TREES C++

#include<bits/stdc++.h>

using namespace std;
#define maxN 10000000

int a[maxN],n;

void ReadData()
{
    cin>>n;
    for (int i=0;i<n;++i )
    {
        cin>> a[i];
    }
}

int solve()
{
    int cnt=0;
    int Min=a[0];
    for(int i=0; i<n; ++i)
    {
        if (a[i]<Min)
            Min=a[i];
    }
    for(int i=0; i<n; ++i)
    {
        int b=a[i]-Min;
        cnt=cnt+b;
    }
    return cnt;
}

int main()
{
    freopen("trees.inp", "r", stdin);
    freopen("trees.out", "w", stdout);
    ReadData();
    cout <<solve();
    return 0;
}