#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
#define F first
#define S second
#define pb push_back
#define endl "\n"
#define all(x) x.begin(), x.end()
const int M = 3000007;
const ll inf = 2e9;
const ll mod = 1e9 + 7;
const double pi = acos(-1);
const double eps = 1e-6;
const int dx[] = {0, -1, 0, 1}, dy[] = {1, 0, -1, 0};
const int block = 320;
vector <ll> v;
ll n, k, x, l[M], t[M], r[M], cnt[M], tot[M], pref[M], ans;
void add(ll pos){
if(pos < 0 || pos > 1e9) return;
v.pb(pos);
v.pb(pos + x - 1);
v.pb(pos - x + 1);
return;
}
ll get(ll val){
return lower_bound(all(v), val) - v.begin() + 1;
}
int main(){
ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
cin >> n >> k >> x;
for(int i = 1; i <= n; ++i){
cin >> l[i] >> t[i] >> r[i];
assert(l[i] + t[i] <= r[i]);
for(int j = -2; j <= 2; ++j){
add(l[i] + j);
add(l[i] + t[i] + j);
add(r[i] + j);
}
}
sort(all(v));
v.erase(unique(all(v)), v.end());
for(int i = 1; i <= n; ++i){
int to = get(r[i] + 1);
++cnt[get(l[i])];
--cnt[to];
++tot[get(l[i] + t[i])];
--tot[to];
}
for(int i = 1; i <= v.size() + 1; ++i) cnt[i] += cnt[i - 1], tot[i] += tot[i - 1];
for(int i = 1; i <= v.size(); ++i){
pref[i] = pref[i - 1];
if(cnt[i - 1] >= k) pref[i] += (v[i - 1] - v[i - 2]) * tot[i - 1]; // [l, r[
}
for(int i = 0; i < v.size(); ++i){
int posi = i + 1;
int posj = get(v[i] + x - 1);
if(posj > v.size()) break;
ans = max(ans, pref[posj] - pref[posi] + (cnt[posj] >= k) * tot[posj]);
}
cout << ans << endl;
return 0;
}
Compilation message
autobahn.cpp: In function 'int main()':
autobahn.cpp:58:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
58 | for(int i = 1; i <= v.size() + 1; ++i) cnt[i] += cnt[i - 1], tot[i] += tot[i - 1];
| ~~^~~~~~~~~~~~~~~
autobahn.cpp:60:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
60 | for(int i = 1; i <= v.size(); ++i){
| ~~^~~~~~~~~~~
autobahn.cpp:65:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
65 | for(int i = 0; i < v.size(); ++i){
| ~~^~~~~~~~~~
autobahn.cpp:69:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
69 | if(posj > v.size()) break;
| ~~~~~^~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
3 ms |
468 KB |
Execution killed with signal 6 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
3 ms |
468 KB |
Execution killed with signal 6 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
3 ms |
468 KB |
Execution killed with signal 6 |
| 2 |
Halted |
0 ms |
0 KB |
- |
