94-cigarettes

內存限制:64MB 時間限制:3000ms 特判: No
通過數:13 提交數:20 難度:2

題目描述:

Tom has many cigarettes. We hypothesized that he has n cigarettes and smokes them

one by one keeping all the butts. Out of k > 1 butts he can roll a new cigarette.
Now，do you know how many cigarettes can Tom has?

輸入描述:

First input is a single line,it‘s n and stands for there are n testdata.then there are n lines ,each line contains two integer numbers giving the values of n and k.

輸出描述:

For each line of input, output one integer number on a separate line giving the maximum number of cigarettes that Peter can have.

樣例輸入:

3
4 3
10 3
100 5

樣例輸出:

5
14
124

C/C++ AC

 1 #include <iostream>
 2 #include <algorithm>
 3 #include <cstring>
 4 #include <cstdio>
 5
 
 #include <cmath>
 6 #include <stack>
 7 #include <set>
 8 #include <map>
 9 #include <queue>
10 #include <climits>
11 
12 using namespace std;
13 const int MAX = 1e6 + 10;
14 int n, a, b;
15 
16 int main()
17 {
18     cin >>n;
19     while (n --)
20     {
21         int ans = 0, temp;
22         scanf("%d%d", &a, &b);
23 
24         while (a >= b)
25         {
26             temp = a / b;
27             ans += temp * b; // temp * b 表示已經用過的
28             a = temp + a % b;
29         }
30         ans += a;
31         printf("%d\n", ans);
32     }
33 }

nyoj 94-cigarettes (分清楚，那一部分的cigarettes是用過的，那一部分是沒有用過的)