t = int(input())
for _ in range(t):
s = input()
count = 0
for x in s:
if x == '?':
count+=1
elif x == '0':
count+=1
break
elif x == '1':
count = 1
print(count)
#include <bits/stdc++.h>
#define lli long long int
#define pb push_back
#define fi first
#define se second
#define vi vector<lli>
#define pi pair<int,int>
#define all(a) a.begin(),a.end()
#define mem(h,x) memset(h,x,sizeof(h))
#define intmx 1000000007
using namespace std;
void solve()
{
//CROSS CHECK CORNER CASES(N==1)
string a;
cin >> a;
int ans = 0, n = a.size(), l = 0, r = n - 1;
for (int i = 0; i < n; i++)
{
if (a[i] == '1')
l = i;
}
for (int i = n - 1; i >= 0; i--)
{
if (a[i] == '0')
r = i;
}
cout << r - l + 1 << '\n';
}
int main()
{
// auto start=chrono::high_resolution_clock::now();
ios_base::sync_with_stdio(false);
int t = 1;
#ifndef ONLINE_JUDGE
freopen("input.txt", "r", stdin);
freopen("output.txt", "w", stdout);
#endif
cin >> t;
while (t--)
solve();
// auto stop=chrono::high_resolution_clock::now();
// auto durn=chrono::duration_cast<chrono::microseconds>(stop-start);
// cerr<<"\n"<<durn.count()/1000.0<<" ms\n";
}
630I - Parking Lot | 160B - Unlucky Ticket |
371B - Fox Dividing Cheese | 584B - Kolya and Tanya |
137B - Permutation | 550C - Divisibility by Eight |
5A - Chat Servers Outgoing Traffic | 615A - Bulbs |
5B - Center Alignment | 549A - Face Detection |
535B - Tavas and SaDDas | 722C - Destroying Array |
366A - Dima and Guards | 716B - Complete the Word |
1461C - Random Events | 1627A - Not Shading |
141B - Hopscotch | 47B - Coins |
1466C - Canine poetry | 74A - Room Leader |
1333D - Challenges in school №41 | 1475B - New Year's Number |
461A - Appleman and Toastman | 320B - Ping-Pong (Easy Version) |
948A - Protect Sheep | 387A - George and Sleep |
53A - Autocomplete | 1729G - Cut Substrings |
805B - 3-palindrome | 805C - Find Amir |