You've got a rectangular table with length a and width b and the infinite number of plates of radius r. Two players play the following game: they take turns to put the plates on the table so that the plates don't lie on each other (but they can touch each other), and so that any point on any plate is located within the table's border. During the game one cannot move the plates that already lie on the table. The player who cannot make another move loses. Determine which player wins, the one who moves first or the one who moves second, provided that both players play optimally well.

Input

A single line contains three space-separated integers a, b, r (1 ≤ a, b, r ≤ 100) — the table sides and the plates' radius, correspondingly.

Output

If wins the player who moves first, print "First" (without the quotes). Otherwise print "Second" (without the quotes).

Examples

Input

5 5 2


Output

First


Input

6 7 4


Output

Second

Note

In the first sample the table has place for only one plate. The first player puts a plate on the table, the second player can't do that and loses.

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In the second sample the table is so small that it doesn't have enough place even for one plate. So the first player loses without making a single move.

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// author: Ahmed A.M
import java.util.*;
import java.io.*;

public class Main {

    public static void main(String[] args) throws FileNotFoundException {
        //Scanner input = new Scanner(System.in);
        //S1 p1 = new S1();   p1.solve();
        //S2 p2 = new S2();   p2.solve();
        //S3 p3 = new S3();   p3.solve();
        //S4 p4 = new S4();   p4.solve();
        //S5 p5 = new S5();   p5.solve();
        //S6 p6 = new S6();   p6.solve();
        //S7 p7 = new S7();   p7.solve();
        //S8 p8 = new S8();   p8.solve();
        //S9 p9 = new S9();   p9.solve();
        //S10 p10 = new S10();    p10.solve();
        //S11 p11 = new S11();    p11.solve();
        //S12 p12 = new S12();    p12.solve();
        //S13 p13 = new S13();    p13.solve(); *  confusing
        //S14 p14 = new S14();    p14.solve();
        //S15 p15 = new S15();    p15.solve();
        //S16 p16 = new S16();    p16.solve();
        //S17 p17 = new S17();    p17.solve();
        //S18 p18 = new S18();    p18.solve(); * without help?
        //S19 p19 = new S19();    p19.solve(); * without set ?
        //S20 p20 = new S20();    p20.solve(); * confusing * Data Types
        //S21 p21 = new S21();    p21.solve(); * confusing and fuzzy thinking
        //S22 p22 = new S22();    p22.solve();
        //S23 p23 = new S23();    p23.solve(); * very annoying problem in very annoying moments
        //S24 p24 = new S24();    p24.solve();
        //S25 p25 = new S25();    p25.solve();
        //S26 p26 = new S26();    p26.solve();
        //S27 p27 = new S27();    p27.solve();
        //S28 p28 = new S28();    p28.solve();
        //S29 p29 = new S29();    p29.solve();
        //S30 p30 = new S30();    p30.solve();
        //S31 p31 = new S31();    p31.solve();
        //S32 p32 = new S32();    p32.solve();
        //S33 p33 = new S33();    p33.solve();
        //S34 p34 = new S34();    p34.solve();
        //S35 p35 = new S35();    p35.solve();
        //S36 p36 = new S36();    p36.solve(); * Repeated mistakes
        //S37 p37 = new S37();    p37.solve();
        //S38 p38 = new S38();    p38.solve();
        //S39 p39 = new S39();    p39.solve(); * Not good
        //S40 p40 = new S40();    p40.solve();
        //S41 p41 = new S41();    p41.solve(); * Observations
        //S42 p42 = new S42();    p42.solve(); 
        //S43 p43 = new S43();    p43.solve(); * don't understand it
        //S45 p45 = new S45();    p45.solve(); * 2    
        //S46 p46 = new S46();    p46.solve(); * 1
        //S47 p47 = new S47();    p47.solve(); * 1
        //S48 p48 = new S48();    p48.solve(); * 1
        //S49 p49 = new S49();    p49.solve(); * 4 * Cascading of mistakes
        //S50 p50 = new S50();    p50.solve(); * 2 I've to eat now
        //S51 p51 = new S51();    p51.solve(); * 1
        //S52  p52 = new S52();  p52.solve();  * 2 
        //S53 p53 = new S53();    p53.solve(); * 3
        //S54 p54 = new S54();    p54.solve(); * 1
        //S55 p55 = new S55();    p55.solve(); * 1
        //S56 p56 = new S56();    p56.solve(); * 1
        //S57 p57 = new S57();    p57.solve(); * 1
        //S58 p58 = new S58();    p58.solve(); * 3
        //S59 p59 = new S59();    p59.solve(); * 1
        //S60 p60 = new S60();    p60.solve(); * 1
        //S61 p61 = new S61();    p61.solve(); * 1
        //S62 p62 = new S62();    p62.solve(); * 1
        //S63 p63 = new S63();    p63.solve(); * 1
        //S64 p64 = new S64();    p64.solve(); * 
        // -----
        //S67 p67 = new S67();    p67.solve(); * 2
        //S68 p68 = new S68();    p68.solve(); * 1  
        //S69 p69 = new S69();    p69.solve();
        //S70 p70 = new S70();    p70.solve(); * 1
        //S71 p71 = new S71();    p71.solve();
        //S72 p72 = new S72();    p72.solve();
        //S73 p73 = new S73();    p73.solve();
        //S74 p74 = new S74();    p74.solve(); * 2
        //S78 p78 = new S78();    p78.solve(); * 1
        //S79 p79 = new S79();    p79.solve(); * 1
        //S80 p80 = new S80();    p80.solve(); * 1
        //S81 p81 = new S81();    p81.solve(); * inf
        //S82 p82 = new S82();    p82.solve(); * 2
        //S83 p83 = new S83();    p83.solve(); * 1
        //S84 p84 = new S84();    p84.solve(); * 1
        //S85 p85 = new S85();    p85.solve(); * 2
        //S86 p86 = new S86();    p86.solve(); * 1
        //S87 p87 = new S87();    p87.solve(); * ??
        //S88 p88 = new S88();    p88.solve(); * 1
        //S89 p89 = new S89();    p89.solve(); * 1
        //S90 p90 = new S90();    p90.solve(); * 1
        //S91 p91 = new S91();    p91.solve(); * 1
        //S92 p92 = new S92();    p92.solve(); * 1
        //S93 p93 = new S93();    p93.solve(); * 1
        //S94 p94 = new S94();    p94.solve(); * 1
        //S95 p95 = new S95();    p95.solve(); * 1
        //S96 p96 = new S96();    p96.solve();
        S97 p97 = new S97();    p97.solve();
    }
}



 class S97 {
    
    public static void solve(){
        Scanner input = new Scanner(System.in);
        int a = input.nextInt();
        int b = input.nextInt();
        int r = input.nextInt();
        if (2*r > Math.min(a,b))
            System.out.println("Second");
        else
            System.out.println("First");
    }
}
