func_code_string: #include <bits/stdc++.h>   using namespace std;   int fu(vector<int> v) {     int i;     for (i = 0; i < 10; i++) {       if (v[i] == 0) return i;     }     return i;   }   int ru(vector<int> v) {     int i;     for (i = 9; i >= 0; i--) {       if (v[i] == 0) return i;     }     return i;   }   int main() {     int n, k, i, ch = 0, ch1 = 9;     cin >> n;     string a;     cin >> a;     int a1 = 0, ch2 = 0;     vector<int> ans(10, 0);     for (i = 0; i < n; i++) {       if (a[i] ==  L ) {         ans[ch] = 1;         ch = fu(ans);       } else if (a[i] ==  R ) {         ans[ch1] = 1;         ch1 = ru(ans);       } else if (isdigit((int)a[i])) {         int ch2 = (int)a[i] - 48;         ans[ch2] = 0;         ch = fu(ans);         ch1 = ru(ans);       }     }     for (i = 0; i < 10; i++) cout << ans[i];   }   