text: #include <assert.h>
  #include <ctype.h>
  #include <limits.h>
  #include <math.h>
  #include <stdbool.h>
  #include <stddef.h>
  #include <stdint.h>
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  
  char* readline();
  char* ltrim(char*);
  char* rtrim(char*);
  char** split_string(char*);
  
  int parse_int(char*);
  
  /*
   * Complete the 'taumBday' function below.
   *
   * The function is expected to return a LONG_INTEGER.
   * The function accepts following parameters:
   *  1. INTEGER b
   *  2. INTEGER w
   *  3. INTEGER bc
   *  4. INTEGER wc
   *  5. INTEGER z
   */
  
  long taumBday(int b, int w, int bc, int wc, int z) {
      long cost = 0;
      long lb = b;
      long lw = w;
      if ((lb * bc) > (lb * (wc + z))) {
          cost = lb * (wc + z) + lw * wc;
      } else if ((lw * wc) > (lw * (bc + z))) {
          cost = lb * bc + lw * (bc + z);
      } else {
          cost = lb * bc + lw * wc;
      }
      return cost;
  }
  
  int main()
  {
      FILE* fptr = fopen(getenv("OUTPUT_PATH"), "w");
  
      int t = parse_int(ltrim(rtrim(readline())));
  
      for (int t_itr = 0; t_itr < t; t_itr++) {
          char** first_multiple_input = split_string(rtrim(readline()));
  
          int b = parse_int(*(first_multiple_input + 0));
  
          int w = parse_int(*(first_multiple_input + 1));
  
          char** second_multiple_input = split_string(rtrim(readline()));
  
          int bc = parse_int(*(second_multiple_input + 0));
  
          int wc = parse_int(*(second_multiple_input + 1));
  
          int z = parse_int(*(second_multiple_input + 2));
  
          long result = taumBday(b, w, bc, wc, z);
  
          fprintf(fptr, "%ld\n", result);
      }
  
      fclose(fptr);
  
      return 0;
  }
  
  char* readline() {
      size_t alloc_length = 1024;
      size_t data_length = 0;
  
      char* data = malloc(alloc_length);
  
      while (true) {
          char* cursor = data + data_length;
          char* line = fgets(cursor, alloc_length - data_length, stdin);
  
          if (!line) {
              break;
          }
  
          data_length += strlen(cursor);
  
          if (data_length < alloc_length - 1 || data[data_length - 1] == '\n') {
              break;
          }
  
          alloc_length <<= 1;
  
          data = realloc(data, alloc_length);
  
          if (!data) {
              data = '\0';
  
              break;
          }
      }
  
      if (data[data_length - 1] == '\n') {
          data[data_length - 1] = '\0';
  
          data = realloc(data, data_length);
  
          if (!data) {
              data = '\0';
          }
      } else {
          data = realloc(data, data_length + 1);
  
          if (!data) {
              data = '\0';
          } else {
              data[data_length] = '\0';
          }
      }
  
      return data;
  }
  
  char* ltrim(char* str) {
      if (!str) {
          return '\0';
      }
  
      if (!*str) {
          return str;
      }
  
      while (*str != '\0' && isspace(*str)) {
          str++;
      }
  
      return str;
  }
  
  char* rtrim(char* str) {
      if (!str) {
          return '\0';
      }
  
      if (!*str) {
          return str;
      }
  
      char* end = str + strlen(str) - 1;
  
      while (end >= str && isspace(*end)) {
          end--;
      }
  
      *(end + 1) = '\0';
  
      return str;
  }
  
  char** split_string(char* str) {
      char** splits = NULL;
      char* token = strtok(str, " ");
  
      int spaces = 0;
  
      while (token) {
          splits = realloc(splits, sizeof(char*) * ++spaces);
  
          if (!splits) {
              return splits;
          }
  
          splits[spaces - 1] = token;
  
          token = strtok(NULL, " ");
      }
  
      return splits;
  }
  
  int parse_int(char* str) {
      char* endptr;
      int value = strtol(str, &endptr, 10);
  
      if (endptr == str || *endptr != '\0') {
          exit(EXIT_FAILURE);
      }
  
      return value;
  }
  
  