1395. Rounders

	Time Limit: 1sec Memory Limit:32MB Description For a given number, if greater than ten, round it to the nearest ten, then (if that result is greater than 100) take the result and round it to the nearest hundred, then (if that result is greater than 1000) take that number and round it to the nearest thousand, and so on ... Input Input to this problem will begin with a line containing a single integer n indicating the number of integers to round. The next n lines each contain a single integer x (0 <= x <= 99999999). Output For each integer in the input, display the rounded integer on its own line. Note: Round up on fives. Sample Input Copy sample input to clipboard 9 15 14 4 5 99 12345678 44444445 1445 446 Sample Output 20 10 4 5 100 10000000 50000000 2000 500

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

int main()
{
	int cases;
	cin>>cases;
	while(cases--)
	{
		int a,duplicate,mark=1;
		cin>>a;
		if(a<=10)
		{
			cout<<a<<endl;
			continue;
		}
		duplicate=a;
		while(true)
		{
			int temp=duplicate%10,tens=pow(10.0,mark);;
			if(temp>=5) a=(a/tens+1)*tens;
			else a=(a/tens)*tens;
			//if(duplicate/10==0) break;
			duplicate=a;
			duplicate/=tens;
			if(duplicate/10==0) break;
			mark++;
		}
		cout<<a<<endl;
	}
	return 0;
}