pro

#include <stdio.h>

int main(){
    int N,a[1000];

    while(scanf("%d",&N)==1){
        for(int i = 0;i<N;++i) scanf("%d",&a[i]);

        int ans = 0;

        for(int i = 1;i<N;++i)
            for(int j = 0;j<i;++j)
                if(a[j]>a[i])
                    ++ans;

        printf("Minimum exchange operations : %d\n",ans);
    }

    return 0;
}