func_code_string: #include <bits/stdc++.h>   using namespace std;   const long long INF(0x3f3f3f3f3f3f3f3fll);   const long long inf(0x3f3f3f3f);   template <typename T>   void read(T &res) {     bool flag = false;     char ch;     while (!isdigit(ch = getchar())) (ch ==  - ) && (flag = true);     for (res = ch - 48; isdigit(ch = getchar());          res = (res << 1) + (res << 3) + ch - 48)       ;     flag && (res = -res);   }   template <typename T>   void Out(T x) {     if (x < 0) putchar( - ), x = -x;     if (x > 9) Out(x / 10);     putchar(x % 10 +  0 );   }   long long gcd(long long a, long long b) { return b ? gcd(b, a % b) : a; }   long long lcm(long long a, long long b) { return a * b / gcd(a, b); }   long long pow_mod(long long x, long long n, long long mod) {     long long res = 1;     while (n) {       if (n & 1) res = res * x % mod;       x = x * x % mod;       n >>= 1;     }     return res;   }   long long fact_pow(long long n, long long p) {     long long res = 0;     while (n) {       n /= p;       res += n;     }     return res;   }   long long mult(long long a, long long b, long long p) {     a %= p;     b %= p;     long long r = 0, v = a;     while (b) {       if (b & 1) {         r += v;         if (r > p) r -= p;       }       v <<= 1;       if (v > p) v -= p;       b >>= 1;     }     return r;   }   long long quick_pow(long long a, long long b, long long p) {     long long r = 1, v = a % p;     while (b) {       if (b & 1) r = mult(r, v, p);       v = mult(v, v, p);       b >>= 1;     }     return r;   }   bool CH(long long a, long long n, long long x, long long t) {     long long r = quick_pow(a, x, n);     long long z = r;     for (long long i = 1; i <= t; i++) {       r = mult(r, r, n);       if (r == 1 && z != 1 && z != n - 1) return true;       z = r;     }     return r != 1;   }   bool Miller_Rabin(long long n) {     if (n < 2) return false;     if (n == 2) return true;     if (!(n & 1)) return false;     long long x = n - 1, t = 0;     while (!(x & 1)) {       x >>= 1;       t++;     }     srand(time(NULL));     long long o = 8;     for (long long i = 0; i < o; i++) {       long long a = rand() % (n - 1) + 1;       if (CH(a, n, x, t)) return false;     }     return true;   }   void exgcd(long long a, long long b, long long &x, long long &y) {     if (!b) {       x = 1, y = 0;       return;     }     exgcd(b, a % b, x, y);     long long t = x;     x = y, y = t - (a / b) * y;   }   long long inv(long long a, long long b) {     long long x, y;     return exgcd(a, b, x, y), (x % b + b) % b;   }   long long crt(long long x, long long p, long long mod) {     return inv(p / mod, mod) * (p / mod) * x;   }   long long fac(long long x, long long a, long long b) {     if (!x) return 1;     long long ans = 1;     for (long long i = 1; i <= b; i++)       if (i % a) ans *= i, ans %= b;     ans = pow_mod(ans, x / b, b);     for (long long i = 1; i <= x % b; i++)       if (i % a) ans *= i, ans %= b;     return ans * fac(x / a, a, b) % b;   }   long long C(long long n, long long m, long long a, long long b) {     long long N = fac(n, a, b), M = fac(m, a, b), Z = fac(n - m, a, b), sum = 0,               i;     for (i = n; i; i = i / a) sum += i / a;     for (i = m; i; i = i / a) sum -= i / a;     for (i = n - m; i; i = i / a) sum -= i / a;     return N * pow_mod(a, sum, b) % b * inv(M, b) % b * inv(Z, b) % b;   }   long long exlucas(long long n, long long m, long long p) {     long long t = p, ans = 0, i;     for (i = 2; i * i <= p; i++) {       long long k = 1;       while (t % i == 0) {         k *= i, t /= i;       }       ans += crt(C(n, m, i, k), p, k), ans %= p;     }     if (t > 1) ans += crt(C(n, m, t, t), p, t), ans %= p;     return ans % p;   }   const long long N = 3e5 + 10;   signed main() {     std::ios::sync_with_stdio(false);     long long t;     cin >> t;     while (t--) {       long long n;       cin >> n;       cout << n <<   n ;     }     return 0;   }   