## Problem

According to a recent survey, Biryani is the most ordered food. Chef wants to learn how to make world-class Biryani from a MasterChef. Chef will be required to attend the MasterChef's classes for  weeks, and the cost of classes per week is  coins. What is the total amount of money that Chef will have to pay?

### Input Format

• The first line of input will contain an integer  — the number of test cases. The description of  test cases follows.
• The first and only line of each test case contains two space-separated integers  and , as described in the problem statement.

### Output Format

For each test case, output on a new line the total amount of money that Chef will have to pay.

• 1≤�≤104
• 1≤�,�≤100

### Sample 1:

Input

Output

4
1 10
1 15
2 10
2 15
10
15
20
30


### Explanation:

Test case 1: Chef will be required to attend the MasterChef's classes for 1 week and the cost of classes per week is 10 coins. Hence, Chef will have to pay 10 coins in total.

Test case 2: Chef will be required to attend the MasterChef's classes for 1 week and the cost of classes per week is 15 coins. Hence, Chef will have to pay 15 coins in total.

Test case 3: Chef will be required to attend the MasterChef's classes for 2 weeks and the cost of classes per week is 10 coins. Hence, Chef will have to pay 20 coins in total.

Test case 4: Chef will be required to attend the MasterChef's classes for 2 weeks and the cost of classes per week is 15 coins. Hence, Chef will have to pay 30 coins in total.

## Code Examples

### #1 Code Example with C Programming

Code - C Programming

#include<stdio.h>
int main(void) {
int t,x,y;
scanf("%d",&t);
while(t--)
{
scanf("%d %d",&x,&y);
printf("%d\n",x*y);
}
return 0;
}
Copy The Code &

Input

cmd
4
1 10
1 15
2 10
2 15

Output

cmd
10
15
20
30

## Demonstration

CodeChef solotion BIRIYANI - Biryani classes CodeChef solotion in C,C++