#include <iostream>

using namespace std;

int main() {
    int n, j, count, fita[10100], fitaV[10100];
    cin>>n;
    for(int i = 0; i < n; i++) {
        cin>>fita[i];
        fitaV[i] = fita[i];
    }

    for(int i = 0; i < n; i++) {
        if(fita[i] == 0) {
            // Ida
            j = i + 1;
            count = 1;
            while(fita[j] != 0 && j < n) {
                if(fita[j] == -1)
                    fita[j] = count;
                j++;
                count++;
            }

            // Volta
            j = i - 1;
            count = 1;
            while(fitaV[j] != 0 && j >= 0) {
                if(fitaV[j] == -1)
                    fitaV[j] = count;
                j--;
                count++;
            }
        }
    }

    for(int i = 0; i < n; i++) {
        if(fita[i] == -1) cout<<fitaV[i]<<" ";
        else if(fitaV[i] == -1) cout<<fita[i]<<" ";
        else if(fitaV[i] == 0 && fita[i] == 0) cout<<"0 ";
        else if(fita[i] < fitaV[i]) cout<<fita[i]<<" ";
        else if(fitaV[i] < fita[i]) cout<<fitaV[i]<<" ";
        else if(fitaV[i] == fita[i]) cout<<fita[i]<<" ";
    }
    return 0;
}