Solution of 'Divisible Sum Pairs' (HackerRank)
Hi all! Here's my solution to the problem 'Divisible Sum Pairs' from HackerRank. #include <bits/stdc++.h> #define int long long #define pb push_back #define fi first #define se second #define pii pair < int,int > using namespace std ; int divisibleSumPairs ( int n , int k , vector < int > ar ) { int cnt = 0 ; for ( int i = 0 ; i < n ; i ++){ for ( int j = i + 1 ; j < n ; j ++){ if (( ar [ i ] + ar [ j ] )% k == 0 ) cnt ++; } } return cnt ; } int32_t main () { int n , k ; cin >> n >> k ; vector < int > num ; for ( int i = 0 ; i < n ; i ++){ int x ; cin >> x ; num . pb ( x ); } int res = divisibleS...