func_code_string: #include <bits/stdc++.h>   #pragma optimize( O3 )   using namespace std;   const int up = 1e5 + 5;   int la, ra, ta, lb, rb, tb;   int gcd(int x, int y) {     if (x == 0 || y == 0) {       return x + y;     }     int r = x % y;     while (r) {       x = y;       y = r;       r = x % y;     }     return y;   }   int main() {     ios_base::sync_with_stdio(false);     cin >> la >> ra >> ta;     cin >> lb >> rb >> tb;     if (lb < la) {       swap(la, lb);       swap(ra, rb);       swap(ta, tb);     }     int g = gcd(ta, tb);     int rem = (lb - la) % g;     int res = 0;     if (rem != 0) {       res = max(res, min(g - rem + ra - la, rb - lb) - (g - rem) + 1);       res = max(res, min(ra - la, rem + rb - lb) - rem + 1);     } else {       res = max(res, min(ra - la, rb - lb) + 1);     }     cout << res << endl;     return 0;   }   