Help me in solving ONEORTWO problem

help
,
1

My issue

i want a girlfrriend

My code

#include <bits/stdc++.h>
#define ll long long
#define pb push_back
#define mp make_pair
#define mod 1000000007
using namespace std;


//------------------------------------------------------------------
int isprime(ll a)
{
    if(a==1)return 0;
    if(a==2||a==3)return 1;
    else if(a%2==0||a%3==0)return 0;
    else
    {
       for(ll i=5;i*i<=a;i+=2)
        {
        if(a%i==0)return 0;
        }
      return 1;
    }
}
ll power(ll a,ll b)
{
    ll ans=1;
    while(b)
    {
        if(b&1)ans=(ans*a)%mod;
        a=(a*a)%mod;
        b=b/2;
    }
    return ans;
    
}

ll fact(ll f)
{
    return (f <= 1) ? 1 : f * fact(f - 1); 
}

bool sortbysec(const pair<int,int> &a,const pair<int,int> &b)
{
    return (a.second < b.second);
}


int main()
{
    cin.tie(NULL);
    cout.tie(NULL);
    ll t;
    cin>>t;
    while(t--)
    {
        
       cout<<endl;
    }
}

Problem Link: One Stone or Two Stones Practice Coding Problem - CodeChef