OJ Board

Got a wrong answer....
Can any one help? I tried with all the inputs that i could gather. It seems to provide the correct results :

#include<iostream>
#include<cmath>
#include<vector>
#define fir(i,x) for(int i=0;i<x;i++)
#define ll long long
using namespace std;

int main(){

ll n,k,m;
cin>>n ...