#include<iostream>
#include<algorithm>
#include<vector>

int main(){
    int N;
    std::cin >> N;
    std::vector<int> v(N);
    for(int i = 0; i < N; i++){
        std::cin >> v[i];
    }

    int high = 1e9;
    int low = -1e9;
    while(high - low > 1){
        long long mid = (high + low) / 2;

        long long cnt = 0;
        for(int i = 0; i < N; i++){
            cnt += mid - v[i];
        }
        
        if(cnt >= 0)high = mid;
        else low = mid;
    }

    long long ans = 0;
    for(int i = 0; i < N; i++){
       ans += std::abs(high - v[i]); 
    }
    std::cout << ans << std::endl;
}