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문제

Every year, Paris welcomes dozens of millions of tourists, who bring a considerable revenue to the city and its tourist industry. As an employee of the tourism bureau of the city of Paris, you are tasked with computing how much money was spent by tourists on a particular week. You are given credit card receipts for that week and asked to tally them. As money is important, you want to obtain the exact number, to the cent.

입력

The input consists of n lines, all of which contain a decimal number representing the expense e in euros. All decimal numbers are formatted as a non-empty sequence of decimal digits, a point (.) used as decimal separator, and two decimal digits for the fraction in cents.

출력

The output should consist of a single line, whose content is the total expenses, a decimal number in the same format as the input.

제한

  • 1 ≤ n ≤ 1 000 000
  • 0.00 ≤ e ≤ 1 000 000.00

예제 입력 1

1432.23
216.09
1475.09
1327.20
2457.18

예제 출력 1

6907.79