Pairs of Songs With Total Durations Divisible by 60

Try to solve the Pairs of Songs With Total Durations Divisible by 60 problem.

Statement

You are given a list of songs, where the duration of each song is represented by an integer array time, where time[i] indicates the length of the ithi^{th} song in seconds.

Your task is to find and return the number of pairs of songs (i, j) such that:

  • i < j (i.e., the pair should consist of two distinct songs)

  • The sum of their durations is divisible by 60, i.e., (time[i] + time[j]) % 60 == 0.

Constraints:

  • 11 \leq time.length 1000\leq 1000

  • 11 \leq time[i] 500\leq 500

Examples

Level up your interview prep. Join Educative to access 70+ hands-on prep courses.