func_code_string: #include <bits/stdc++.h>   using namespace std;   #pragma GCC optimize( O3 )   #pragma comment(linker,  /stack:200000000 )   #pragma GCC optimize( Ofast,unroll-loops,no-stack-protector,fast-math )   #pragma GCC target( sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native )   const long long mod = 1e9 + 7;   const long long N = 1e5 + 5;   void solve(void) {     long long a, flag = 0;     string b;     cin >> a >> b;     long long n = b.length();     for (long long i = 0; i < n; i++) {       if (b[i] !=  9 ) {         flag = 1;         break;       }     }     n -= flag;     cout << n * a <<   n ;   }   int main(void) {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     cout.tie(NULL);     cout << fixed << setprecision(10);     ;     long long ___ = 1;     cin >> ___;     while (___--) {       solve();     }     return 0;   }   