func_code_string: #include <bits/stdc++.h>   const long long mod = (long long)1e9 + 7;   using namespace std;   int main() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     cout.tie(NULL);     long long n, m;     cin >> n >> m;     vector<long long> v(m);     bool valid = true;     for (long long i = 0; i < m; i++) {       cin >> v[i];       if (v[i] == n or v[i] == 1) valid = 0;     }     if (!valid) {       cout <<  NO             <<   n ;       return 0;     }     sort(v.begin(), v.end());     for (long long i = 2; i < m; i++) {       if (v[i] - 1 == v[i - 1] and v[i] - 2 == v[i - 2]) {         valid = 0;         break;       }     }     if (valid)       cout <<  YES             <<   n ;     else       cout <<  NO             <<   n ;     return 0;   }   