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  1.  
  2. import java.util.*;
  3. import java.lang.*;
  4. import java.io.*;
  5.  
  6. class Ideone
  7. {
  8. 	 public static void main(String[] args) {
  9.         int startSum = 1;
  10.         int years = 1;
  11.         int k = 1;
  12.         int currentSum = startSum;
  13.  
  14.         Scanner scanner = new Scanner(System.in);
  15.         int sum = scanner.nextInt();
  16.         while (currentSum < sum){
  17.             years++;
  18.             k = k*2 + years;
  19.             currentSum += k;
  20.         }
  21.         System.out.println(years);
  22.     }
  23. }
Success #stdin #stdout 0.14s 321280KB
comments (?)
stdin 
448
stdout 
7
https://ideone.com/e9Jpc2
language:
Java (HotSpot 12)
created:
8 years ago
visibility:
public

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