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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 boolean isPossible(int[] t, int[] d, int w, int m){
  11. 		int n = t.length;
  12. 		long lit = 0;
  13. 		for(int i=0;i<n;i++){
  14. 			if(m == 9){
  15. 				System.out.println((m/d[i])*t[i]);
  16. 			}
  17. 			lit += (((m-1)/d[i])+1)*t[i];
  18. 		}
  19.  
  20. 		// System.out.println(m + " " + lit);
  21. 		return lit>=w;
  22. 	}
  23. 	public static void main (String[] args) throws java.lang.Exception
  24. 	{
  25. 		// your code goes here
  26. 		Scanner sc = new Scanner(System.in);
  27. 		int w = sc.nextInt();
  28. 		int n = sc.nextInt();
  29. 		int[] t = new int[n];
  30. 		int[] d = new int[n];
  31.  
  32. 		for(int i=0;i<n;i++){
  33. 			t[i] = sc.nextInt();
  34. 		}
  35. 		for(int i=0;i<n;i++){
  36. 			d[i] = sc.nextInt();
  37. 		}
  38.  
  39.  
  40. 		int l = 0;
  41. 		int r = (int)1e9;
  42. 		int ans = 0;
  43. 		while(l <= r){
  44. 			int m = l+ (r-l)/2;
  45. 			if(isPossible(t,d,w,m)){
  46. 				ans = m;
  47. 				r = m - 1;
  48. 			}
  49. 			else{
  50. 				l = m + 1;
  51. 			}
  52. 		}
  53. 		System.out.println(ans);
  54. 	}
  55. }
Success #stdin #stdout 0.14s 56624KB
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stdout
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https://ideone.com/paG6yX
language:
Java (HotSpot 12)
created:
1 day ago
visibility:
public

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