func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     {       long long i, j, n, a, b, c, d, mx, mn;       cin >> n >> a >> b >> c >> d;       mx = max(a + b, a + c);       mx = max(mx, b + d);       mx = max(mx, c + d);       mn = min(a + b, a + c);       mn = min(mn, b + d);       mn = min(mn, c + d);       if (mx + 1 <= mn + n) {         i = min(a + b + n, mn + n);         j = max(mx + 1, a + b + 1);         cout << n * (i - j + 1);       } else         cout <<  0 ;     }     return 0;   }   