#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
ll n, k, x, len;
ll l[100002], t[100002], r[100002];
vector<ll> poll = {-1'000'000'000, 1'000'000'000};
ll cnt[300002], sum[300002], w[300002], wsum[300002]; /// 사람 수, 벌금 사람 수
ll ans;
int main(){
scanf("%lld %lld %lld", &n, &k, &x);
for(ll i=1; i<=n; i++){
scanf("%lld %lld %lld", &l[i], &t[i], &r[i]);
r[i]++;
poll.push_back(l[i]), poll.push_back(r[i]);
if(l[i] + t[i] < r[i]) poll.push_back(l[i] + t[i]);
}
sort(poll.begin(), poll.end());
poll.erase(unique(poll.begin(), poll.end()), poll.end());
len = (ll)poll.size();
for(ll i=1; i<=n; i++){
ll lp = lower_bound(poll.begin(), poll.end(), l[i]) - poll.begin();
ll mp = lower_bound(poll.begin(), poll.end(), min(r[i], l[i] + t[i])) - poll.begin();
ll rp = lower_bound(poll.begin(), poll.end(), r[i]) - poll.begin();
cnt[lp]++, cnt[rp]--;
sum[mp]++, sum[rp]--;
}
for(ll i=0; i<len-1; i++){
if(i) cnt[i] += cnt[i-1], sum[i] += sum[i-1];
if(cnt[i] < k) sum[i] = 0;
w[i] = sum[i] * (poll[i+1] - poll[i]);
wsum[i] = (i ? wsum[i-1] : 0LL) + w[i];
}
ll pnt;
for(ll i=1; i<len; i++){
pnt = upper_bound(poll.begin(), poll.end(), poll[i] + x - 1) - 1 - poll.begin();
ans = max(ans, wsum[pnt-1] - wsum[i-1] + (poll[i] + x - poll[pnt]) * sum[pnt]);
}
for(ll i=0; i<len-1; i++){
pnt = upper_bound(poll.begin(), poll.end(), poll[i+1] - x) - 1 - poll.begin();
if(pnt) ans = max(ans, wsum[i] - wsum[pnt] + (poll[pnt+1] - (poll[i+1] - x)) * sum[pnt]);
}
printf("%lld", ans);
}
Compilation message
autobahn.cpp: In function 'int main()':
autobahn.cpp:14:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
14 | scanf("%lld %lld %lld", &n, &k, &x);
| ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
autobahn.cpp:16:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
16 | scanf("%lld %lld %lld", &l[i], &t[i], &r[i]);
| ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
