#include <stdio.h>
#include <stdlib.h>
#include <math.h>

struct PIXEL{
	int x;
	int y;
	int pixelvalue;
};

#define SQR(x) ((x)*(x))

typedef struct PIXEL pixel;

int main(void){
	int x,y,i,j;
	FILE* f;
	pixel myPixels[100][100];
	x=12;
	y=13;
	for(i=0;i<100;i++){
		for(j=0;j<100;j++){
			myPixels[i][j].x=i;
			myPixels[i][j].y=j;

			if(SQR(i-3)+SQR(j-3)<=SQR(3
				)){
				myPixels[i][j].pixelvalue =1;
			}else{
				myPixels[i][j].pixelvalue =0;
			}

		}
	}

	f=fopen("ABC.txt","w");
	for(i=0;i<20;i++){
		for(j=0;j<20;j++){
			fprintf(f,"%d",myPixels[i][j].pixelvalue);
		}
	fprintf(f,"\n");
	}
	fclose(f);
	return 0;
}