func_code_string: #include <bits/stdc++.h>   using namespace std;   signed main() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     cout.tie(NULL);     ;     long long int a, b, c, n;     cin >> a >> b >> c >> n;     if ((min(min(a, b), c) >= n) || (n - (a + b - c) < 1) || (min(a, b) < c))       return cout << -1, 0;     cout << n - (a + b - c);   }   