 KB |
Output is correct |