[UVa] 12195 - Jingle Composing

#include <cstdio>
#include <cstring>
#include <iostream>
#include <cmath>
#define ERROR 1e-11
using namespace std;

char input[1000000];
int main()
{
    int counter, i;
    double sum;
    char *p;
    while (gets(input))
    {
        if (!strcmp(input,"*")) break;


        counter=0;
        p = strtok(input,"/");
        while (p!=NULL)
        {
            for (i=0, sum=0 ; p[i]>='A'&&p[i]<='Z' ; i++)
            {
                if (p[i]=='W') sum += 1.0;
                else if (p[i]=='H') sum += 1.0/2.0;
                else if (p[i]=='Q') sum += 1.0/4.0;
                else if (p[i]=='E') sum += 1.0/8.0;
                else if (p[i]=='S') sum += 1.0/16.0;
                else if (p[i]=='T') sum += 1.0/32.0;
                else if (p[i]=='X') sum += 1.0/64.0;
            }
            if (fabs(sum-1)<ERROR) counter++;
            p = strtok(NULL,"/");
        }
        printf("%d\n",counter);
    }
    return 0;
}