func_code_string: #include <bits/stdc++.h>   int main() {     long long int l1, r1, l2, r2, k, l, r, t;     scanf( %lld%lld%lld%lld%lld , &l1, &r1, &l2, &r2, &k);     if (l1 > l2)       l = l1;     else       l = l2;     if (r1 > r2)       r = r2;     else       r = r1;     if ((k >= l) && (k <= r))       t = r - l;     else       t = r - l + 1;     if (t < 0)       t = 0;     else       t = t;     printf( %lld , t);     return 0;   }   