P1597 语句解析

[题目通道](语句解析 - 洛谷)

#include<bits/stdc++.h>
using namespace std;
int n,a=0,s=0,d=0,k,num=0,z=1;
string q;
int main()
{
    cin>>q;
    for (int i=0;i<q.size();i+=5){
    	if (q[i]=='a'){
    		if(q[i+3]=='a')
			a=a;
			else
            if(q[i+3]=='b')
            a=s;
            else
            if(q[i+3]=='c')
            a=d;
            else
            a=q[i+3]-'0';
		}
		if (q[i]=='b'){
    		if(q[i+3]=='a')
			s=a;
			else
            if(q[i+3]=='b')
            s=s;
            else
            if(q[i+3]=='c')
            s=d;
            else
            s=q[i+3]-'0';
		}
		if (q[i]=='c'){
    		if(q[i+3]=='a')
			d=a;
			else
            if(q[i+3]=='b')
            d=s;
            else
            if(q[i+3]=='c')
            d=d;
            else
            d=q[i+3]-'0';
		}
	}
	cout<<a<<" "<<s<<" "<<d;
    return 0;
}