1 #define _CRT_SECURE_NO_WARNINGS
2 #include <stdio.h>
3 #include <math.h>
4 #include <algorithm>
5 #include <stdlib.h>
6 #include <vector>
7 #include <map>
8 #include <queue>
9 #include <string>
10 #include <iostream>
11 #include <ctype.h>
12 #include <string.h>
13 #include <set>
14 #include <stack>
15 #include<functional>
16 using namespace std;
17 #define Size 105
18 #define maxn 1<<30
19 #define minn 1e-6
20 char str1[Size], str2[Size];
21
22 int main(){
23 memset(str1, 0, sizeof(str1));
24 memset(str2, 0, sizeof(str2));
25 scanf("%s%s", str1, str2);
26 int len1 = strlen(str1);
27 int len2 = strlen(str2);
28 for (int i = 0; i < 6; i++)
29 {
30 if (str1[i] == '\0') str1[i] = '0';
31 if (str2[i] == '\0') str2[i] = '0';
32 }
33 str1[6] = str2[6] = 0;
34 /*
35 求loga(b) = log10b/log10a
36 log10b 的近似值是 lenstrb-1+log10(atoi(str2) / 1e5) 后面的那么多位数不用看了
37 */
38 printf("%d\n", int((log10(atoi(str2) / 1e5) + len2 - 1) / (log10(atoi(str1) / 1e5) + len1 - 1)));
39 //注意是除过以后再取整而不是取整以后再除
40 system("pause");
41 }
