cp/codeforces/957/d.cc
2025-02-09 15:59:43 -05:00

119 lines
2.3 KiB
C++

#include <bits/stdc++.h> // {{{
// https://codeforces.com/blog/entry/96344
#pragma GCC optimize("O2,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
using namespace std;
template <typename T>
constexpr T MIN = std::numeric_limits<T>::min();
template <typename T>
constexpr T MAX = std::numeric_limits<T>::max();
template <typename T>
[[nodiscard]] static T sc(auto&& x) {
return static_cast<T>(x);
}
template <typename T>
[[nodiscard]] static T sz(auto&& x) {
return static_cast<T>(x.size());
}
template <typename... Args>
void pr(std::format_string<Args...> fmt, Args&&... args) {
std::print(fmt, std::forward<Args>(args)...);
}
template <typename... Args>
void pr(std::format_string<Args...> fmt) {
std::print(fmt);
}
template <typename... Args>
void prln(std::format_string<Args...> fmt, Args&&... args) {
std::println(fmt, std::forward<Args>(args)...);
}
template <typename... Args>
void prln(std::format_string<Args...> fmt) {
std::println(fmt);
}
using ll = long long;
using ld = long double;
template <typename T>
using vec = std::vector<T>;
#define ff first
#define ss second
#define eb emplace_back
#define pb push_back
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define FORI(a, b, c) for (int a = (b); a < (c); ++a)
#define ROFI(a, b, c) for (int a = (b); a > (c); --a)
#define FORLL(a, b, c) for (ll a = (b); a < (c); ++a)
#define ROFLL(a, b, c) for (ll a = (b); a > (c); --a) // }}}
void solve() {
int _, jump, swim;
cin >> _ >> jump >> swim;
string s;
cin >> s;
int get_to = 0;
vec<int> logs;
FORI(i, 0, sz<int>(s)) {
if (s[i] == 'L')
logs.pb(i);
}
logs.pb(sz<int>(s) + 1);
int pos = -1;
bool done = true;
while (pos < sz<int>(s)) {
auto diff = logs[get_to] - pos;
if (jump < diff) {
if ((pos += jump) < sz<int>(s)) {
while (pos < sz<int>(s) && pos < logs[get_to]) {
if (s[pos] == 'C' || swim == 0) {
done = false;
break;
}
++pos;
--swim;
}
if (!done)
break;
} else
break;
} else {
pos = logs[get_to];
}
++get_to;
}
if (done)
prln("YES");
else
prln("NO");
}
int main() { // {{{
cin.tie(nullptr)->sync_with_stdio(false);
int t = 1;
cin >> t;
while (t--) {
solve();
}
return 0;
} //}}}