func_code_string: #include <bits/stdc++.h>   using namespace std;   const int maxlongint = 2147483647;   const int inf = 1000000000;   int main() {     int a, b, c, d, e, f, ans = 0, k = -1, n1, n2;     cin >> a >> b >> c >> d >> e >> f;     ans = a * b + c * d + e * f;     for (n1 = 1; n1 <= 1000; n1++)       if (n1 * n1 == ans) {         k = n1;         break;       }     if (k == -1) {       cout << -1 << endl;       return 0;     }     if (b == k) swap(a, b);     if (d == k) swap(c, d);     if (f == k) swap(e, f);     if (a == k && c == k && e == k) {       cout << k << endl;       for (n1 = 1; n1 <= b; n1++) {         for (n2 = 1; n2 <= k; n2++) putchar( A );         printf(  n );       }       for (n1 = 1; n1 <= d; n1++) {         for (n2 = 1; n2 <= k; n2++) putchar( B );         printf(  n );       }       for (n1 = 1; n1 <= f; n1++) {         for (n2 = 1; n2 <= k; n2++) putchar( C );         printf(  n );       }       return 0;     }     int sd = 0;     if (c == k) {       sd = 1;       swap(a, c);       swap(b, d);     } else if (e == k) {       sd = 2;       swap(a, e);       swap(b, f);     }     if (a != k) {       cout << -1 << endl;       return 0;     }     if (d == k - b) swap(c, d);     if (f == k - b) swap(e, f);     if (c != k - b || e != k - b) {       cout << -1 << endl;       return 0;     }     {       cout << k << endl;       for (n1 = 1; n1 <= b; n1++) {         for (n2 = 1; n2 <= k; n2++) putchar( A  + sd);         printf(  n );       }       for (n1 = 1; n1 <= k - b; n1++) {         if (sd != 1)           for (n2 = 1; n2 <= d; n2++) putchar( B );         else           for (n2 = 1; n2 <= d; n2++) putchar( A );         if (sd != 2)           for (n2 = 1; n2 <= f; n2++) putchar( C );         else           for (n2 = 1; n2 <= f; n2++) putchar( A );         printf(  n );       }       return 0;     }   }   