View Code of Problem 69

#include<stdio.h>
int main(void)
{
    int m,n;
    scanf("%d", &m);
    if (m < 1)
        printf("%d\n", m);
    else if (m < 10)
        printf("%d\n", 2 * m - 1);
    else
        printf("%d\n", 3 * m - 11);
}