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 n, a, b;     cin >> n >> a >> b;     long long left = a;     long long right = n - b - 1;     long long end = max(left, right);     long long ans = n - end;     cout << ans;   }   