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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main(){
  5. 	int n; // declare n to be a number
  6. 	cin>>n; // read n from the input
  7. 	// declare "books" to be a sequence of numbers of length n:
  8. 	vector<int> books(n);
  9. 	for(int i=0;i<n;i=i+1)
  10. 		cin>>books[i]; // read books from the input
  11. 	// declare current to be a sequence of numbers of length n+1;
  12. 	// initially, all elements are 0
  13. 	vector<int> current(n,0);
  14. 	int result=1; // declare result to be a number which is initially 1
  15. 	for(int i=0;i<n;i=i+1){ // for each i from 0 to n in turn
  16. 		result=max(result,current[i]);
  17. 		for(int j=0;j<i;j=j+1){ // for each j from 0 to i-1 in turn
  18. 			// if the number of the book at position i is larger
  19. 			// than the number of the book at position j:
  20. 			if(books[i]>books[j]){
  21. 				// if current at position [i] is smaller
  22. 				// than current at position j
  23. 				if(current[i]<current[j]+1){
  24. 					// update current at position i to current at position j:
  25. 					current[i]=current[j]+1;
  26. 				}
  27. 			}
  28. 		}
  29. 	}
  30. 	cout<<n-result<<'\n'; // write n-result to the output
  31. }
  32.  
Success #stdin #stdout 0s 3460KB
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https://ideone.com/Pom7Ed
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
secret

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