Relative atomic mass

Relative atomic mass

Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)
Total Submission(s): 617    Accepted Submission(s):
516

Problem Description

Relative atomic mass is a dimensionless physical
quantity, the ratio of the average mass of atoms of an element (from a single
given sample or source) to 12

of the mass of an atom of carbon-12 (known as the unified atomic mass
unit).
You need to calculate the relative atomic mass of a molecule, which
consists of one or several atoms. In this problem, you only need to process
molecules which contain hydrogen atoms, oxygen atoms, and carbon atoms. These
three types of atom are written as ’H’，’O’ and ’C’ repectively. For your
information, the relative atomic mass of one hydrogen atom is 1, and the
relative atomic mass of one oxygen atom is 16 and the relative atomic mass of
one carbon atom is 12. A molecule is demonstrated as a string, of which each
letter is for an atom. For example, a molecule ’HOH’ contains two hydrogen atoms
and one oxygen atom, therefore its relative atomic mass is 18 = 2 * 1 +
16.

 

Input

The first line of input contains one integer N(N ≤ 10),
the number of molecules. In the next N lines, the i-th line contains a string,
describing the i-th molecule. The length of each string would not exceed
10.

 

Output

For each molecule, output its relative atomic mass.

 

Sample Input

5
H
C
O
HOH
CHHHCHHOH

 

Sample Output

1
12
16
18
46

 

Source

2016ACM/ICPC亚洲区沈阳站-重现赛（感谢东北大学）

【思路】模拟

【code】

#include<iostream>
#include<cstdio>
using namespace std;
string s;
int ans,n;
int main()
{
    scanf("%d",&n);
    for(int i=;i<=n;i++)
    {
        cin>>s;ans=;
        for(int i=;i<s.size();i++)
        {
            if(s[i]=='C')ans+=;
            if(s[i]=='O')ans+=;
            if(s[i]=='H')ans++;
        }
        printf("%d\n",ans);
     }
    return ;
}