#include // {{{ #include #ifdef __cpp_lib_ranges_enumerate #include namespace rv = std::views; namespace rs = std::ranges; #endif // https://codeforces.com/blog/entry/96344 #pragma GCC optimize("O2,unroll-loops") #pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt") using namespace std; using i32 = int32_t; using u32 = uint32_t; using i64 = int64_t; using u64 = uint64_t; using f64 = double; using f128 = long double; #if __cplusplus >= 202002L template constexpr T MIN = std::numeric_limits::min(); template constexpr T MAX = std::numeric_limits::max(); template [[nodiscard]] static T sc(auto&& x) { return static_cast(x); } template [[nodiscard]] static T sz(auto&& x) { return static_cast(x.size()); } #endif static void NO() { std::cout << "NO\n"; } static void YES() { std::cout << "YES\n"; } template using vec = std::vector; #define all(x) (x).begin(), (x).end() #define rall(x) (x).rbegin(), (x).rend() #define ff first #define ss second #ifdef LOCAL #define db(...) std::print(__VA_ARGS__) #define dbln(...) std::println(__VA_ARGS__) #else #define db(...) #define dbln(...) #endif // }}} static constexpr size_t MOD = 1e9 + 7; void solve() { string s; cin >> s; u32 n = s.size(); vec pref10(n + 1, 0); for (u32 i = 1; i <= n; ++i) { pref10[i] = pref10[i - 1] + (s[i - 1] == '1' ? 1 : -1); } map cnt; cnt[0] = 1; u64 ans = 0; for (u32 y = 1; y <= n; ++y) { ans = (ans + cnt[pref10[y]] * (n - y + 1)) % MOD; cnt[pref10[y]] = (cnt[pref10[y]] + y + 1) % MOD; } println("{}", ans); } int main() { // {{{ std::cin.exceptions(std::cin.failbit); #ifdef LOCAL std::cerr.rdbuf(std::cout.rdbuf()); std::cout.setf(std::ios::unitbuf); std::cerr.setf(std::ios::unitbuf); #else std::cin.tie(nullptr)->sync_with_stdio(false); #endif u32 tc = 1; std::cin >> tc; for (u32 t = 0; t < tc; ++t) { solve(); } return 0; } // }}}