#include <iostream>
#include <fstream>
using namespace std;

int main(int argc, char *argv[]) {
		int *array, *results, length, i = 0, look;
		ifstream in("array.in");
		ofstream out("array.out");

		in >> length >> look; //first two values should be length and target
		array = new int[length];
		results = new int[length];
		while(in >> array[i++]) {}
		
		for (i = 0; i < length; i++) if (array[i] == look) out << i << endl;

		delete [] array;
		delete [] results;
		return 0;
}