func_code_string: #include <bits/stdc++.h>   using namespace std;   const int inf = 1e9;   const int N = 142123;   int n, a, b, c, d, s, ce;   long long ans;   int main() {     ios_base::sync_with_stdio(0);     cin.tie(0);     cin >> n >> a >> b >> ce >> d;     for (int i = 1; i <= n; ++i) {       s = a + b + i;       c = s - a - ce;       if (c < 1 || n < c) continue;       c = s - b - d;       if (c < 1 || n < c) continue;       c = s - ce - d;       if (c < 1 || n < c) continue;       ans += n;     }     cout << ans;   }   