Removing Digits

#include <iostream>
using namespace std;

int v[1000001];

int se_gaseste(int a,int cif){
    while(a>0 && a%10!=cif)
        a/=10;
    if(a>0)
        return 1;
    else
        return 0;
}

int main()
{
    int n,i,j,stop;
    cin>>n;
    v[n]=0;
    for(i=n-1;i>=0;i--)
        v[i]=-1;
    for(i=n-1;i>=0;i--){
        stop=min(9,n-i);
        for(j=1;j<=stop;j++){
            if(v[i+j]>-1 && se_gaseste(i+j,j)==1){
                if(v[i]==-1){
                    v[i]=v[i+j]+1;
                }else{
                    v[i]=min(v[i+j]+1,v[i]);
                }
            }
        }
        ///printf("i:%d v[i]:%d\n",i,v[i]);
    }
    cout<<v[0];
    return 0;
}