Help me in solving SNAKPROC problem and why my code showing timelimit exceeded

help
,
1

My issue

My code

#include <iostream>
using namespace std;

int main() {
	// your code goes here
	int t;
	cin>>t;
	while(t--){
	    int n,i;
	    cin>>n;
	    string s;
	    string t;
	    cin>>s;
	    for(i=0;i<n;i++)
	    {
	        if(s[i]!='.')
	        {
	            t+=s[i];
	        }
	    }
	    int b=t.length();
	    bool ans=true;
	   
	    if(b%2==0)
	    {
	        for(i=0;i<b-1;i+2)
	        {
	            if((t[i]=='H')&&(t[i+1]=='T'))
	            {
	               ans=true; 
	            }
	            else
	            {
	                ans=false;
	                break;
	            }
	            
	        }
	    }
	    else
	    {
	        ans=false;
	    }
	    
	    
	      
	       if(ans)
	       cout<<"Valid"<<endl;
	      else
	        cout<<"Invalid"<<endl;
	      
	}
	return 0;
}

Problem Link: SNAKPROC Problem - CodeChef

2

@kjha1893
little typo error it should be i+=2 in the for loop