3_2uva1586

#include <stdlib.h>
#include <stdio.h>
#include <strings.h>
#include <ctype.h>
/* 
 * ===  FUNCTION  ======================================================================
 *         Name:  main
 *  Description:  
 * =====================================================================================
 */
/* 
 * ===  FUNCTION  ======================================================================
 *         Name:  get_g
 *  Description:  
 * =====================================================================================
 */
float get_g ( char a )
{
    switch(a){
        case 'C':
            return 12.01;
            break;
        case 'H':
            return 1.008;
            break;
        case 'O':
            return 16.00;
            break;
        case 'N':
            return 14.01;
            break;
        default:
            return -1.0;
    }
}		
int main ( int argc, char *argv[] ) {
    char buf[101]={}; 
    int flag = 0;
    float sum = 0.0;
    int i = 0 ;
    int j = 0;
    int count = 0;
    while( (scanf("%s", buf)!=EOF) ){
        flag = 0;
        for (i = 0; buf[i]!='