View Code of Problem 118

#include<stdio.h>

int main()
{
	int n, count = 1;
	while(scanf("%d", &n) != EOF)
	{
		long long sum = 5;
		if(n <= 3)
		{
			printf("Case #%d: 5\n", count++);
			continue;
		}
		n -= 3;
		sum += 1.5 * n;
		if(n%2 != 0)
			sum++;
		printf("Case #%d: %lld\n", count++, sum);
	}
	return 0;
}