It can be processed as follows.

• Receive \(X\) as a string
• If \(X\) contains a decimal point, output the string before that
• If \(X\) does not contain a decimal point, output \(X\) as it is

Sample Code (C)

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

int main() {
	char x[203];
	scanf("%s", x);
	char *dot_pos = strchr(x, '.');
	if (dot_pos) *dot_pos = '\0';
	puts(x);
	return 0;
}

Sample Code (Python)

x = input()
dot_pos = x.find('.')
if dot_pos != -1 : x = x[:dot_pos]

print(x)