package codeup100;

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.IOException;

import java.io.InputStreamReader;

import java.io.OutputStreamWriter;

import java.util.Scanner;

public class c1084singleFor {

public static void main(String[] args) {

//시간초과 문제 발생

/* Scanner sc = new Scanner(System.in);

String[] color = sc.nextLine().split(" ");

sc.close();

int rPick = Integer.parseInt(color[0]);

int gPick = Integer.parseInt(color[1]);

int bPick = Integer.parseInt(color[2]);

int count = 0;

for(int r=0; r<rPick; r++){

for(int g=0; g<gPick; g++){

for(int b=0; b<bPick; b++){

System.out.printf("%d %d %d\n", r,g,b);

count ++;

}

}

}

System.out.println(count);*/

//시간 초과 해결

/* BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

try {

String[] n = br.readLine().split(" ");

int count = 0;

BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));

for (int i = 0; i < Integer.valueOf(n[0]); i++) {

for (int j = 0; j < Integer.valueOf(n[1]); j++) {

for (int k = 0; k < Integer.valueOf(n[2]); k++) {

bw.write(i + " " + j + " " + k + "\n");

count++;

}

}

}

bw.write(String.valueOf(count));

bw.flush();

} catch (NumberFormatException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}

*/

//단일for문

Scanner sc = new Scanner(System.in);

String color[] = sc.nextLine().split(" ");

int r = Integer.parseInt(color[0], 10);

int g = Integer.parseInt(color[1], 10);

int b = Integer.parseInt(color[2], 10);

int loop = r * g * b;

int rLoop = g * b;

int gLoop = b;

try(BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out))){

for(int i=0; i<loop; i++){

int colorR = i / rLoop;

int colorG = (i%rLoop) / gLoop;

int colorB = i % b;

bw.write(colorR +" " + colorG + " " + colorB+"\n");

}

bw.write(loop+"");

bw.flush();

}catch(IOException ie){

ie.printStackTrace();

}

}//end of main()

}