10 months ago

suryansh jaiswal • 370

Lucknow

Question 1 solution

void solve()
{
int x,y,z;
cin>>x>>y>>z;

if(x==y)
{
cout<<(2*x+z)*2<<endl;
}
else if(y>x)
{
cout<<(2*x+1+z)*2<<endl;
}
else
{
   if(z==0)
   {
    cout<<(2*y+1)*2<<endl;
   }
   else
    cout<<(2*y+z)*2<<endl;

}






}

10 months ago

suryansh jaiswal • 370

Lucknow

Question 2 solution

   #define ll long long
    #define pb push_back
    ll mod=1e9+7;
    int sumDistance(vector<int>& nums, string s, int d) {
        vector<ll> v;
        ll n=nums.size();
        ll d1=d;
        vector<ll> v1;
        for(int i=0;i<n;i++)
            v1.pb(nums[i]);
        for(int i=0;i<n;i++)
        {
            if(s[i]=='R')
            {
                v.pb(v1[i]+d1);
            }
            else
                v.pb(v1[i]-d1);
        }
        sort(v.begin(),v.end());
        
       ll sum = 0;
    ll ans = 0;
    for (ll i = 0; i < v.size(); i++) {
        ans+=1ll*v[i]*i-sum;
        ans%=mod;
        sum+=v[i];
        sum%=mod;
    }
        return ans;
    }

10 months ago

suryansh jaiswal • 370

Lucknow

Question 3 solution

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

// Return (a+b)!/a!b!
int factorial(int a, int b)
{
	int res = 1;

	// finding (a+b)!
	for (int i = 1; i <= (a + b); i++)
		res = res * i;

	// finding (a+b)!/a!
	for (int i = 1; i <= a; i++)
		res = res / i;

	// finding (a+b)!/b!
	for (int i = 1; i <= b; i++)
		res = res / i;

	return res;
}

// Return the Kth smallest way to reach given coordinate from origin
void Ksmallest(int x, int y, int k)
{
	// if at origin
	if (x == 0 && y == 0)
		return;

	// if on y-axis
	else if (x == 0) {
		// decrement y.
		y--;

		// Move vertical
		cout << "S";

		// recursive call to take next step.
		Ksmallest(x, y, k);
	}

	// If on x-axis
	else if (y == 0) {
		// decrement x.
		x--;

		// Move horizontal.
		cout << "E";

		// recursive call to take next step.
		Ksmallest(x, y, k);
	}
	else {
		// If x + y C x is greater than K
		if (factorial(x - 1, y) > k) {
			// Move Horizontal
			cout << "E";

			// recursive call to take next step.
			Ksmallest(x - 1, y, k);
		}
		else {
			// Move vertical
			cout << "S";

			// recursive call to take next step.
			Ksmallest(x, y - 1, k - factorial(x - 1, y));
		}
	}
}

// Driven Program
int main()
{
	int x = 15, y = 15, k = 21477;

	Ksmallest(x, y, k);

	return 0;
}

​