A dockyard scanner records shipping containers as they roll past on the conveyor, one at a time. Each scan produces a container ID and the container's weight in kilograms. You must assemble these raw scans into a manifest table for the shipping log: a header row naming the two columns, followed by one row per scanned container, kept in the exact order the containers were scanned (do not sort or reorder them).

Input format

The first line contains a single integer n, the number of scanned containers. Each of the next n lines contains two integers container_id and weight_kg, separated by a space.

Output format

Print n + 1 lines. The first line is exactly the header container_id,weight_kg. Each following line corresponds to one scanned container, in the same order it appears in the input, formatted as <container_id>,<weight_kg> (no spaces, comma-separated). If n is 0, print only the header line.

Constraints

• 0 <= n <= 1000
• 1 <= container_id <= 1000000000
• 0 <= weight_kg <= 1000000
• Container IDs are not necessarily distinct, and must not be deduplicated or reordered.

3
101 25
102 30
103 22

container_id,weight_kg
101,25
102,30
103,22

0

container_id,weight_kg