A. Boy or Girl Solution

#include<bits/stdc++.h>

using namespace std;

int main()

{

    char s[105];

    char news[27]="11111111111111111111111111";

    cin>>s;

    int flag=0,i,j,k=0;

    int l=strlen(s);

    int count=0;

    for (i=0; i<l; i++)

    {

        for (j=0; j<27; j++)

        {

            if (s[i]==news[j])

            {

                flag=1;

                break;

            }

        }

        if (flag==0)

        {

            news[k++]=s[i];

            count++;

        }

        else if (flag==1)

            flag=0;

    }

    if (count%2==0)

        cout<<"CHAT WITH HER!"<<endl;

    else

        cout<<"IGNORE HIM!"<<endl;

    return 0;

}