#include <iostream>
using namespace std;

void x1() {
    for (int i=1; i<=100; i++) 
        if (!(i%3==0 && i%7==0))
            cout << i << " "; 
    cout << endl;
}

//x2
void printPropedia(int num) {
    for (int i=0; i<=9; i++)
        cout << i << "x" << num << " = " << i*num << endl;
}

//x3
void printPropedia() {
    for (int i=2; i<=9; i++) {
        printPropedia(i);
        cout << endl;
    }
}

//x4
double maxOfUserInput(int plithos) {
    double max,  inputValue;
    for (int i=0; i<plithos; i++) {
        cout << "Enter Value: ";
        cin >> inputValue;
        cout << endl;
        if (i==0 || inputValue>max) max=inputValue;
    }
    return max;
}

//x5
int fibonacci(int n) {
    if (n==1 || n==2) return 1;
    int nMinus1=1, nMinus2=1, rVal;
    for (int i=3; i<=n; i++) {
        rVal=nMinus1+nMinus2;
        nMinus2=nMinus1;
        nMinus1=rVal;
    }
    return rVal;
}

//x6
bool isEven(int i) {
    return i%2==0;
}

void prtLastDigitName(int k) {
    int lastDigit=k%10;
    switch (lastDigit) {
        case 0: cout << "Zero"; break;
        case 1: cout << "One"; break;
        case 2: cout << "Two"; break;
        case 3: cout << "Three"; break;
        case 4: cout << "Four"; break;
        case 5: cout << "Five"; break;
        case 6: cout << "Six"; break;
        case 7: cout << "Seven"; break;
        case 8: cout << "Eight"; break;
        case 9: cout << "Nine"; break;
    }
    cout << endl;
}

int main(int argc, char** argv) {
    //x1();
    //printPropedia(5);
    //printPropedia();
    for (int i=1; i<=10; i++)
        cout << i << " " << (isEven(i)?"even":"odd") << endl;
    for (int i=1; i<=10; i++)
        cout << i << " " << fibonacci(i) << endl;
    for (int i=10; i<=19; i++)
        prtLastDigitName(i);
    cout << endl;
    return 0;
}