func_code_string: #include <bits/stdc++.h>   using namespace std;   const int MAXN = (int)((1e5) + 100);   int gcd(int a, int b) {     if (a == 0) return b;     return gcd(b % a, a);   }   int max(int a, int b) {     if (a > b)       return a;     else       return b;   }   int min(int a, int b) {     if (a < b)       return a;     else       return b;   }   void pr(int x) { cout << x; }   void prl(int x) { cout << x <<   n ; }   template <class T>   bool ckmin(T& a, const T& b) {     return b < a ? a = b, 1 : 0;   }   template <class T>   bool ckmax(T& a, const T& b) {     return a < b ? a = b, 1 : 0;   }   const int N = 200 * 1000 + 11;   void solve() {     int q;     cin >> q;     std::vector<int> v(N);     int left = 0, right = 0;     for (int i = 0; i < q; ++i) {       string x;       cin >> x;       int id;       cin >> id;       if (i == 0) {         v[id] = left;         left--;         right++;       } else {         if (x ==  L ) {           v[id] = left;           left--;         } else if (x ==  R ) {           v[id] = right;           right++;         } else {           cout << min(abs(v[id] - left), abs(v[id] - right)) - 1 <<   n ;         }       }     }   }   signed main() {     ios_base::sync_with_stdio(false), cin.tie(NULL), cout.tie(NULL);     solve();   }   