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why WA ? i think my algorithm is not working properly.Any hints ??
Thanks in advance !

#include<iostream>
#include<math.h>
#include<stdio.h>
#include<ctype.h>
#include<stdlib.h>
using namespace std;


long long n,k,c,t;
long long y=0,xx,temp;
long long sum (long long aa[],long long nn)
{
long ...