#691 - Номера автобусов [+]

#include <iostream>
#include <cmath>
#include <vector>
#include <algorithm>
#include <cstdio>
#include <math.h>
#include <string>
#include <stdio.h>
#include <string.h>
#include <string>
#include <stdlib.h>
#include <cmath>
#include <iomanip>
#include <fstream>

using namespace std;

bool checkLetter(char a) {
    if (a == 'A' || a == 'B' || a == 'C' || a == 'E' || a == 'H' || a == 'K' || a == 'M' || a == 'O' || a == 'P' || a == 'T' || a == 'X' || a =='Y') {
        return true;
    }
    else {
        return false;
    }
}

bool checkDigit(char b) {
    if (b == '1' || b == '2' || b == '3' || b == '4' || b == '5' || b == '6' || b == '7' || b == '8' || b == '9' || b == '0') {
        return true;
    }
    else {
        return false;
    }
}

int main(int argc, const char * argv[]) {
    int numberTests;
    cin>>numberTests;
    string regNumbers[55];
    for (int i=0; i<numberTests; i++) {
        cin>>regNumbers[i];
    }

    for (int i=0; i<numberTests; i++) {
        if (regNumbers[i].length() == 6 && checkLetter(regNumbers[i].at(0)) && checkDigit(regNumbers[i].at(1)) && checkDigit(regNumbers[i].at(2)) && checkDigit(regNumbers[i].at(3)) && checkLetter(regNumbers[i].at(4)) && checkLetter(regNumbers[i].at(5))) {
            cout<<"Yes"<<endl;
        }
        else {
            cout<<"No"<<endl;
        }
    }

    return 0;
}