1327A. Sum of Odd Integers - Codeforces Solution C++

  Problem Link : 1327A. Sum of Odd Integers 


✅ C++ Solution :

 
#include<bits/stdc++.h>
using namespace std;

#define ll long long int

int main()
{
	int t;
	cin>>t;
	while(t--)
	{
		ll n,k;
		cin>>n>>k;
		if(n%2==1)
		{
			if(k%2==0)
				cout<<"NO\n";
			else
			{
				ll val=k*k;
				if(n>=val)
					cout<<"YES\n";
				else
					cout<<"NO\n";
			}
		}
		else
		{
			if(k%2==1)
				cout<<"NO\n";
			else
			{
				ll val=k*(k);
				if(n>=val)
					cout<<"YES\n";
				else
					cout<<"NO\n";

			}
		}
	}
}

 

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