poj 2719 Faulty Odometer

Faulty Odometer

Time Limit: 1000MS Memory Limit: 65536KTotal Submissions: 7042 Accepted: 4375

Description

You are given a car odometer which displays the miles traveled as an integer. The odometer has a defect, however: it proceeds from the digit 3 to the digit 5, always skipping over the digit 4. This defect shows up in all positions (the one's, the ten's, the hundred's, etc.). For example, if the odometer displays 15339 and the car travels one mile, odometer reading changes to 15350 (instead of 15340).

Input

Each line of input contains a positive integer in the range 1..999999999 which represents an odometer reading. (Leading zeros will not appear in the input.) The end of input is indicated by a line containing a single 0. You may assume that no odometer reading will contain the digit 4.

Output

Each line of input will produce exactly one line of output, which will contain: the odometer reading from the input, a colon, one blank space, and the actual number of miles traveled by the car.

Sample Input

131520032005239250139915009999990

Sample Output

13: 1215: 132003: 14612005: 1462239: 197250: 1981399: 10521500: 1053999999: 531440

Source

Rocky Mountain 2005

 

开始在POJ上刷题。。。。这道题目刚开始做的时候，一直在思考，几位数字到底有多少重复

后来突然想到，这只是变成了9进制而已！

 

#include<stdio.h>

int main()

{

    int x;

    while(scanf("%d",&x)!=EOF)

    {

        if(x==0) break;

        int t=x,s=0;

        int jin=1;

        while(t)

        {

            int a=t%10;

            t=t/10;

            if(a>4) a=a-1;

            s=s+a*jin;

            jin=jin*9;

        }

        printf("%d: %d/n",x,s);

    }

    return 0;

}