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Java-based LeetCode algorithm problem solutions, regularly updated
package g2001_2100.s2054_two_best_non_overlapping_events;
// #Medium #Array #Dynamic_Programming #Sorting #Binary_Search #Heap_Priority_Queue
// #2022_05_24_Time_58_ms(70.59%)_Space_109.2_MB_(88.24%)
import java.util.Arrays;
public class Solution {
public int maxTwoEvents(int[][] events) {
Arrays.sort(events, (a, b) -> a[0] - b[0]);
int[] max = new int[events.length];
for (int i = events.length - 1; i >= 0; i--) {
if (i == events.length - 1) {
max[i] = events[i][2];
} else {
max[i] = Math.max(events[i][2], max[i + 1]);
}
}
int ans = 0;
for (int i = 0; i < events.length; i++) {
int end = events[i][1];
int left = i + 1;
int right = events.length;
while (left < right) {
int mid = left + (right - left) / 2;
if (events[mid][0] <= end) {
left = mid + 1;
} else {
right = mid;
}
}
int value = events[i][2];
if (right >= 0 && right < events.length) {
value += max[right];
}
ans = Math.max(ans, value);
}
return ans;
}
}