func_code_string: #include <bits/stdc++.h>   using namespace std;   int A[2][2];   int main() {     int d, i, n;     cin >> n;     int k = n;     int cd = 0, ud = 0, c_i = 0, u_i = 0;     while (k--) {       cin >> i >> d;       if (i == 0)         c_i++;       else         u_i++;       if (d == 0)         cd++;       else         ud++;     }     cout << min(c_i, u_i) + min(cd, ud) << endl;     return 0;   }   