HDU 1283

http://acm.hdu.edu.cn/showproblem.php?pid=1283

#include<iostream>
#include<string>
using namespace std;
int main()
{
	int m1,m2;
	string str;
	while(cin>>m1>>m2>>str)
	{
		int r1=0,r2=0,r3=0,i;
		int t=str.length();
		for(i=0;i<t;i++)
		{
			if(str[i]=='A') {r1=m1;continue;}
			if(str[i]=='B') {r2=m2;continue;}
			if(str[i]=='C') {m1=r3;continue;}
			if(str[i]=='D') {m2=r3;continue;}
			if(str[i]=='E') {r3=r1+r2;continue;}
			if(str[i]=='F') {r3=r1-r2;continue;}
		}
		cout<<m1<<','<<m2<<endl;
	}
	return 0;
}