#include <iostream>
 
using namespace std;
 
 
int main(void) {
	int const size = 603;  //2000*log(2)=602.059991328
	int const times =2000;
	bool toggle = false;
	int digit_arr[size];
	int i, j;
	for (i = 0; i < size; i++) {
		digit_arr[i] = 0;
	}
 
	digit_arr[0] = 1;
 
	for (i = 0; i < times; i++) {
		for (j = 0; j < size - 1; j++) {
 
			digit_arr[j] *= 2;
 
		}
 
		for (j = size - 1; j >= 0; j--) {
			if (digit_arr[j] > 9) {
				digit_arr[j] %= 10;
				digit_arr[j + 1] += 1;
			}
		}
 
 
 
 
	}
 
 
	for (i = size-1; i >= 0; i--) {
		if (digit_arr[i] > 0)
			toggle = true;
 
		if(toggle)
		cout << digit_arr[i];
	}
	cout << endl;
 
 
	return 0;
}

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