#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<ll,ll> pl;
typedef pair<int,int> pii;
typedef tuple<int,int,int> tt;
#define all(a) a.begin(), a.end()
#define filter(a) a.erase(unique(all(a)), a.end())
vector<int> s1, s2, s3, v1, v2, v3;
int ans = INT_MAX;
void btr (int cur) {
if (cur == s1.size() + s2.size() + s3.size()) {
int sum = 0;
for (int i = 0; i < v1.size(); i++) sum += abs(v1[i] - s1[i]);
for (int i = 0; i < v2.size(); i++) sum += abs(v2[i] - s2[i]);
for (int i = 0; i < v3.size(); i++) sum += abs(v3[i] - s3[i]);
return ans = min(ans, sum / 2), void();
}
if (v1.size() < s1.size()) {
if (v1.empty() || v1.back() + 1 != cur) {
v1.push_back(cur);
btr(cur + 1);
v1.pop_back();
}
}
if (v2.size() < s2.size()) {
if (v2.empty() || v2.back() + 1 != cur) {
v2.push_back(cur);
btr(cur + 1);
v2.pop_back();
}
}
if (v3.size() < s3.size()) {
if (v3.empty() || v3.back() + 1 != cur) {
v3.push_back(cur);
btr(cur + 1);
v3.pop_back();
}
}
}
int main()
{
ios::sync_with_stdio(0);
cin.tie(0);
int n; cin >> n;
vector<char> s(n);
for (int i = 0; i < n; i++) {
cin >> s[i];
if (s[i] == 'R') s1.push_back(i);
else if (s[i] == 'G') s2.push_back(i);
else if (s[i] == 'Y') s3.push_back(i);
}
btr(0);
cout << (ans == INT_MAX ? -1 : ans);
return 0;
}
Compilation message
joi2019_ho_t3.cpp: In function 'void btr(int)':
joi2019_ho_t3.cpp:17:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
17 | if (cur == s1.size() + s2.size() + s3.size()) {
| ~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
joi2019_ho_t3.cpp:19:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
19 | for (int i = 0; i < v1.size(); i++) sum += abs(v1[i] - s1[i]);
| ~~^~~~~~~~~~~
joi2019_ho_t3.cpp:20:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
20 | for (int i = 0; i < v2.size(); i++) sum += abs(v2[i] - s2[i]);
| ~~^~~~~~~~~~~
joi2019_ho_t3.cpp:21:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
21 | for (int i = 0; i < v3.size(); i++) sum += abs(v3[i] - s3[i]);
| ~~^~~~~~~~~~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
344 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
1 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
456 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
12 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
344 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
1 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
456 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
12 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
344 KB |
Output is correct |
3 |
Correct |
1 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
1 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
456 KB |
Output is correct |
9 |
Correct |
1 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
460 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
456 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
344 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
1 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
456 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
12 |
Halted |
0 ms |
0 KB |
- |