Algorithm

A. Rounding
time limit per test
1 second
memory limit per test
256 megabytes
Problem link- https://codeforces.com/contest/898/problem/A
input
standard input
output
standard output

Vasya has a non-negative integer n. He wants to round it to nearest integer, which ends up with 0. If n already ends up with 0, Vasya considers it already rounded.

For example, if n = 4722 answer is 4720. If n = 5 Vasya can round it to 0 or to 10. Both ways are correct.

For given n find out to which integer will Vasya round it.

Input

The first line contains single integer n (0 ≤ n ≤ 109) — number that Vasya has.

Output

Print result of rounding n. Pay attention that in some cases answer isn't unique. In that case print any correct answer.

Examples
input
Copy
5
output
Copy
0
input
Copy
113
output
Copy
110
input
Copy
1000000000
output
Copy
1000000000
input
Copy
5432359
output
Copy
5432360
Note

In the first example n = 5. Nearest integers, that ends up with zero are 0 and 10. Any of these answers is correct, so you can print 0 or 10.

 



 

Code Examples

#1 Code Example with C++ Programming

Code - C++ Programming

#include <stdio.h>
#include <string.h>

using namespace std;

int k;
char s[11];

int main() {
	scanf("%s %d", s, &k);

	int len = strlen(s);
	int res = 0, del = 0;
	for(int i = len - 1; i >= 0; --i) {
		if(s[i] == '0')
			++res;
		else
			++del;
		if(res == k)
			break;
	}

	if(res == k)
		printf("%d\n", del);
	else
		printf("%d\n", len - 1);

    return 0;
}
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Input

x
–
+
cmd
5
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Demonstration

Codeforces Solution-Rounding-Solution in C, C++, Java, Python

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