toate

#include <bits/stdc++.h>

using namespace std;
ifstream fin("toate.in");
ofstream fout("toate.out");
int n, x, xnou, xmax;

int main()
{
    fin>>n;
    for(int i=1; i<=n; ++i)
    {
        fin>>x;
        int p=1;
        xnou=0;
        while(x)
        {
            if(x%10!=9)
            {
                xnou=xnou+(x%10)*p;
                p*=10;
            }
            x/=10;
        }
        if(xnou>xmax)
            xmax=xnou;
    }
    fout<<xmax;
    return 0;
}
/**
SO
#include <fstream>

using namespace std;
ifstream f("toate.in");
ofstream g("toate.out");
int n,i,a,x,p,r,maxim;

int main()
{
    f >> n;
    maxim = 0;
    for(i = 1; i <= n; i++)
    {
        f >> x;
        a = 0;
        p = 1;
        while(x != 0)
        {
            r = x % 10;
            if(r != 9)
            {
                a = a + r * p;
                p = p * 10;
            }
            x = x / 10;
        }
        if(a > maxim)
            maxim = a;
    }
    g << maxim;
    return 0;
}
*/