#include <bits/stdc++.h>

using i64 = long long;
using u64 = unsigned long long;
using u32 = unsigned;

using u128 = unsigned __int128;
using i128 = __int128;

int main() {
    std::ios::sync_with_stdio(false);
    std::cin.tie(nullptr);
    
    std::string a, b, c;
    std::cin >> a >> b >> c;
    
    const int n = a.size();
    
    i64 ans = 0;
    
    std::array<int, 2> dp {};
    
    for (int i = 0; i < n; i++) {
        const int x = (c[i] - '0') - (a[i] - '0') - (b[i] - '0');
        
        dp[0] += 1;
        
        std::array<int, 2> ndp {};
        for (int v = 0; v < 10; v++) {
            const int w = v * 10 + x;
            if (0 <= w && w < 2) {
                ndp[w] += dp[v];
            }
        }
        dp = ndp;
        ans += dp[0];
    }
    
    std::cout << ans << "\n";
    
    return 0;
}