Binary Search Template for C++

#define int            long long int

int low=0,high=1e13,mid;

int ans=1e18;

while(low<=high){

    mid=low+(high-low)/2;

    if(helper(v,mid,m)){

        ans=min(ans,mid);

        high=mid-1; 

    }

    else low=mid+1;

}

cout<<ans<<endl;