func_code_string: #include <bits/stdc++.h>   using namespace std;   using ll = long long;   const int N = 1e5 + 5;   int n, a[N];   int main() {     scanf( %d , &n);     for (int i = 0; i < n; ++i) scanf( %d , a + i);     sort(a, a + n);     for (int i = 0, eq = 0; i < n - 1; ++i) {       if (a[i] == a[i + 1]) {         if ((++eq) > 1 || (i > 0 && a[i] - 1 == a[i - 1]) || a[i] == 0) {           puts( cslnb );           return 0;         }       }     }     ll sum = 0;     for (int i = 0; i < n; ++i) sum += a[i] - i;     if ((sum & 1) == 0)       puts( cslnb );     else       puts( sjfnb );     return 0;   }   