#include<bits/stdc++.h>
using namespace std;
#define sz(x) (int)x.size()
const int N = 201;
int f[N][N][N][3];
int main() {
ios_base::sync_with_stdio(0);
cin.tie(0); cout.tie(0);
int n; cin >> n;
string s; cin >> s;
vector<int> pos[3];
vector<int> ord[3];
for(int i = 0 ; i < n ; ++i) {
if (s[i] == 'R') pos[0].push_back(i + 1);
if (s[i] == 'G') pos[1].push_back(i + 1);
if (s[i] == 'Y') pos[2].push_back(i + 1);
}
if (sz(pos[0]) > (n + 1) / 2) return 0 * puts("-1");
if (sz(pos[1]) > (n + 1) / 2) return 0 * puts("-1");
if (sz(pos[2]) > (n + 1) / 2) return 0 * puts("-1");
memset(f,0x3f3f3f3f,sizeof f);
if (sz(pos[0])) f[1][0][0][0] = pos[0][0] - 1;
if (sz(pos[1])) f[0][1][0][1] = pos[1][0] - 1;
if (sz(pos[2])) f[0][0][1][2] = pos[2][0] - 1;
for(int i = 0 ; i < 3 ; ++i) {
for(int j = 0 ; j <= n ; ++j)
ord[i].push_back(upper_bound(pos[i].begin(),pos[i].end(),j) - pos[i].begin());
pos[i].insert(pos[i].begin(),0);
}
for(int a = 0 ; a < sz(pos[0]) ; ++a)
for(int b = 0 ; b < sz(pos[1]) ; ++b)
for(int c = 0 ; c < sz(pos[2]) ; ++c) {
int P = a + b + c;
if (P < 2) continue;
for(int x = 0 ; x < 3 ; ++x) {
int na = a - (x == 0);
int nb = b - (x == 1);
int nc = c - (x == 2);
if (na < 0) continue;
if (nb < 0) continue;
if (nc < 0) continue;
int real_pos;
if (x == 0) real_pos = pos[0][a] + max(0,b - ord[1][pos[0][a]]) + max(0,c - ord[2][pos[0][a]]);
if (x == 1) real_pos = pos[1][b] + max(0,a - ord[0][pos[1][b]]) + max(0,c - ord[2][pos[1][b]]);
if (x == 2) real_pos = pos[2][c] + max(0,a - ord[0][pos[2][c]]) + max(0,b - ord[1][pos[2][c]]);
f[a][b][c][x] = min(f[na][nb][nc][0 + (x == 0)],f[na][nb][nc][2 - (x == 2)]) + abs(real_pos - P);
}
}
int ans = 0x3f3f3f3f;
ans = min(ans,f[pos[0].size() - 1][pos[1].size() - 1][pos[2].size() - 1][0]);
ans = min(ans,f[pos[0].size() - 1][pos[1].size() - 1][pos[2].size() - 1][1]);
ans = min(ans,f[pos[0].size() - 1][pos[1].size() - 1][pos[2].size() - 1][2]);
cout << ans << endl;
}
Compilation message
joi2019_ho_t3.cpp: In function 'int main()':
joi2019_ho_t3.cpp:65:105: warning: 'real_pos' may be used uninitialized in this function [-Wmaybe-uninitialized]
f[a][b][c][x] = min(f[na][nb][nc][0 + (x == 0)],f[na][nb][nc][2 - (x == 2)]) + abs(real_pos - P);
~~~~~~~~~^~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
84 ms |
95608 KB |
Output is correct |
| 2 |
Correct |
93 ms |
95736 KB |
Output is correct |
| 3 |
Correct |
87 ms |
95736 KB |
Output is correct |
| 4 |
Correct |
84 ms |
95796 KB |
Output is correct |
| 5 |
Correct |
86 ms |
95736 KB |
Output is correct |
| 6 |
Correct |
83 ms |
95708 KB |
Output is correct |
| 7 |
Correct |
87 ms |
95736 KB |
Output is correct |
| 8 |
Correct |
86 ms |
95680 KB |
Output is correct |
| 9 |
Correct |
83 ms |
95736 KB |
Output is correct |
| 10 |
Correct |
2 ms |
380 KB |
Output is correct |
| 11 |
Correct |
85 ms |
95692 KB |
Output is correct |
| 12 |
Correct |
84 ms |
95736 KB |
Output is correct |
| 13 |
Correct |
2 ms |
376 KB |
Output is correct |
| 14 |
Correct |
93 ms |
95708 KB |
Output is correct |
| 15 |
Correct |
84 ms |
95736 KB |
Output is correct |
| 16 |
Correct |
2 ms |
376 KB |
Output is correct |
| 17 |
Correct |
2 ms |
376 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
84 ms |
95608 KB |
Output is correct |
| 2 |
Correct |
93 ms |
95736 KB |
Output is correct |
| 3 |
Correct |
87 ms |
95736 KB |
Output is correct |
| 4 |
Correct |
84 ms |
95796 KB |
Output is correct |
| 5 |
Correct |
86 ms |
95736 KB |
Output is correct |
