static int[][] map;

static int[] paper = { 0, 5, 5, 5, 5, 5 };

static int ans = Integer.MAX_VALUE;

public static void main(String[] args) throws Exception {

BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));

StringTokenizer st;

map = new int[10][10];

for (int i = 0; i < map.length; i++) {

st = new StringTokenizer(br.readLine());

for (int j = 0; j < map[i].length; j++) {

map[i][j] = Integer.parseInt(st.nextToken());

}

}

DFS(0, 0, 0);

if (ans == Integer.MAX_VALUE) {

ans = -1;

}

System.out.println(ans);

}

public static void DFS(int x, int y, int cnt) {

if (x >= 9 && y > 9) {

ans = Math.min(ans, cnt);

return;

}

if (ans <= cnt) {

return;

}

if (y > 9) {

DFS(x + 1, 0, cnt);

return;

}

if (map[x][y] == 1) {

for (int i = 5; i >= 1; i--) {

if (paper[i] > 0 && isAttach(x, y, i)) {

attach(x, y, i, 0);

paper[i]--;

DFS(x, y + 1, cnt + 1);

attach(x, y, i, 1);

paper[i]++;

}

}

} else {

DFS(x, y + 1, cnt);

}

}

public static void attach(int x, int y, int size, int state) {

for (int i = x; i < x + size; i++) {

for (int j = y; j < y + size; j++) {

map[i][j] = state;

}

}

}

public static boolean isAttach(int x, int y, int size) {

for (int i = x; i < x + size; i++) {

for (int j = y; j < y + size; j++) {

if (i < 0 || i >= 10 || j < 0 || j >= 10) {

return false;

}

if (map[i][j] != 1) {

return false;

}

}

}

return true;

}

}