#include <bits/stdc++.h>
using namespace std;
#define pb push_back
void build(vector<vector<int>> _b);
int construct(vector<vector<int>> p) {
int n = p.size();
vector<vector<int>> answer;
for (int i = 0; i < n; i++) {
vector<int> row;
for(int j=0;j<n;j++)row.pb(0);
if(i)row[i-1]=1;
if(i!=n-1)row[i+1]=1;
answer.push_back(row);
}
build(answer);
return 1;
}
/*
int n;
vector<vector<int>> p;
vector<vector<int>> b;
bool called = false;
static void check(bool cond, string message) {
if (!cond) {
printf("%s\n", message.c_str());
fclose(stdout);
exit(0);
}
}
void build(vector<vector<int>> _b) {
check(!called, "build is called more than once");
called = true;
check((int)_b.size() == n, "Invalid number of rows in b");
for (int i = 0; i < n; i++) {
check((int)_b[i].size() == n, "Invalid number of columns in b");
}
b = _b;
}
int main() {
assert(scanf("%d", &n) == 1);
p.resize(n);
for (int i = 0; i < n; i++) {
p[i].resize(n);
}
for (int i = 0; i < n; i++) {
for (int j = 0; j < n; j++) {
assert(scanf("%d", &p[i][j]) == 1);
}
}
fclose(stdin);
int possible = construct(p);
check(possible == 0 || possible == 1, "Invalid return value of construct");
if (possible == 1) {
check(called, "construct returned 1 without calling build");
} else {
check(!called, "construct called build but returned 0");
}
printf("%d\n", possible);
if (possible == 1) {
for (int i = 0; i < n; i++) {
for (int j = 0; j < n; j++) {
if (j) {
printf(" ");
}
printf("%d", b[i][j]);
}
printf("\n");
}
}
fclose(stdout);
}*/
