#include <bits/stdc++.h>
#define test(x) cout<<#x<<" = "<<x<<endl
#define endl '\n'
#define ll long long
#define lll __int128
#define int long long
using namespace std;
const int MAXN = 1e5 + 100, N = 1e9;
int n, m;
string s;

int a[3] = {4, 9, 25}, res[3];
vector<int> tmp;

ll max_factor;

inline ll fpow(ll x,ll y,ll mod)
{
    ll ans=1;
    while(y)
    {
        if(y&1) ans=((lll)ans*x)%mod;
        x=((lll)x*x)%mod;y>>=1;
    }
    return ans;
}

inline ll gcd(ll a,ll b)
{
    return b ? gcd(b,a%b) : a;
}

inline bool miller_rabin(ll x)
{
    if(x==2) return 1;
    if(x==46856248255981l||x==1||(x&1)==0) return 0;
    ll u=x-1,ct=0;
    while((u&1)==0) u/=2,ct++;
    for(int i=1;i<11;i++)
    {
        ll a=rand()%(x-1)+1;
        ll xt=fpow(a,u,x);
        if(xt==1) continue;
        for(int j=1;j<=ct;j++)
        {
            ll y=(lll)xt*xt%x;
            if(y==1&&xt!=1&&xt!=x-1) return 0;
            xt=y;
        }
        if(xt!=1) return 0;
    }
    return 1;
}

inline ll pollard(ll x)
{
    ll s=0,t=0,c=rand()%(x-1)+1,val=1;
    int stp=0,goal=1;
    for(goal=1;;goal<<=1,s=t,val=1)
    {
        for(stp=1;stp<=goal;++stp)
        {
            t=((lll)t*t+c)%x;
            val=(lll)val*abs(t-s)%x;
            if(stp%127==0)
            {
                ll d=gcd(val,x);
                if(d>1) return d;
            }
        }
        ll d=gcd(val,x);
        if(d>1) return d;
    }
}

void fac(ll x)
{
    if(x==1) return;
    ll p=x;
    if(miller_rabin(x))
    {
        tmp.push_back(x);
        return;
    }
    while(p>=x) p=pollard(x);
    int cnt=0;
    while(x%p==0) x/=p,++cnt;
    fac(x);fac(p);
}

bool chk(int k) {
	tmp.clear();
    fac(k);
    for(auto x:tmp)
        if(k%(x*x)==0) return 0;
    return 1;
}

// bool chk(int k) {
// 	for (int i = 2; i * i <= k; ++i) {
// 		int cnt = 0;
// 		while (k % i == 0)
// 			k /= i, ++cnt;
// 		if (cnt > 1)
// 			return 0;
// 	}
// 	return 1;
// }

void solve() {
	n = 200, m = 44100;
	{
		string s0;
		for (int i = 1; i <= 10; ++i) {
			cin >> s0;
			s += s0;
		}
	}
	int vis[50] = {0};
	for (int i = 0; i < 3; ++i)
		for (int st = 0; st < a[i]; ++st) {
			int ok = 1;
			for (int j = st; j < n; j += a[i])
				if (s[j] == '1') {
					ok = 0;
					break;
				}
			if (ok) {
				if (res[i] > 0) {
					cout << "-1";
					return;
				}
				res[i] = st;
			}
		}
	for (int st = 0; st < 49; ++st) {
		int ok = 1;
		for (int j = st; j < n; j += 49)
			if (s[j] == '1') {
				ok = 0;
				break;
			}
		if (ok) {
			vis[(49 - st) % 49] = 1;
		}
	}
	vector<int> ast, ans;
	for (int st = 1; st <= m; ++st) {
		int ok = 1;
		for (int i = 0; i < 3; ++i)
			if ((st + res[i]) % a[i] != 0)
				ok = 0;
		if (vis[st % 49] == 0)
			ok = 0;
		if (ok)
			ast.push_back(st);
	}
	for (int st : ast)
		for (int i = st; i <= 1e9; i += m) {
			int ok = 1;
			for (int t = 0; t < n; ++t) {
				if (chk(t + i) != s[t] - '0')
					ok = 0;
			}
			if (ok) {
				ans.push_back(i);
				break;
			}
		}
	if (ans.size() == 0)
		cout << "-1";
	else {
		sort(ans.begin(), ans.end());
		cout << ans[0];
	}
}

signed main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	int tt = 1;
//	cin >> tt;
	while (tt--)
		solve();
}

/*

11101110011011101010
11100100111011101110
11100110001010101110
11001110111011001110
01101110101011101000
11101110111011100110
01100010111011001110
11101100101001101110
10101110010011001110
11101110011011101010

01010101010101010101
10101010101010101010
01010101010101010101
10101010101010101010
01010101010101010101
10101010101010101010
01010101010101010101
10101010101010101010
01010101010101010101
10101010101010101010

*/