求助WA

#include <bits/stdc++.h>
using namespace std;
int p=0,o=0,x,y;
int main() {
    string s;
    cin >> s;
    s[s.size()]=',';
    for(int i=0;i<s.size();i++){
        int y=i-1;
        if(s[i]==','){
            bool f=true;
            int cnt=0;
            for(int j=x;j<=y;j++){
                if((s[j]>='a'&&s[j]<='z')||(s[j]>='A'&&s[j]<='Z')||(s[j]>='0'&&s[j]<='9')||(s[j]=='!'||s[j]=='@'||s[j]=='#'||s[j]=='$')){
                    cnt++;
                    f=true;
                }else{
                    f=false;
                }

            }
            if(f){
                for(int j=x;j<=y;j++){
                    cout<<s[i];
                }
                cout<<endl;
            }//移动到一道新左边 
            x++;
            x++;
            x+=y;
        }
    }
    return 0;
}