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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Main
  9. {
  10. 	public static void main (String[] args) throws java.lang.Exception
  11. 	{
  12. 		Scanner sc = new Scanner(System.in);
  13. 		int n = sc.nextInt();
  14. 		int[] arr = new int[n];
  15. 		for(int i=0;i<n;i++){
  16. 			arr[i] = sc.nextInt();
  17. 		}
  18.  
  19. 		int[] lns = new int[n];
  20. 		int[] rns = new int[n];
  21. 		Stack<Integer> st = new Stack<>();
  22.  
  23. 		for(int i = 0; i < n; i++) {
  24.             while(!st.isEmpty() && arr[st.peek()] >= arr[i]) {
  25.                 st.pop();
  26.             }
  27.             lns[i] = st.isEmpty() ? -1 : st.peek();
  28.             st.push(i);
  29.         }
  30.  
  31. 		st.clear();
  32.  
  33.         for(int i = n - 1; i >= 0; i--) {
  34.             while(!st.isEmpty() && arr[st.peek()] >= arr[i]) {
  35.                 st.pop();
  36.             }
  37.             rns[i] = st.isEmpty() ? n : st.peek();
  38.             st.push(i);
  39.         }
  40.  
  41.  
  42. 		int maxCost = 0;
  43. 		for(int i=0;i<n;i++){
  44. 			int mini = arr[i];
  45. 			int left = lns[i]+1;
  46. 			int right = rns[i]-1;
  47. 			int cost = arr[i]*(right-left+1);
  48. 			maxCost = Math.max(cost, maxCost);
  49. 		}
  50. 		System.out.println(maxCost);
  51. 	}
  52. }
Success #stdin #stdout 0.12s 56668KB
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https://ideone.com/6TPMnP
language:
Java (HotSpot 12)
created:
8 days ago
visibility:
public

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