南邮 OJ 1027 Quicksum

Quicksum

时间限制(普通/Java) : 1000 MS/ 3000 MS          运行内存限制 : 65536 KByte

总提交 : 711            测试通过 : 327 

比赛描述

A checksum is an algorithm that scans a packet of data and returns a single number. The idea is that if the packet is changed, the checksum will also change, so checksums are often used for detecting transmission
errors, validating document contents, and in many other situations where it is necessary to detect undesirable changes in data.

For this problem, you will implement a checksum algorithm called Quicksum. A Quicksum packet allows only uppercase letters and spaces. It always begins and ends with an uppercase letter. Otherwise, spaces and
letters can occur in any combination, including consecutive spaces.

A Quicksum is the sum of the products of each character's position in the packet times the character's value. A space has a value of zero, while letters have a value equal to their position in the alphabet. So,
A=1, B=2, etc., through Z=26. Here are example Quicksum calculations for the packets "ACM" and "MID CENTRAL":

        ACM: 1*1  + 2*3 + 3*13 = 46

 

MID CENTRAL: 1*13 + 2*9 + 3*4 + 4*0 + 5*3 + 6*5 + 7*14 + 8*20 + 9*18 + 10*1 + 11*12 = 650

输入

The input consists of one or more packets followed by a line containing only # that signals the end of the input. Each packet is on a line by itself, does not begin or end with a space, and
contains from 1 to 255 characters.

输出

For each packet, output its Quicksum on a separate line in the output.

样例输入

ACM

MID CENTRAL

REGIONAL PROGRAMMING CONTEST

ACN

A C M

ABC

BBC

#

样例输出

46

650

4690

49

75

14

15

提示

 

题目来源

Mid-Central USA Region 2006

#include <iostream>
#include <string>
using namespace std;

int main(){
string str;
unsigned int i=0;
unsigned long Quicksum =0;
while(getline(cin,str) && str!="#"){
i = 0;
Quicksum = 0;
while(str[i]){
if(str[i]>='A' && str[i]<='Z'){
Quicksum += (i+1)*(str[i]-'A'+1);
}
++i;
}
cout<<Quicksum<<endl;
}
}