#include<bits/stdc++.h>
using namespace std;
int n,k;
char a[21][21];
int fx[4]={0,1,0,-1};
int fy[4]={1,0,-1,0};
int b[101][3];
void dfs(int x,int y){
	a[x][y]=1;
	if(x==n&&y==n){
		for(int i=1;i<=k;i++){
			if(i==k)cout<<b[i][1]<<","<<b[i][2];
			else cout<<b[i][1]<<","<<b[i][2]<<"->";
		}
	}
	for(int i=0;i<=3;i++){
		int tx=x+fx[i];
		int ty=y+fy[i];
		if(tx>=1&&tx<=n&&ty>=1&&ty<=n&&a[tx][ty]=='0'){
			k++;
			b[k][1]=tx;
			b[k][2]=ty;
			dfs(tx,ty);
		}
	}
}
int main(){
    cin>>n;
    for(int i=1;i<=n;i++){
    	for(int j=1;j<=n;j++){
    		cin>>a[i][j];
    	}
    }
    dfs(1,1);
	return 0;
}

/**************************************************************
	Problem: 1431
	User: chenjingqi
	Language: C++
	Result: Wrong Answer
****************************************************************/