#include <iostream>
using namespace std;
 
int main() {
	// leggere un numero reale da input, calcolare e stampare 
	// il numero con al più n cifre significative dopo la virgola
	// con n letto da input
	// esempio: 3.1457 => 3.14, -9.453434 => -9.45
	float a;
	cin >> a;
	int n;
	do{
		cin>>n;
	}while(n <= 0);
 
		// 3.1231
		// 2
		int b;
	for(int i=0; i <= n;i++){
		b = a*10;
	}
	// 312.31
	int c = b;
	for(int j = 0; j <= 0;j++){
		int d = c/10;
	}
 
	return 0;
}

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