이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include <bits/stdc++.h>
using namespace std;
int N, K;
string str;
int main() {
cin >> N >> K;
cin >> str;
vector<bool> arr(N+1);
for (int i = 1; i <= N; i++) {
arr[i] = (str[i-1] == 'c');
}
stack<array<int, 3>> s; // index, # of C, # of B
vector<vector<int>> ans;
for (int i = 1; i <= N; i++) {
if (!s.empty()) {
s.push({i, s.top()[1]+arr[i], s.top()[2]+!arr[i]});
}
else {
s.push({i, arr[i], !arr[i]});
}
while (!s.empty() && s.top()[1] && s.top()[2] >= K) {
vector<int> cur;
for (int i = 0; i < K+1; i++) {
cur.push_back(s.top()[0]);
s.pop();
}
reverse(cur.begin(), cur.end());
ans.push_back(cur);
}
}
reverse(ans.begin(), ans.end());
for (auto cur: ans) {
for (auto v: cur) {
cout << v << " ";
} cout << "\n";
}
}
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