#include <iostream>
using namespace std;
int main(){
	int b;
	while(cin>>b){
		int c = 0;
		int a[b];
		for(int h = 0;h<b;h++){
			cin>>a[h];
		}
	
		for(int i = 0;i<b;i++){
				bool flag = false;
			for(int j =0;j<b-1;j++){
				if(a[j]>a[j+1]){
					swap(a[j],a[j+1]);
					c++;
				}
			
			}
		for(int o = 1;o<b;o++){
			if(a[o]<a[o-1]){
				flag = true;
			}
		}
		if(flag==false){
			break;
		}	
		}
		
		cout<<"Minimum exchange operations : "<< c <<'\n';
	}
}