#include <iostream>
#include <vector>
#include <algorithm>

int max_points(std::vector<int>& chocolates, int initial) {
    std::sort(chocolates.begin(), chocolates.end());
    int points = 0;
    int max_points = 0;

    for (int i = 0; i < chocolates.size(); ++i) {
        if (chocolates[i] <= initial) {
            initial -= chocolates[i];
            points++;
            max_points = std::max(max_points, points);
        } else {
            break;
        }
    }

    return max_points;
}

int main() {
    int n;
    std::cin >> n; // Number of chocolates
    std::vector<int> chocolates(n);

    for (int i = 0; i < n; ++i) {
        std::cin >> chocolates[i];
    }

    int initial_chocolates;
    std::cin >> initial_chocolates; // Initial chocolates Bittu has

    int result = max_points(chocolates, initial_chocolates);
    std::cout << result;

    return 0;
}

Chocolates code ✅✅

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Hamming Distance
Java
TCS Codevita


import java.util.Scanner;

public class HammingDistance {

    public static void main(String[] args) {
      
        Scanner scanner = new Scanner(System.in);

        int T = scanner.nextInt();

        while (T-- > 0) {
            String binaryString = scanner.next();
            int A = scanner.nextInt();
            int B = scanner.nextInt();

            int res = calculateHammingDistance(binaryString, A, B);

            if(res == -1){
                System.out.print("INVALID");
            }
            else{
                System.out.print(res);
            }
        }
       
    }

   public static int calculateHammingDistance(String binaryString, int A, int B)  {
        int res = 0;

        for (int i = 0; i < binaryString.length() - 1; i++) {
            char ch = binaryString.charAt(i);

            if(ch != '1' && ch != '0'){
                return -1;
            }

            if(ch == '1'){
                if(A < B){
                    if(i-1 >= 0 && binaryString.charAt(i-1) == '0'){
                        res += A;
                    }
                    else if(i+1 <= (binaryString.length()-1) && binaryString.charAt(i+1) == '0'){
                        res += B;
                        i++;
                    }
                }
                else{
                    if(i+1 <= (binaryString.length()-1) && binaryString.charAt(i+1) == '0'){
                        res += B;
                        i++;
                    }
                    else if( i-1 >= 0 &&binaryString.charAt(i-1) == '0'){
                        res += A;
                    }
                }
            }
        }

        return res;
    }
}

Hamming Distance
Java
TCS Codevita

from sys import maxsize


def help(string):
    n = len(string)
    st = set()
    st.add(string[0])
    for i in range(1, n):
        if string[i] == string[i - 1]:
            continue
        if string[i] in st:
            return False
        st.add(string[i])
    return True


def minSwaps(string, l, r, cnt, minm):
    if l == r:
        if help(string):
            return cnt
        else:
            return maxsize
    for i in range(l + 1, r + 1, 1):
        string[i], string[l] = string[l], string[i]
        cnt += 1
        x = minSwaps(string, l + 1, r, cnt, minm)
        string[i], string[l] = string[l], string[i]
        cnt -= 1
        y = minSwaps(string, l + 1, r, cnt, minm)
        minm = min(minm, min(x, y))
    return minm


n = int(input())
alist = []
for i in input().split():
    alist.append(i)
ans = minSwaps(alist, 0, n - 1, 0, maxsize)
print(ans)


Art_shift code
TCS CODEVITA✅
Python3

def ans(numbers):
    numbers.sort()
    n = len(numbers)
    magic = 0

    for i in range(n):
        van = 0
        priority = 1

        for j in range(i, n):
            van += numbers[j] * priority
            priority += 1

            if van > magic:
                magic = van
    return magic

numbers = list(map(int, input().split()))

result = ans(numbers)
if result > 0:
    print(result, end="")
else:
    print(0, end="")


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def shyam_and_strings(s1, s2, k):
    n, m = len(s1), len(s2)
    dp = [[0] * (m + 1) for _ in range(n + 1)]

    for i in range(n + 1):
        for j in range(m + 1):
            if i == 0 or j == 0:
                dp[i][j] = 0
            else:
                cnt = 0
                if s1[i - 1] != s2[j - 1]:
                    cnt = min(abs(ord(s1[i - 1]) - ord(s2[j - 1])), 26 - abs(ord(s1[i - 1]) - ord(s2[j - 1])))

                if cnt <= k:
                    dp[i][j] = 1 + dp[i - 1][j - 1]

                dp[i][j] = max(dp[i][j], max(dp[i - 1][j], dp[i][j - 1]))

    return dp[n][m]

s1 = input().strip()
s2 = input().strip()
k = int(input().strip())
if not s1 or not s2:
  print(0)
else:
  print(shyam_and_strings(s1, s2, k), end="")

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