| 6 |
Correct |
83 ms |
95708 KB |
Output is correct |
| 7 |
Correct |
87 ms |
95736 KB |
Output is correct |
| 8 |
Correct |
86 ms |
95680 KB |
Output is correct |
| 9 |
Correct |
83 ms |
95736 KB |
Output is correct |
| 10 |
Correct |
2 ms |
380 KB |
Output is correct |
| 11 |
Correct |
85 ms |
95692 KB |
Output is correct |
| 12 |
Correct |
84 ms |
95736 KB |
Output is correct |
| 13 |
Correct |
2 ms |
376 KB |
Output is correct |
| 14 |
Correct |
93 ms |
95708 KB |
Output is correct |
| 15 |
Correct |
84 ms |
95736 KB |
Output is correct |
| 16 |
Correct |
2 ms |
376 KB |
Output is correct |
| 17 |
Correct |
2 ms |
376 KB |
Output is correct |
| 18 |
Correct |
94 ms |
95648 KB |
Output is correct |
| 19 |
Correct |
83 ms |
95736 KB |
Output is correct |
| 20 |
Correct |
84 ms |
95600 KB |
Output is correct |
| 21 |
Correct |
84 ms |
95732 KB |
Output is correct |
| 22 |
Correct |
84 ms |
95736 KB |
Output is correct |
| 23 |
Correct |
83 ms |
95608 KB |
Output is correct |
| 24 |
Correct |
85 ms |
95680 KB |
Output is correct |
| 25 |
Correct |
2 ms |
376 KB |
Output is correct |
| 26 |
Correct |
2 ms |
376 KB |
Output is correct |
| 27 |
Correct |
85 ms |
95752 KB |
Output is correct |
| 28 |
Correct |
83 ms |
95608 KB |
Output is correct |
| 29 |
Correct |
85 ms |
95736 KB |
Output is correct |
| 30 |
Correct |
84 ms |
95736 KB |
Output is correct |
| 31 |
Correct |
85 ms |
95608 KB |
Output is correct |
| 32 |
Correct |
161 ms |
95736 KB |
Output is correct |
| 33 |
Correct |
2 ms |
504 KB |
Output is correct |
| 34 |
Correct |
2 ms |
376 KB |
Output is correct |
| 35 |
Correct |
84 ms |
95608 KB |
Output is correct |
| 36 |
Correct |
94 ms |
95608 KB |
Output is correct |
| 37 |
Correct |
83 ms |
95608 KB |
Output is correct |
| 38 |
Correct |
94 ms |
95608 KB |
Output is correct |
| 39 |
Correct |
84 ms |
95736 KB |
Output is correct |
| 40 |
Correct |
2 ms |
376 KB |
Output is correct |
| 41 |
Correct |
2 ms |
376 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
83 ms |
95600 KB |
Output is correct |
| 2 |
Correct |
90 ms |
95664 KB |
Output is correct |
| 3 |
Correct |
89 ms |
95736 KB |
Output is correct |
| 4 |
Correct |
100 ms |
95736 KB |
Output is correct |
| 5 |
Correct |
90 ms |
95864 KB |
Output is correct |
| 6 |
Correct |
89 ms |
95732 KB |
Output is correct |
| 7 |
Correct |
90 ms |
95736 KB |
Output is correct |
| 8 |
Correct |
89 ms |
95736 KB |
Output is correct |
| 9 |
Correct |
91 ms |
95656 KB |
Output is correct |
| 10 |
Correct |
88 ms |
95736 KB |
Output is correct |
| 11 |
Correct |
89 ms |
95704 KB |
Output is correct |
| 12 |
Correct |
86 ms |
95796 KB |
Output is correct |
| 13 |
Correct |
85 ms |
95736 KB |
Output is correct |
| 14 |
Correct |
87 ms |
95736 KB |
Output is correct |
| 15 |
Correct |
2 ms |
376 KB |
Output is correct |
| 16 |
Correct |
2 ms |
376 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
84 ms |
95608 KB |
Output is correct |
| 2 |
Correct |
93 ms |
95736 KB |
Output is correct |
| 3 |
Correct |
87 ms |
95736 KB |
Output is correct |
| 4 |
Correct |
84 ms |
95796 KB |
Output is correct |
| 5 |
Correct |
86 ms |
95736 KB |
Output is correct |
| 6 |
Correct |
83 ms |
95708 KB |
Output is correct |
| 7 |
Correct |
87 ms |
95736 KB |
Output is correct |
| 8 |
Correct |
86 ms |
95680 KB |
Output is correct |
| 9 |
Correct |
83 ms |
95736 KB |
Output is correct |
| 10 |
Correct |
2 ms |
380 KB |
Output is correct |
| 11 |
Correct |
85 ms |
95692 KB |
