## Buy Masks solution codechef

Table of Contents

# SOLUTION

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You go to a shop to buy masks in this pandemic.

Now, there are 3 different types of packets of mask

- A packet of 10 masks
- A packet of 5 masks
- A packet of 1 mask

You are given the costs of each packet. A packet of **10** masks costs Rs. XX, a packet of **5 masks** costs Rs. YY and a packet of **1 mask** costs Rs. ZZ.

You need to find the minimum sum of rupees you need to pay to buy a total of exactly NN masks from the shop.

NOTE: You can buy any number of each type of packet (can be 0).

### Input: Buy Masks solution codechef

- First line will contain TT, number of testcases. Then the testcases follow.
- Each testcase contains of a single line of input, four integers N,X,Y,ZN,X,Y,Z.

### Output: Buy Masks solution codechef

For each testcase, output in a single line minimum Rupees you need to pay to buy NN masks.

### Constraints Buy Masks solution codechef

- 1≤T≤1051≤T≤105
- 1≤N,X,Y,Z≤1061≤N,X,Y,Z≤106

### Sample Input: Buy Masks solution codechef

```
2
17 10 10 3
19 30 10 1
```

### Sample Output:

```
26
19
```

### EXPLANATION:

**Test case 1**: He will buy **1 packet of 10 masks** (cost = Rs 1010), **1 packet of 5 masks** (cost = Rs. 1010) and **2 packets of 1 mask** (cost = Rs. 66).

Total cost = 10 + 10 + 6 = Rs. 26

# SOLUTION

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