题目大意:十进制与十六进制之间的相互转换. #include <cstdio> int main() { #ifdef LOCAL freopen("in", "r", stdin); #endif ]; while (gets(str)) { int n; ] == 'x') { sscanf(str, "%x", &n); printf("%d\n", n); } else { sscanf(str,…

题目链接:uva 12253 - Simple Encryption 题目大意:给定K1.求一个12位的K2,使得KK21=K2%1012 解题思路:按位枚举,不且借用用高速幂取模推断结果. #include <cstdio> #include <cstring> #include <algorithm> using namespace std; typedef long long ll; const ll ite=(1<<20)-1; ll N; /* l…

Description Write a program to convert numbers in one base to numbers in a second base. There are 62 different digits: { 0-9,A-Z,a-z } HINT: If you make a sequence of base conversions using the output of one conversion as the input to the next, when…

题目连接:1220 NUMBER BASE CONVERSION 题目大意:给出两个进制oldBase 和newBase, 以及以oldBase进制存在的数.要求将这个oldBase进制的数转换成newBase进制的数. 解题思路:短除法,只不过时直接利用了高精度的除法运算, 并且将以前默认的*10换成的*oldBase. #include <stdio.h> #include <string.h> const int N = 1005; int newBase, oldBase,…

UVA - 10014 Simple calculations Time Limit: 3000MS Memory Limit: Unknown 64bit IO Format: %lld & %llu id=19100" style="color:blue">Submit Status Description  Simple calculations  id=19100" style="color:blue">The Pro…

题目链接:uva 10994 - Simple Addition 题目大意:给出l和r,求∑(l≤i≤r)F(i), F(i)函数题目中有. 解题思路:由两边向中间缩进,然后l和r之间的数可以按照1~9划分(只会有这几种情况). #include <stdio.h> #define ll long long ll ans; ll f(ll x) { if (x == 0) return 0; else if (x % 10) return x % 10; else return f(x / 1…

NUMBER BASE CONVERSION Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 5976   Accepted: 2738 Description Write a program to convert numbers in one base to numbers in a second base. There are 62 different digits: { 0-9,A-Z,a-z } HINT: If…

http://www.exploringbinary.com/base-conversion-in-php-using-built-in-functions/ http://www.binaryconvert.com/convert_float.html?decimal=054046056050049051 https://www.codeproject.com/Tips/387989/Convert-Binary-Single-Precision-Value-to-Float-in funct…

题意 Write a program to convert numbers in one base to numbers in a second base. There are 62 different digits: { 0-9,A-Z,a-z } HINT: If you make a sequence of base conversions using the output of one conversion as the input to the next, when you get b…

http://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=955 根据递推公式推倒出a1的公式. a1=(n*a0+an+1-2*(n*c1+(n-1)*c2+...+cn))/(n+1); #include <cstdio> #include <cstring> #include <algorithm> #defi…