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Kang the Penguin thinks that Farmer John's robot plow (Linky!) is a failure, since it can only plow a field that is 240 by 240 at best. Thus, he wishes to suan it with his speciality Penguin Plow (tm), which can plow a field that is at most 240 by 1,000,000,000 in dimensions. Help him with his task!

## Input and Output

Exactly the same as in the Robot Plow question (see above), except that the *Y* variable(s) may take values up to 1,000,000,000 and there may be up to 20,000 plow instructions.

## Grading

10% of all test cases will have limits similar to the robot plow (240 by 240).

## Sample Input 1

6 4 2 1 1 2 4 1 3 5 4

## Sample Output 1

14

## Explanation for Sample Output 1

Check the explanation in rplow.### Tags

### Subtasks and Limits

Subtask | Score | #TC | Time | Memory | Scoring |
---|---|---|---|---|---|

1 | 100 | 20 | 1s | 32MB | Average |

2 | 0 | 1 | 1s | 32MB | Average |

### Judge Compile Command

g++-7 ans.cpp -o pplow -Wall -static -O2 -lm -m64 -s -w -std=gnu++17 -fmax-errors=512