标签：ase for ecif char printf using contain image output
Now for any pair of positive integers N1 and N2, your task is to find the radix of one number while that of the other is given.
Input Specification:
Each input file contains one test case. Each case occupies a line which contains 4 positive integers:N1 N2 tag radixHere N1 and N2 each has no more than 10 digits. A digit is less than its radix and is chosen from the set {0-9, a-z} where 0-9 represent the decimal numbers 0-9, and a-z represent the decimal numbers 10-35. The last number "radix" is the radix of N1 if "tag" is 1, or of N2 if "tag" is 2.
Output Specification:
For each test case, print in one line the radix of the other number so that the equation N1 = N2 is true. If the equation is impossible, print "Impossible". If the solution is not unique, output the smallest possible radix.
Sample Input 1:
6 110 1 10
Sample Output 1:
2
Sample Input 2:
1 ab 1 2
Sample Output 2:
Impossible
Code:
1 #include <bits/stdc++.h> 2 using namespace std; 3 4 typedef unsigned long long LL; 5 6 char a[20], b[20], t[20]; 7 8 LL Trans(char s[], int e) 9 { 10 int len = strlen(s); 11 LL ans = 0; 12 for (int i = 0; i < len; i++) 13 { 14 ans *= e; 15 if (s[i] >= ‘0‘ && s[i] <= ‘9‘) 16 ans += s[i] - ‘0‘; 17 else 18 ans += s[i] - ‘a‘ + 10; 19 } 20 return ans; 21 } 22 23 int main() 24 { 25 int tag, rad; 26 scanf(" %s %s%d%d" , a , b , &tag , &rad); 27 if (tag == 2) 28 { 29 strcpy(t, a); 30 strcpy(a, b); 31 strcpy(b, t); 32 } 33 LL an = Trans(a, rad); 34 int bmax = 0; 35 int blen = strlen(b); 36 for (int i = 0; i < blen; i++) 37 { 38 if (b[i] >= ‘0‘ && b[i] <= ‘9‘) 39 bmax = max(bmax, b[i] - ‘0‘); 40 else 41 bmax = max(bmax, b[i] - ‘a‘ + 10); 42 } 43 44 LL l = bmax + 1, r = an; 45 while (l < r) 46 { 47 LL mid = l + r >> 1; 48 LL amid = Trans(b, mid); 49 if (amid == an) 50 l = r = mid; 51 else if (amid < an) 52 l = mid + 1; 53 else 54 r = mid - 1; 55 } 56 57 if (Trans(b , l) == an) 58 printf("%llu" , l); 59 else 60 printf("Impossible\n"); 61 return 0; 62 }
1010. Radix (25)(进制 + 二分 + 模拟)
标签：ase for ecif char printf using contain image output
原文地址：http://www.cnblogs.com/jianglingxin/p/6828025.html
