#include <iostream>
#include <limits>
#include <cmath>
#include <bitset>
 
using namespace std;
 
int main() {
	// your code goes here
	unsigned  x = 0b01111100010000000000000000000010;
   //result shud be 10111100010000000000000000000010
	unsigned pattern = 0b10111;
	size_t numOfBitsToBeReplaced = 4;
 
	size_t afterBitPos = floor(log2(x)) - numOfBitsToBeReplaced + 1;
	size_t numberOfBits = (std::numeric_limits<unsigned>::digits - floor(log2(x)) - 1 + numOfBitsToBeReplaced );
 
	//Clear "numberOfBits" MSBs
	x <<= numberOfBits;
	x >>= numberOfBits;
 
	pattern <<= afterBitPos; //Position them in MSB positions.
 
	x = x | pattern;
 
	std::bitset<32> y(x);
 
	cout << y;
 
	return 0;
}

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