func_code_string: #include <bits/stdc++.h>   using namespace std;   int dat[2][2][2][2][2][2][2][2][2][2][2][2][2][2][2][2][2][2];   int main() {     int t, i;     scanf( %d , &t);     long long var;     char str[20];     char ch =  + ;     int arr[18];     while (t--) {       cin >> ch;       for (i = 0; i <= 17; i++) {         arr[i] = 0;       }       if (ch ==  + ) {         scanf( %I64d , &var);         i = 0;         while (var != 0) {           arr[i] = (var % 10) % 2;           var /= 10;           i++;         }         dat[arr[0]][arr[1]][arr[2]][arr[3]][arr[4]][arr[5]][arr[6]][arr[7]]            [arr[8]][arr[9]][arr[10]][arr[11]][arr[12]][arr[13]][arr[14]][arr[15]]            [arr[16]][arr[17]]++;       } else if (ch ==  - ) {         scanf( %I64d , &var);         i = 0;         while (var != 0) {           arr[i] = (var % 10) % 2;           var /= 10;           i++;         }         dat[arr[0]][arr[1]][arr[2]][arr[3]][arr[4]][arr[5]][arr[6]][arr[7]]            [arr[8]][arr[9]][arr[10]][arr[11]][arr[12]][arr[13]][arr[14]][arr[15]]            [arr[16]][arr[17]]--;       } else {         scanf( %s , &str);         i = 0;         while (str[i] !=   0 ) {           i++;         }         int j = 0;         while (j < i) {           arr[j] = str[i - j - 1] -  0 ;           j++;         }         printf( %d  , dat[arr[0]][arr[1]][arr[2]][arr[3]][arr[4]][arr[5]][arr[6]]                          [arr[7]][arr[8]][arr[9]][arr[10]][arr[11]][arr[12]]                          [arr[13]][arr[14]][arr[15]][arr[16]][arr[17]]);         printf(  n );       }     }   }   