Output is correct |
| 12 |
Correct |
84 ms |
95736 KB |
Output is correct |
| 13 |
Correct |
2 ms |
376 KB |
Output is correct |
| 14 |
Correct |
93 ms |
95708 KB |
Output is correct |
| 15 |
Correct |
84 ms |
95736 KB |
Output is correct |
| 16 |
Correct |
2 ms |
376 KB |
Output is correct |
| 17 |
Correct |
2 ms |
376 KB |
Output is correct |
| 18 |
Correct |
94 ms |
95648 KB |
Output is correct |
| 19 |
Correct |
83 ms |
95736 KB |
Output is correct |
| 20 |
Correct |
84 ms |
95600 KB |
Output is correct |
| 21 |
Correct |
84 ms |
95732 KB |
Output is correct |
| 22 |
Correct |
84 ms |
95736 KB |
Output is correct |
| 23 |
Correct |
83 ms |
95608 KB |
Output is correct |
| 24 |
Correct |
85 ms |
95680 KB |
Output is correct |
| 25 |
Correct |
2 ms |
376 KB |
Output is correct |
| 26 |
Correct |
2 ms |
376 KB |
Output is correct |
| 27 |
Correct |
85 ms |
95752 KB |
Output is correct |
| 28 |
Correct |
83 ms |
95608 KB |
Output is correct |
| 29 |
Correct |
85 ms |
95736 KB |
Output is correct |
| 30 |
Correct |
84 ms |
95736 KB |
Output is correct |
| 31 |
Correct |
85 ms |
95608 KB |
Output is correct |
| 32 |
Correct |
161 ms |
95736 KB |
Output is correct |
| 33 |
Correct |
2 ms |
504 KB |
Output is correct |
| 34 |
Correct |
2 ms |
376 KB |
Output is correct |
| 35 |
Correct |
84 ms |
95608 KB |
Output is correct |
| 36 |
Correct |
94 ms |
95608 KB |
Output is correct |
| 37 |
Correct |
83 ms |
95608 KB |
Output is correct |
| 38 |
Correct |
94 ms |
95608 KB |
Output is correct |
| 39 |
Correct |
84 ms |
95736 KB |
Output is correct |
| 40 |
Correct |
2 ms |
376 KB |
Output is correct |
| 41 |
Correct |
2 ms |
376 KB |
Output is correct |
| 42 |
Correct |
83 ms |
95600 KB |
Output is correct |
| 43 |
Correct |
90 ms |
95664 KB |
Output is correct |
| 44 |
Correct |
89 ms |
95736 KB |
Output is correct |
| 45 |
Correct |
100 ms |
95736 KB |
Output is correct |
| 46 |
Correct |
90 ms |
95864 KB |
Output is correct |
| 47 |
Correct |
89 ms |
95732 KB |
Output is correct |
| 48 |
Correct |
90 ms |
95736 KB |
Output is correct |
| 49 |
Correct |
89 ms |
95736 KB |
Output is correct |
| 50 |
Correct |
91 ms |
95656 KB |
Output is correct |
| 51 |
Correct |
88 ms |
95736 KB |
Output is correct |
| 52 |
Correct |
89 ms |
95704 KB |
Output is correct |
| 53 |
Correct |
86 ms |
95796 KB |
Output is correct |
| 54 |
Correct |
85 ms |
95736 KB |
Output is correct |
| 55 |
Correct |
87 ms |
95736 KB |
Output is correct |
| 56 |
Correct |
2 ms |
376 KB |
Output is correct |
| 57 |
Correct |
2 ms |
376 KB |
Output is correct |
| 58 |
Correct |
147 ms |
95680 KB |
Output is correct |
| 59 |
Correct |
151 ms |
95772 KB |
Output is correct |
| 60 |
Correct |
146 ms |
95652 KB |
Output is correct |
| 61 |
Correct |
146 ms |
95628 KB |
Output is correct |
| 62 |
Correct |
2 ms |
348 KB |
Output is correct |
| 63 |
Correct |
120 ms |
95668 KB |
Output is correct |
| 64 |
Correct |
123 ms |
95884 KB |
Output is correct |
| 65 |
Correct |
132 ms |
95700 KB |
Output is correct |
| 66 |
Correct |
146 ms |
95736 KB |
Output is correct |
| 67 |
Correct |
148 ms |
95656 KB |
Output is correct |
| 68 |
Correct |
151 ms |
95704 KB |
Output is correct |
| 69 |
Correct |
150 ms |
95820 KB |
Output is correct |
| 70 |
Correct |
149 ms |
95668 KB |
Output is correct |
| 71 |
Correct |
149 ms |
95716 KB |
Output is correct |
| 72 |
Correct |
2 ms |
376 KB |
Output is correct |
| 73 |
Correct |
2 ms |
376 KB |
Output is correct |
