func_code_string: #include <bits/stdc++.h>   using namespace std;   long long a, b, c, d, n;   int main() {     while (~scanf( %I64d%I64d%I64d%I64d%I64d , &n, &a, &b, &c, &d)) {       long long mi = min(b - c, min(a - d, a + b - c - d)),                 ma = max(b - c, max(a - d, a + b - c - d));       long long num1 = min(n - ma, n), num2 = max(1 - mi, (long long)1), ans = 0;       ;       if (num1 < num2)         ans = 0;       else         ans = num1 - num2 + 1;       printf( %I64d n , n * ans);     }     return 0;   }   