View Code of Problem 69

#include<stdio.h>
int qiuy(int x);
int main()
{
    int x,y;
    scanf("%d",&x);
    printf("%d",qiuy(x));



}
int qiuy(int x)
{
    int y;
    if(x<1) y=x;
    if(x>=1&&x<10) y=2*x-1;
    if(x>=10) y=3*x-11;
    return y;
}