#include <iostream>
using namespace std;

int roundUp(int numToRound, int multiple) 
{ 
 if(multiple == 0) 
 { 
  return numToRound; 
 } 

 int remainder = numToRound % multiple;
 if (remainder == 0)
  return numToRound;
 return numToRound + multiple - remainder;
} 

int main() {
	cout << roundUp(30, 30) << endl;
	return 0;
}