Fergusonball Ratings

Interview

Time limit1sMemory limit1024 MB

Summary

For each player, compute 5 times points minus 3 times fouls, count how many exceed 40, and mark the team gold if all do.

Level: Easy2 of 10
Topics: Implementation, Math, Brute force
Solved: No attempts yet

Problem

Fergusonball players are given a star rating based on the number of points they score and the number of fouls they commit. Specifically, they are awarded 5 stars for each point scored, and 3 stars are taken away for each foul committed. For every player, the number of points scored is greater than the number of fouls committed.

Determine how many players on a team have a star rating greater than 40. Also determine whether the team is a gold team, which means every player has a star rating greater than 40.

Input

The first line of input contains a positive integer N, the total number of players on the team. This is followed by a pair of consecutive lines for each player. The first line in a pair is the number of points the player scored. The second line in a pair is the number of fouls the player committed. Both the number of points and the number of fouls are non-negative integers.

Output

Output the number of players whose star rating is greater than 40, immediately followed by a plus sign if the team is a gold team.

Examples2

Example 1
Input
```
3
12
4
10
3
9
1
```
Expected output
```
3+
```
Example 2
Input
```
2
8
0
12
1
```
Expected output
```
1
```