1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12

#include<stdio.h>
#include<string.h>
int main() {
	char s[100];
	while(scanf("%s",s)!=EOF) {
		if(strcmp(s,"1")==0)
			printf("5\n");
		else
			printf("25\n");
	}
	return 0;
}