118 lines
2 KiB
C++
118 lines
2 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... Args>
|
|
void dbg(std::string const &str, Args &&...args) {
|
|
std::cout << std::vformat(str, std::make_format_args(args...));
|
|
}
|
|
|
|
template <typename T>
|
|
void dbg(T const &t) {
|
|
std::cout << t;
|
|
}
|
|
|
|
template <std::ranges::range T>
|
|
void dbgln(T const &t) {
|
|
if constexpr (std::is_convertible_v<T, char const *>) {
|
|
std::cout << t << '\n';
|
|
} else {
|
|
for (auto const &e : t) {
|
|
std::cout << e << ' ';
|
|
}
|
|
std::cout << '\n';
|
|
}
|
|
}
|
|
|
|
void dbgln() {
|
|
std::cout << '\n';
|
|
}
|
|
|
|
template <typename... Args>
|
|
void dbgln(std::string const &str, Args &&...args) {
|
|
dbg(str, std::forward<Args>(args)...);
|
|
cout << '\n';
|
|
}
|
|
|
|
template <typename T>
|
|
void dbgln(T const &t) {
|
|
dbg(t);
|
|
cout << '\n';
|
|
}
|
|
|
|
template <typename T>
|
|
constexpr T MIN = std::numeric_limits<T>::min();
|
|
|
|
template <typename T>
|
|
constexpr T MAX = std::numeric_limits<T>::min();
|
|
|
|
template <typename T>
|
|
static T sc(auto &&x) {
|
|
return static_cast<T>(x);
|
|
}
|
|
|
|
static void YES() {
|
|
dbgln("YES");
|
|
}
|
|
static void NO() {
|
|
dbgln("NO");
|
|
}
|
|
|
|
#define ff first
|
|
#define ss second
|
|
#define eb emplace_back
|
|
#define ll long long
|
|
#define ld long double
|
|
#define vec vector
|
|
#define endl '\n'
|
|
|
|
#define all(x) (x).begin(), (x).end()
|
|
#define rall(x) (r).rbegin(), (x).rend()
|
|
#define sz(x) static_cast<int>((x).size())
|
|
#define FOR(a, b, c) for (int(a) = (b); (a) < (c); ++(a))
|
|
#define ROF(a, b, c) for (int(a) = (b); (a) > (c); --(a))
|
|
|
|
std::random_device rd;
|
|
std::mt19937 gen(rd());
|
|
|
|
void solve() {
|
|
int n, s, m;
|
|
cin >> n >> s >> m;
|
|
|
|
int prev = 0;
|
|
bool can = 0;
|
|
|
|
while (n--) {
|
|
int l, r;
|
|
cin >> l >> r;
|
|
if (l - prev >= s)
|
|
can |= 1;
|
|
prev = r;
|
|
}
|
|
|
|
if (m - prev >= s)
|
|
can |= 1;
|
|
|
|
if (can)
|
|
YES();
|
|
else
|
|
NO();
|
|
}
|
|
|
|
int main() {
|
|
cin.tie(nullptr)->sync_with_stdio(false);
|
|
|
|
int t = 1;
|
|
cin >> t;
|
|
|
|
while (t--) {
|
|
solve();
|
|
}
|
|
|
|
return 0;
|
|
}
|