Total Prize Money : PRIZEPOOL | CodeChef Solution Week 1

Problem

In a coding contest, there are prizes for the top rankers. The prize scheme is as follows:

• Top $10$ participants receive rupees $X$ each.
• Participants with rank $11$ to $100$ (both inclusive) receive rupees $Y$ each.

Find the total prize money over all the contestants.

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Input Format

• First line will contain $T$, number of test cases. Then the test cases follow.
• Each test case contains of a single line of input, two integers $X$ and $Y$ - the prize for top $10$ rankers and the prize for ranks $11$ to $100$ respectively.

Output Format

For each test case, output the total prize money over all the contestants.

Constraints

• $1 \leq T \leq 1000$
• $1 \leq Y \leq X \leq 1000$

Sample 1:

Input

Output

 4
1000 100
1000 1000
80 1
400 30

19000
100000
890
6700

Explanation:

Test Case $1$: Top $10$ participants receive rupees $1000$ and next $90$ participants receive rupees $100$ each. So, total prize money $= 10 \cdot 1000 + 90 \cdot 100 = 19000$.

Test Case $2$: Top $10$ participants receive rupees $1000$ and next $90$ participants receive rupees $1000$ each. So, total prize money $= 10 \cdot 1000 + 90 \cdot 1000 = 100000$.

Test Case $3$: Top $10$ participants receive rupees $80$ and next $90$ participants receive rupee $1$ each. So, total prize money $= 10 \cdot 80 + 90 \cdot 1 = 890$.

Test Case $4$: Top $10$ participants receive rupees $400$ and next $90$ participants receive rupees $30$ each. So, total prize money $= 10 \cdot 400 + 90 \cdot 30 = 6700$.

Solution

#include <iostream>
using namespace std;

// Solution from : Code Radius [ https://radiuscode.blogspot.com/ ]

int main() {
	int txP;
	cin>>txP;
	for(int index=0;index<txP;index++)
	{
	    int xx,yx;
	    cin>>xx>>yx;
	    cout<<10*xx+90*yx<<endl;
	}
	return 0;

}

Please First Try to Solve Problem by Yourself.