50 lines
974 B
C++
50 lines
974 B
C++
#include <algorithm>
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#include <cstdint>
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#include <iostream>
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#include <vector>
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#define let auto
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#define fn auto
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typedef size_t usize;
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using namespace std;
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fn fastio() {
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ios::sync_with_stdio(false);
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cin.tie(nullptr);
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}
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fn main() -> int {
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usize n, k;
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cin >> n >> k;
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let line = vector<char>(n);
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let valid = vector<bool>(n, false);
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for (usize i = 0; i < n; i++) {
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char t;
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cin >> t;
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line[i] = t;
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if (t == 'H') {
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valid[i] = true;
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}
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}
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// left assoc
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let count = 0;
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for (usize i = 0; i < n; i++) {
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if (line[i] == 'P') {
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let left = i >= k ? i - k : 0;
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let right = i + k >= n ? n - 1 : i + k;
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for (usize j = left; j <= right; j++) {
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if (valid[j]) {
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count += 1;
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valid[j] = false;
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break;
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}
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}
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}
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}
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cout << count << endl;
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} |