func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n;     cin >> n;     while (n--) {       int a, b;       cin >> a >> b;       int sum = 0;       int h;       for (int i = 1; i < a; i++) {         sum += i;         if (sum >= b) {           sum -= i;           h = i - 1;           break;         }       }       int s = a - h - 1;       int sb = a - (b - sum) + 1;       for (int i = 1; i <= a; i++) {         if (i == s || i == sb)           cout <<  b ;         else           cout <<  a ;       }       cout << endl;     }     return 0;   }   