#include <iostream>
#include <cmath>
#include <algorithm>
#include <cstdio>
#include <cstring>
#include <string>
#include <cstdlib>
#include <vector>
#include <iomanip>
#include <functional>
using namespace std;
int main() {
int n, m;
cin >> n >> m;
int a[n][m];
int b[n][m];
for (int i = 0; i < n; i++) {
for (int j = 0; j < m; j++) {
cin >> a[i][j];
}
}
for (int i = 0; i < n; i++) {
for (int j = 0; j < m; j++) {
a[i][j] >= 0 ? b[i][j] = a[i][j] : b[i][j] = 1;
}
}
cout << endl;
for (int i = 0; i < n; i++) {
for (int j = 0; j < m; j++) {
j < n - 1 ? cout << b[i][j] << ' ' : cout << b[i][j] << endl;
}
}
return 0;
}
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