#include <bits/stdc++.h>

using namespace std;

int mod = 1e9+7;

typedef pair<int,int> pi;

vector<vector<char>> mat;

vector<pi> dir = {{0, 1}, {0, -1}, {1, 0}, {-1,0}, {-1, -1}, {1, 1}, {1, -1}, {-1, 1}};

int calMax(int qx, int qy){

// cout<<qx<<" "<<qy<<endl;

queue<array<int,4>> q;

for(auto &d: dir){

int dx = d.first;

int dy = d.second;

q.push({qx, qy, dx, dy});

}

int ans = 0;

while(q.size()){

array<int,4> ff = q.front(); q.pop();

int x = ff[0], y = ff[1];

if(x < 0 || x >= 8 || y < 0 || y >= 8) continue;

if(mat[x][y] == 'E'){

mat[x][y] = 'O';

ans = max(ans, 1+calMax(x, y));

mat[x][y] = 'E';

}

ff[0] += ff[2];

ff[1] += ff[3];

q.push(ff);

}

return ans;

}

int main() {

int qx, qy;

mat.resize(8, vector<char> (8));

for(int i=0; i<8; i++){

for(int j=0; j<8; j++){

char c; cin>>c;

mat[i][j] = c;

if(c == 'Q'){

qx = i, qy = j;

}

}

}

int ans = calMax(qx, qy);

cout<<ans<<endl;

return 0;

}