func_code_string: #include <bits/stdc++.h>   using namespace std;   double PI = acos(-1.0);   long long mod = 998244353;   struct custom_hash {     static uint64_t splitmix64(uint64_t x) {       x += 0x9e3779b97f4a7c15;       x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9;       x = (x ^ (x >> 27)) * 0x94d049bb133111eb;       return x ^ (x >> 31);     }     size_t operator()(uint64_t x) const {       static const uint64_t FIXED_RANDOM =           chrono::steady_clock::now().time_since_epoch().count();       return splitmix64(x + FIXED_RANDOM);     }   };   long long GCD(long long a, long long b) {     if (b == 0) return a;     return GCD(b, a % b);   }   long long prod(long long a, long long b) {     long long res = 0;     a %= mod;     while (b) {       if (b & 1ll) res = (res + a) % mod;       a = (2ll * a) % mod;       b >>= 1ll;     }     return res;   }   long long power(long long a, long long b) {     long long res = 1ll;     while (b > 0) {       if (b % 2ll) res = (res * a) % mod;       a = (a * a) % mod;       b /= 2ll;     }     return res;   }   long long binaryExponentiation(long long a, long long b) {     long long result = 1ll;     while (b > 0) {       if (b % 2 == 1) result = (result * a) % mod;       a = (a * a) % mod;       b /= 2ll;     }     return result;   }   long long ModularInverse(long long a) {     return binaryExponentiation(a, mod - 2);   }   long long n, m;   void solve() {     cin >> n;     vector<long long> a(n);     for (long long i = 0; i < n; i++) {       cin >> a[i];     }     for (long long i = 0; i < n; i++) {       if (a[i] >= 0) {         a[i] = -a[i] - 1;       }     }     long long x = INT_MAX, p = 0;     for (long long i = 0; i < n; i++) {       if (a[i] < x) {         x = a[i];         p = i;       }     }     if (n % 2) {       a[p] = -a[p] - 1;     }     for (auto &e : a) {       cout << e <<    ;     }     cout <<   n ;   }   signed main() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     long long t = 1;     while (t--) {       solve();     }   }   