Need help for better approach in question (SINGTOUR)

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I need help for better approach .
thanks in advance

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SINGTOUR-Editorial

PROBLEM LINK: Practice Editorialist: Adithya Dsilva DIFFICULTY: EASY PREREQUISITES: Sorting, Pair (its equivalent in your language) PROBLEM: You are given the voice ranges \{L,U\} of N singers. If singers i and j\space(i\not=j) compete with each other, singer i gets 2 points if range \{L_i,U_i\} completely covers range \{L_j,U_j\} and some more values. singer j gets 2 points if range \{L_j,U_j\} completely covers range \{L_i,U_i\} and some more values. otherwise, both singers i and j get 1…