poj  3094 Quicksum 水

Quicksum

Description

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

For this problem,you will implement a checksum algorithm called Quicksum. A Quicksum packetallows only uppercase letters and spaces. It always begins and ends with an uppercaseletter. Otherwise, spaces and letters can occur in any combination, includingconsecutive spaces.

A Quicksum is thesum of the products of each character's position in the packet times thecharacter's value. A space has a value of zero, while letters have a valueequal to their position in the alphabet. So, A=1, B=2, etc., through Z=26. Hereare 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

Input

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

Output

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

Sample Input

ACM

MID CENTRAL

REGIONALPROGRAMMING CONTEST

ACN

A C M

ABC

BBC

#

Sample Output

46

650

4690

49

75

14

15

代码：

//poj  3094Quicksum
#include <iostream>
#include <string>
usingnamespace std;
 
int main(int argc,charconst*argv[])
{
    //freopen("in.txt","r", stdin);
    string str;
    while(getline(cin,str)&&(str[0]!='#')){
       int sum=0;
       for(int i=0; i<str.size(); i++){
           if(str[i]==' ')continue;
            sum+=(i+1)*(str[i]-'A'+1);
        }
        cout<< sum<< endl;
    }
    return0;
}