#include<bits/stdc++.h>
using namespace std;
 
const int N = 3, M = 3, L = 4;
int S[4] = {1,3,4,6};
int A[N+2][M+2] = { 
				{0,0,0,0,0},
				{0,1,2,3,0},
				{0,3,4,5,0},
				{0,5,6,7,0},
				{0,0,0,0,0}
				};
int V[N+2][M+2] = {0};
int dx[4] = {1,-1,0,0};
int dy[4] = {0,0,1,-1};
 
void DFS(int x, int y, int c){
	V[x][y] = 1;
 
	if(c == L-1){
		cout << "FOUND" << endl;
		return;
	}
	for(int i=0; i<4;i++){
		int nx = x+dx[i], ny = y+dy[i];
		if(!V[nx][ny] && A[nx][ny] == S[c+1]) DFS(nx,ny, c+1);
	}
}
 
 
int main() {
	for(int i=1; i<=N;i++){
		for(int j=1; j<=M;j++){
			if(!V[i][j] && A[i][j] == S[0]) DFS(i,j,0);
		}
	}
	return 0;
}

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